Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2, D

Percentage Accurate: 58.7% → 97.3%
Time: 15.9s
Alternatives: 15
Speedup: 4.0×

Specification

?
\[\begin{array}{l} \\ x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (+
  x
  (/
   (*
    y
    (+ (* (+ (* (+ (* (+ (* z 3.13060547623) 11.1667541262) z) t) z) a) z) b))
   (+
    (* (+ (* (+ (* (+ z 15.234687407) z) 31.4690115749) z) 11.9400905721) z)
    0.607771387771))))
double code(double x, double y, double z, double t, double a, double b) {
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = x + ((y * ((((((((z * 3.13060547623d0) + 11.1667541262d0) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407d0) * z) + 31.4690115749d0) * z) + 11.9400905721d0) * z) + 0.607771387771d0))
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
}
def code(x, y, z, t, a, b):
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771))
function code(x, y, z, t, a, b)
	return Float64(x + Float64(Float64(y * Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / Float64(Float64(Float64(Float64(Float64(Float64(Float64(z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771)))
end
function tmp = code(x, y, z, t, a, b)
	tmp = x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
end
code[x_, y_, z_, t_, a_, b_] := N[(x + N[(N[(y * N[(N[(N[(N[(N[(N[(N[(N[(z * 3.13060547623), $MachinePrecision] + 11.1667541262), $MachinePrecision] * z), $MachinePrecision] + t), $MachinePrecision] * z), $MachinePrecision] + a), $MachinePrecision] * z), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(N[(N[(N[(N[(z + 15.234687407), $MachinePrecision] * z), $MachinePrecision] + 31.4690115749), $MachinePrecision] * z), $MachinePrecision] + 11.9400905721), $MachinePrecision] * z), $MachinePrecision] + 0.607771387771), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}
\end{array}

Sampling outcomes in binary64 precision:

Local Percentage Accuracy vs ?

The average percentage accuracy by input value. Horizontal axis shows value of an input variable; the variable is choosen in the title. Vertical axis is accuracy; higher is better. Red represent the original program, while blue represents Herbie's suggestion. These can be toggled with buttons below the plot. The line is an average while dots represent individual samples.

Accuracy vs Speed?

Herbie found 15 alternatives:

AlternativeAccuracySpeedup
The accuracy (vertical axis) and speed (horizontal axis) of each alternatives. Up and to the right is better. The red square shows the initial program, and each blue circle shows an alternative.The line shows the best available speed-accuracy tradeoffs.

Initial Program: 58.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (+
  x
  (/
   (*
    y
    (+ (* (+ (* (+ (* (+ (* z 3.13060547623) 11.1667541262) z) t) z) a) z) b))
   (+
    (* (+ (* (+ (* (+ z 15.234687407) z) 31.4690115749) z) 11.9400905721) z)
    0.607771387771))))
double code(double x, double y, double z, double t, double a, double b) {
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = x + ((y * ((((((((z * 3.13060547623d0) + 11.1667541262d0) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407d0) * z) + 31.4690115749d0) * z) + 11.9400905721d0) * z) + 0.607771387771d0))
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
}
def code(x, y, z, t, a, b):
	return x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771))
function code(x, y, z, t, a, b)
	return Float64(x + Float64(Float64(y * Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / Float64(Float64(Float64(Float64(Float64(Float64(Float64(z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771)))
end
function tmp = code(x, y, z, t, a, b)
	tmp = x + ((y * ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)) / (((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771));
end
code[x_, y_, z_, t_, a_, b_] := N[(x + N[(N[(y * N[(N[(N[(N[(N[(N[(N[(N[(z * 3.13060547623), $MachinePrecision] + 11.1667541262), $MachinePrecision] * z), $MachinePrecision] + t), $MachinePrecision] * z), $MachinePrecision] + a), $MachinePrecision] * z), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(N[(N[(N[(N[(N[(N[(z + 15.234687407), $MachinePrecision] * z), $MachinePrecision] + 31.4690115749), $MachinePrecision] * z), $MachinePrecision] + 11.9400905721), $MachinePrecision] * z), $MachinePrecision] + 0.607771387771), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}
\end{array}

Alternative 1: 97.3% accurate, 0.1× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2.4 \cdot 10^{+44}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 1.6 \cdot 10^{+42}:\\ \;\;\;\;x + \frac{y}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -2.4e+44)
   (+
    x
    (/
     y
     (+
      0.31942702700572795
      (- (/ 3.7269864963038164 z) (/ (* t 0.10203362558171805) (* z z))))))
   (if (<= z 1.6e+42)
     (+
      x
      (*
       (/
        y
        (+
         (*
          z
          (+ (* z (+ (* z (+ z 15.234687407)) 31.4690115749)) 11.9400905721))
         0.607771387771))
       (fma z (fma z (fma z (fma z 3.13060547623 11.1667541262) t) a) b)))
     (+
      x
      (*
       y
       (+
        3.13060547623
        (-
         (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
         (/ 36.52704169880642 z))))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -2.4e+44) {
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	} else if (z <= 1.6e+42) {
		tmp = x + ((y / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) * fma(z, fma(z, fma(z, fma(z, 3.13060547623, 11.1667541262), t), a), b));
	} else {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	}
	return tmp;
}
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -2.4e+44)
		tmp = Float64(x + Float64(y / Float64(0.31942702700572795 + Float64(Float64(3.7269864963038164 / z) - Float64(Float64(t * 0.10203362558171805) / Float64(z * z))))));
	elseif (z <= 1.6e+42)
		tmp = Float64(x + Float64(Float64(y / Float64(Float64(z * Float64(Float64(z * Float64(Float64(z * Float64(z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) * fma(z, fma(z, fma(z, fma(z, 3.13060547623, 11.1667541262), t), a), b)));
	else
		tmp = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))));
	end
	return tmp
end
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -2.4e+44], N[(x + N[(y / N[(0.31942702700572795 + N[(N[(3.7269864963038164 / z), $MachinePrecision] - N[(N[(t * 0.10203362558171805), $MachinePrecision] / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.6e+42], N[(x + N[(N[(y / N[(N[(z * N[(N[(z * N[(N[(z * N[(z + 15.234687407), $MachinePrecision]), $MachinePrecision] + 31.4690115749), $MachinePrecision]), $MachinePrecision] + 11.9400905721), $MachinePrecision]), $MachinePrecision] + 0.607771387771), $MachinePrecision]), $MachinePrecision] * N[(z * N[(z * N[(z * N[(z * 3.13060547623 + 11.1667541262), $MachinePrecision] + t), $MachinePrecision] + a), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.4 \cdot 10^{+44}:\\
\;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\

\mathbf{elif}\;z \leq 1.6 \cdot 10^{+42}:\\
\;\;\;\;x + \frac{y}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)\\

\mathbf{else}:\\
\;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.40000000000000013e44

    1. Initial program 8.3%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*9.8%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified9.8%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(-1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}} + 3.7269864963038164 \cdot \frac{1}{z}\right)}} \]
    5. Step-by-step derivation
      1. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} + -1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      2. mul-1-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(3.7269864963038164 \cdot \frac{1}{z} + \color{blue}{\left(-\frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}\right)} \]
      3. unsub-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      4. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\color{blue}{\frac{3.7269864963038164 \cdot 1}{z}} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      5. metadata-eval99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{\color{blue}{3.7269864963038164}}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      6. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{0.10203362558171805 \cdot t + 3.241970391368047}}{{z}^{2}}\right)} \]
      7. *-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{t \cdot 0.10203362558171805} + 3.241970391368047}{{z}^{2}}\right)} \]
      8. fma-def99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}}{{z}^{2}}\right)} \]
      9. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{\color{blue}{z \cdot z}}\right)} \]
    6. Simplified99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{z \cdot z}\right)}} \]
    7. Taylor expanded in t around inf 99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{0.10203362558171805 \cdot \frac{t}{{z}^{2}}}\right)} \]
    8. Step-by-step derivation
      1. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{{z}^{2}}}\right)} \]
      2. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{0.10203362558171805 \cdot t}{\color{blue}{z \cdot z}}\right)} \]
    9. Simplified99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{z \cdot z}}\right)} \]

    if -2.40000000000000013e44 < z < 1.60000000000000001e42

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in y around 0 99.7%

      \[\leadsto x + \color{blue}{\frac{y}{0.607771387771 + z \cdot \left(11.9400905721 + z \cdot \left(31.4690115749 + z \cdot \left(15.234687407 + z\right)\right)\right)}} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right) \]

    if 1.60000000000000001e42 < z

    1. Initial program 7.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/12.4%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative12.4%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def12.4%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified12.4%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 75.7%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg75.7%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative75.7%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def75.7%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative75.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow275.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified98.2%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+98.2%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification99.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.4 \cdot 10^{+44}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 1.6 \cdot 10^{+42}:\\ \;\;\;\;x + \frac{y}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \]

Alternative 2: 96.9% accurate, 0.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \leq \infty:\\ \;\;\;\;x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (<=
      (/
       (*
        y
        (+
         (* z (+ a (* z (+ t (* z (+ 11.1667541262 (* z 3.13060547623)))))))
         b))
       (+
        (*
         z
         (+ (* z (+ (* z (+ z 15.234687407)) 31.4690115749)) 11.9400905721))
        0.607771387771))
      INFINITY)
   (+
    x
    (/
     y
     (/
      (fma
       (fma (fma (+ z 15.234687407) z 31.4690115749) z 11.9400905721)
       z
       0.607771387771)
      (fma (fma (fma (fma z 3.13060547623 11.1667541262) z t) z a) z b))))
   (+
    x
    (/
     y
     (+
      0.31942702700572795
      (- (/ 3.7269864963038164 z) (/ (* t 0.10203362558171805) (* z z))))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) <= ((double) INFINITY)) {
		tmp = x + (y / (fma(fma(fma((z + 15.234687407), z, 31.4690115749), z, 11.9400905721), z, 0.607771387771) / fma(fma(fma(fma(z, 3.13060547623, 11.1667541262), z, t), z, a), z, b)));
	} else {
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	}
	return tmp;
}
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (Float64(Float64(y * Float64(Float64(z * Float64(a + Float64(z * Float64(t + Float64(z * Float64(11.1667541262 + Float64(z * 3.13060547623))))))) + b)) / Float64(Float64(z * Float64(Float64(z * Float64(Float64(z * Float64(z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) <= Inf)
		tmp = Float64(x + Float64(y / Float64(fma(fma(fma(Float64(z + 15.234687407), z, 31.4690115749), z, 11.9400905721), z, 0.607771387771) / fma(fma(fma(fma(z, 3.13060547623, 11.1667541262), z, t), z, a), z, b))));
	else
		tmp = Float64(x + Float64(y / Float64(0.31942702700572795 + Float64(Float64(3.7269864963038164 / z) - Float64(Float64(t * 0.10203362558171805) / Float64(z * z))))));
	end
	return tmp
end
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[N[(N[(y * N[(N[(z * N[(a + N[(z * N[(t + N[(z * N[(11.1667541262 + N[(z * 3.13060547623), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(N[(z * N[(N[(z * N[(N[(z * N[(z + 15.234687407), $MachinePrecision]), $MachinePrecision] + 31.4690115749), $MachinePrecision]), $MachinePrecision] + 11.9400905721), $MachinePrecision]), $MachinePrecision] + 0.607771387771), $MachinePrecision]), $MachinePrecision], Infinity], N[(x + N[(y / N[(N[(N[(N[(N[(z + 15.234687407), $MachinePrecision] * z + 31.4690115749), $MachinePrecision] * z + 11.9400905721), $MachinePrecision] * z + 0.607771387771), $MachinePrecision] / N[(N[(N[(N[(z * 3.13060547623 + 11.1667541262), $MachinePrecision] * z + t), $MachinePrecision] * z + a), $MachinePrecision] * z + b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y / N[(0.31942702700572795 + N[(N[(3.7269864963038164 / z), $MachinePrecision] - N[(N[(t * 0.10203362558171805), $MachinePrecision] / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \leq \infty:\\
\;\;\;\;x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}\\

\mathbf{else}:\\
\;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 y (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 z 313060547623/100000000000) 55833770631/5000000000) z) t) z) a) z) b)) (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 z 15234687407/1000000000) z) 314690115749/10000000000) z) 119400905721/10000000000) z) 607771387771/1000000000000)) < +inf.0

    1. Initial program 94.2%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*97.2%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def97.2%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified97.2%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]

    if +inf.0 < (/.f64 (*.f64 y (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 z 313060547623/100000000000) 55833770631/5000000000) z) t) z) a) z) b)) (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 (*.f64 (+.f64 z 15234687407/1000000000) z) 314690115749/10000000000) z) 119400905721/10000000000) z) 607771387771/1000000000000))

    1. Initial program 0.0%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*0.0%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def0.0%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified0.0%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(-1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}} + 3.7269864963038164 \cdot \frac{1}{z}\right)}} \]
    5. Step-by-step derivation
      1. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} + -1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      2. mul-1-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(3.7269864963038164 \cdot \frac{1}{z} + \color{blue}{\left(-\frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}\right)} \]
      3. unsub-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      4. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\color{blue}{\frac{3.7269864963038164 \cdot 1}{z}} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      5. metadata-eval99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{\color{blue}{3.7269864963038164}}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      6. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{0.10203362558171805 \cdot t + 3.241970391368047}}{{z}^{2}}\right)} \]
      7. *-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{t \cdot 0.10203362558171805} + 3.241970391368047}{{z}^{2}}\right)} \]
      8. fma-def99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}}{{z}^{2}}\right)} \]
      9. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{\color{blue}{z \cdot z}}\right)} \]
    6. Simplified99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{z \cdot z}\right)}} \]
    7. Taylor expanded in t around inf 99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{0.10203362558171805 \cdot \frac{t}{{z}^{2}}}\right)} \]
    8. Step-by-step derivation
      1. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{{z}^{2}}}\right)} \]
      2. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{0.10203362558171805 \cdot t}{\color{blue}{z \cdot z}}\right)} \]
    9. Simplified99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{z \cdot z}}\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification98.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} \leq \infty:\\ \;\;\;\;x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \end{array} \]

Alternative 3: 97.0% accurate, 0.2× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{+44}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 7 \cdot 10^{+37}:\\ \;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)}\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -2.5e+44)
   (+
    x
    (/
     y
     (+
      0.31942702700572795
      (- (/ 3.7269864963038164 z) (/ (* t 0.10203362558171805) (* z z))))))
   (if (<= z 7e+37)
     (+
      x
      (/
       (*
        y
        (+
         (* z (+ a (* z (+ t (* z (+ 11.1667541262 (* z 3.13060547623)))))))
         b))
       (+
        0.607771387771
        (* z (fma z (fma z (+ z 15.234687407) 31.4690115749) 11.9400905721)))))
     (+
      x
      (*
       y
       (+
        3.13060547623
        (-
         (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
         (/ 36.52704169880642 z))))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -2.5e+44) {
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	} else if (z <= 7e+37) {
		tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / (0.607771387771 + (z * fma(z, fma(z, (z + 15.234687407), 31.4690115749), 11.9400905721))));
	} else {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	}
	return tmp;
}
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -2.5e+44)
		tmp = Float64(x + Float64(y / Float64(0.31942702700572795 + Float64(Float64(3.7269864963038164 / z) - Float64(Float64(t * 0.10203362558171805) / Float64(z * z))))));
	elseif (z <= 7e+37)
		tmp = Float64(x + Float64(Float64(y * Float64(Float64(z * Float64(a + Float64(z * Float64(t + Float64(z * Float64(11.1667541262 + Float64(z * 3.13060547623))))))) + b)) / Float64(0.607771387771 + Float64(z * fma(z, fma(z, Float64(z + 15.234687407), 31.4690115749), 11.9400905721)))));
	else
		tmp = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))));
	end
	return tmp
end
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -2.5e+44], N[(x + N[(y / N[(0.31942702700572795 + N[(N[(3.7269864963038164 / z), $MachinePrecision] - N[(N[(t * 0.10203362558171805), $MachinePrecision] / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 7e+37], N[(x + N[(N[(y * N[(N[(z * N[(a + N[(z * N[(t + N[(z * N[(11.1667541262 + N[(z * 3.13060547623), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(0.607771387771 + N[(z * N[(z * N[(z * N[(z + 15.234687407), $MachinePrecision] + 31.4690115749), $MachinePrecision] + 11.9400905721), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.5 \cdot 10^{+44}:\\
\;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\

\mathbf{elif}\;z \leq 7 \cdot 10^{+37}:\\
\;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)}\\

\mathbf{else}:\\
\;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.4999999999999998e44

    1. Initial program 8.3%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*9.8%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified9.8%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(-1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}} + 3.7269864963038164 \cdot \frac{1}{z}\right)}} \]
    5. Step-by-step derivation
      1. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} + -1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      2. mul-1-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(3.7269864963038164 \cdot \frac{1}{z} + \color{blue}{\left(-\frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}\right)} \]
      3. unsub-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      4. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\color{blue}{\frac{3.7269864963038164 \cdot 1}{z}} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      5. metadata-eval99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{\color{blue}{3.7269864963038164}}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      6. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{0.10203362558171805 \cdot t + 3.241970391368047}}{{z}^{2}}\right)} \]
      7. *-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{t \cdot 0.10203362558171805} + 3.241970391368047}{{z}^{2}}\right)} \]
      8. fma-def99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}}{{z}^{2}}\right)} \]
      9. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{\color{blue}{z \cdot z}}\right)} \]
    6. Simplified99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{z \cdot z}\right)}} \]
    7. Taylor expanded in t around inf 99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{0.10203362558171805 \cdot \frac{t}{{z}^{2}}}\right)} \]
    8. Step-by-step derivation
      1. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{{z}^{2}}}\right)} \]
      2. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{0.10203362558171805 \cdot t}{\color{blue}{z \cdot z}}\right)} \]
    9. Simplified99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{z \cdot z}}\right)} \]

    if -2.4999999999999998e44 < z < 7e37

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. expm1-log1p-u99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{\mathsf{expm1}\left(\mathsf{log1p}\left(\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z\right)\right)} + 0.607771387771} \]
      2. expm1-udef99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{\left(e^{\mathsf{log1p}\left(\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z\right)} - 1\right)} + 0.607771387771} \]
      3. *-commutative99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(e^{\mathsf{log1p}\left(\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)}\right)} - 1\right) + 0.607771387771} \]
      4. *-commutative99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(e^{\mathsf{log1p}\left(z \cdot \left(\color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721\right)\right)} - 1\right) + 0.607771387771} \]
      5. *-commutative99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(e^{\mathsf{log1p}\left(z \cdot \left(z \cdot \left(\color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749\right) + 11.9400905721\right)\right)} - 1\right) + 0.607771387771} \]
      6. fma-udef99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(e^{\mathsf{log1p}\left(z \cdot \left(z \cdot \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)} + 11.9400905721\right)\right)} - 1\right) + 0.607771387771} \]
      7. fma-udef99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(e^{\mathsf{log1p}\left(z \cdot \color{blue}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)}\right)} - 1\right) + 0.607771387771} \]
    3. Applied egg-rr99.4%

      \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{\left(e^{\mathsf{log1p}\left(z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)\right)} - 1\right)} + 0.607771387771} \]
    4. Step-by-step derivation
      1. expm1-def99.4%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{\mathsf{expm1}\left(\mathsf{log1p}\left(z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)\right)\right)} + 0.607771387771} \]
      2. expm1-log1p99.7%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)} + 0.607771387771} \]
    5. Simplified99.7%

      \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)} + 0.607771387771} \]

    if 7e37 < z

    1. Initial program 7.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/12.4%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative12.4%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def12.4%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified12.4%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 75.7%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg75.7%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative75.7%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def75.7%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative75.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow275.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified98.2%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+98.2%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification99.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.5 \cdot 10^{+44}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 7 \cdot 10^{+37}:\\ \;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right)}\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \]

Alternative 4: 97.0% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -3.6 \cdot 10^{+45}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 1.2 \cdot 10^{+39}:\\ \;\;\;\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} + x\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (<= z -3.6e+45)
   (+
    x
    (/
     y
     (+
      0.31942702700572795
      (- (/ 3.7269864963038164 z) (/ (* t 0.10203362558171805) (* z z))))))
   (if (<= z 1.2e+39)
     (+
      (/
       (*
        y
        (+
         (* z (+ a (* z (+ t (* z (+ 11.1667541262 (* z 3.13060547623)))))))
         b))
       (+
        (*
         z
         (+ (* z (+ (* z (+ z 15.234687407)) 31.4690115749)) 11.9400905721))
        0.607771387771))
      x)
     (+
      x
      (*
       y
       (+
        3.13060547623
        (-
         (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
         (/ 36.52704169880642 z))))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -3.6e+45) {
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	} else if (z <= 1.2e+39) {
		tmp = ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) + x;
	} else {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if (z <= (-3.6d+45)) then
        tmp = x + (y / (0.31942702700572795d0 + ((3.7269864963038164d0 / z) - ((t * 0.10203362558171805d0) / (z * z)))))
    else if (z <= 1.2d+39) then
        tmp = ((y * ((z * (a + (z * (t + (z * (11.1667541262d0 + (z * 3.13060547623d0))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407d0)) + 31.4690115749d0)) + 11.9400905721d0)) + 0.607771387771d0)) + x
    else
        tmp = x + (y * (3.13060547623d0 + (((t / (z * z)) + (457.9610022158428d0 / (z * z))) - (36.52704169880642d0 / z))))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if (z <= -3.6e+45) {
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	} else if (z <= 1.2e+39) {
		tmp = ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) + x;
	} else {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if z <= -3.6e+45:
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))))
	elif z <= 1.2e+39:
		tmp = ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) + x
	else:
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))))
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if (z <= -3.6e+45)
		tmp = Float64(x + Float64(y / Float64(0.31942702700572795 + Float64(Float64(3.7269864963038164 / z) - Float64(Float64(t * 0.10203362558171805) / Float64(z * z))))));
	elseif (z <= 1.2e+39)
		tmp = Float64(Float64(Float64(y * Float64(Float64(z * Float64(a + Float64(z * Float64(t + Float64(z * Float64(11.1667541262 + Float64(z * 3.13060547623))))))) + b)) / Float64(Float64(z * Float64(Float64(z * Float64(Float64(z * Float64(z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) + x);
	else
		tmp = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if (z <= -3.6e+45)
		tmp = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	elseif (z <= 1.2e+39)
		tmp = ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / ((z * ((z * ((z * (z + 15.234687407)) + 31.4690115749)) + 11.9400905721)) + 0.607771387771)) + x;
	else
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[LessEqual[z, -3.6e+45], N[(x + N[(y / N[(0.31942702700572795 + N[(N[(3.7269864963038164 / z), $MachinePrecision] - N[(N[(t * 0.10203362558171805), $MachinePrecision] / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.2e+39], N[(N[(N[(y * N[(N[(z * N[(a + N[(z * N[(t + N[(z * N[(11.1667541262 + N[(z * 3.13060547623), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(N[(z * N[(N[(z * N[(N[(z * N[(z + 15.234687407), $MachinePrecision]), $MachinePrecision] + 31.4690115749), $MachinePrecision]), $MachinePrecision] + 11.9400905721), $MachinePrecision]), $MachinePrecision] + 0.607771387771), $MachinePrecision]), $MachinePrecision] + x), $MachinePrecision], N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.6 \cdot 10^{+45}:\\
\;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\

\mathbf{elif}\;z \leq 1.2 \cdot 10^{+39}:\\
\;\;\;\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} + x\\

\mathbf{else}:\\
\;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.6e45

    1. Initial program 8.3%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*9.8%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def9.8%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified9.8%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(-1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}} + 3.7269864963038164 \cdot \frac{1}{z}\right)}} \]
    5. Step-by-step derivation
      1. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} + -1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      2. mul-1-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(3.7269864963038164 \cdot \frac{1}{z} + \color{blue}{\left(-\frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}\right)} \]
      3. unsub-neg99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      4. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\color{blue}{\frac{3.7269864963038164 \cdot 1}{z}} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      5. metadata-eval99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{\color{blue}{3.7269864963038164}}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      6. +-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{0.10203362558171805 \cdot t + 3.241970391368047}}{{z}^{2}}\right)} \]
      7. *-commutative99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{t \cdot 0.10203362558171805} + 3.241970391368047}{{z}^{2}}\right)} \]
      8. fma-def99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}}{{z}^{2}}\right)} \]
      9. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{\color{blue}{z \cdot z}}\right)} \]
    6. Simplified99.9%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{z \cdot z}\right)}} \]
    7. Taylor expanded in t around inf 99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{0.10203362558171805 \cdot \frac{t}{{z}^{2}}}\right)} \]
    8. Step-by-step derivation
      1. associate-*r/99.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{{z}^{2}}}\right)} \]
      2. unpow299.9%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{0.10203362558171805 \cdot t}{\color{blue}{z \cdot z}}\right)} \]
    9. Simplified99.9%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{z \cdot z}}\right)} \]

    if -3.6e45 < z < 1.2e39

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]

    if 1.2e39 < z

    1. Initial program 7.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/12.4%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative12.4%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def12.4%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def12.4%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified12.4%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 75.7%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg75.7%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg75.7%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative75.7%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def75.7%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative75.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow275.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def98.2%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified98.2%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+98.2%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow298.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval98.2%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified98.2%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification99.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.6 \cdot 10^{+45}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 1.2 \cdot 10^{+39}:\\ \;\;\;\;\frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{z \cdot \left(z \cdot \left(z \cdot \left(z + 15.234687407\right) + 31.4690115749\right) + 11.9400905721\right) + 0.607771387771} + x\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \]

Alternative 5: 87.0% accurate, 1.2× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{if}\;z \leq -5.5 \cdot 10^{+25}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 2.2 \cdot 10^{-57}:\\ \;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\ \mathbf{elif}\;z \leq 4.8 \cdot 10^{+20}:\\ \;\;\;\;x + \frac{y}{\frac{0.607771387771 + z \cdot 11.9400905721}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right)}}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1
         (+
          x
          (*
           y
           (+
            3.13060547623
            (-
             (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
             (/ 36.52704169880642 z)))))))
   (if (<= z -5.5e+25)
     t_1
     (if (<= z 2.2e-57)
       (+
        x
        (+
         (* 1.6453555072203998 (* y b))
         (*
          z
          (- (* 1.6453555072203998 (* y a)) (* (* y b) 32.324150453290734)))))
       (if (<= z 4.8e+20)
         (+
          x
          (/
           y
           (/
            (+ 0.607771387771 (* z 11.9400905721))
            (*
             z
             (+ a (* z (+ t (* z (+ 11.1667541262 (* z 3.13060547623))))))))))
         t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	double tmp;
	if (z <= -5.5e+25) {
		tmp = t_1;
	} else if (z <= 2.2e-57) {
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	} else if (z <= 4.8e+20) {
		tmp = x + (y / ((0.607771387771 + (z * 11.9400905721)) / (z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623)))))))));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y * (3.13060547623d0 + (((t / (z * z)) + (457.9610022158428d0 / (z * z))) - (36.52704169880642d0 / z))))
    if (z <= (-5.5d+25)) then
        tmp = t_1
    else if (z <= 2.2d-57) then
        tmp = x + ((1.6453555072203998d0 * (y * b)) + (z * ((1.6453555072203998d0 * (y * a)) - ((y * b) * 32.324150453290734d0))))
    else if (z <= 4.8d+20) then
        tmp = x + (y / ((0.607771387771d0 + (z * 11.9400905721d0)) / (z * (a + (z * (t + (z * (11.1667541262d0 + (z * 3.13060547623d0)))))))))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	double tmp;
	if (z <= -5.5e+25) {
		tmp = t_1;
	} else if (z <= 2.2e-57) {
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	} else if (z <= 4.8e+20) {
		tmp = x + (y / ((0.607771387771 + (z * 11.9400905721)) / (z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623)))))))));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))))
	tmp = 0
	if z <= -5.5e+25:
		tmp = t_1
	elif z <= 2.2e-57:
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))))
	elif z <= 4.8e+20:
		tmp = x + (y / ((0.607771387771 + (z * 11.9400905721)) / (z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623)))))))))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))))
	tmp = 0.0
	if (z <= -5.5e+25)
		tmp = t_1;
	elseif (z <= 2.2e-57)
		tmp = Float64(x + Float64(Float64(1.6453555072203998 * Float64(y * b)) + Float64(z * Float64(Float64(1.6453555072203998 * Float64(y * a)) - Float64(Float64(y * b) * 32.324150453290734)))));
	elseif (z <= 4.8e+20)
		tmp = Float64(x + Float64(y / Float64(Float64(0.607771387771 + Float64(z * 11.9400905721)) / Float64(z * Float64(a + Float64(z * Float64(t + Float64(z * Float64(11.1667541262 + Float64(z * 3.13060547623))))))))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	tmp = 0.0;
	if (z <= -5.5e+25)
		tmp = t_1;
	elseif (z <= 2.2e-57)
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	elseif (z <= 4.8e+20)
		tmp = x + (y / ((0.607771387771 + (z * 11.9400905721)) / (z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623)))))))));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -5.5e+25], t$95$1, If[LessEqual[z, 2.2e-57], N[(x + N[(N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(1.6453555072203998 * N[(y * a), $MachinePrecision]), $MachinePrecision] - N[(N[(y * b), $MachinePrecision] * 32.324150453290734), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 4.8e+20], N[(x + N[(y / N[(N[(0.607771387771 + N[(z * 11.9400905721), $MachinePrecision]), $MachinePrecision] / N[(z * N[(a + N[(z * N[(t + N[(z * N[(11.1667541262 + N[(z * 3.13060547623), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\
\mathbf{if}\;z \leq -5.5 \cdot 10^{+25}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 2.2 \cdot 10^{-57}:\\
\;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\

\mathbf{elif}\;z \leq 4.8 \cdot 10^{+20}:\\
\;\;\;\;x + \frac{y}{\frac{0.607771387771 + z \cdot 11.9400905721}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right)}}\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -5.50000000000000018e25 or 4.8e20 < z

    1. Initial program 10.9%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/13.1%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative13.1%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def13.1%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified13.1%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 82.5%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative82.5%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg82.5%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg82.5%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative82.5%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def82.5%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative82.5%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow282.5%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified98.6%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 98.6%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+98.6%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow298.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow298.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified98.6%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]

    if -5.50000000000000018e25 < z < 2.19999999999999999e-57

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 88.5%

      \[\leadsto x + \color{blue}{\left(1.6453555072203998 \cdot \left(b \cdot y\right) + z \cdot \left(1.6453555072203998 \cdot \left(a \cdot y\right) - 32.324150453290734 \cdot \left(b \cdot y\right)\right)\right)} \]

    if 2.19999999999999999e-57 < z < 4.8e20

    1. Initial program 99.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in b around 0 83.5%

      \[\leadsto x + \frac{y}{\color{blue}{\frac{0.607771387771 + z \cdot \left(11.9400905721 + z \cdot \left(31.4690115749 + z \cdot \left(15.234687407 + z\right)\right)\right)}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + 3.13060547623 \cdot z\right)\right)\right)}}} \]
    5. Taylor expanded in z around 0 75.8%

      \[\leadsto x + \frac{y}{\frac{0.607771387771 + \color{blue}{11.9400905721 \cdot z}}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + 3.13060547623 \cdot z\right)\right)\right)}} \]
    6. Step-by-step derivation
      1. *-commutative75.8%

        \[\leadsto x + \frac{y}{\frac{0.607771387771 + \color{blue}{z \cdot 11.9400905721}}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + 3.13060547623 \cdot z\right)\right)\right)}} \]
    7. Simplified75.8%

      \[\leadsto x + \frac{y}{\frac{0.607771387771 + \color{blue}{z \cdot 11.9400905721}}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + 3.13060547623 \cdot z\right)\right)\right)}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification92.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -5.5 \cdot 10^{+25}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{elif}\;z \leq 2.2 \cdot 10^{-57}:\\ \;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\ \mathbf{elif}\;z \leq 4.8 \cdot 10^{+20}:\\ \;\;\;\;x + \frac{y}{\frac{0.607771387771 + z \cdot 11.9400905721}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right)}}\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \]

Alternative 6: 96.1% accurate, 1.2× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -12.6 \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot 11.9400905721}\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= z -12.6) (not (<= z 4.8e+20)))
   (+
    x
    (*
     y
     (+
      3.13060547623
      (-
       (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
       (/ 36.52704169880642 z)))))
   (+
    x
    (/
     (*
      y
      (+
       (* z (+ a (* z (+ t (* z (+ 11.1667541262 (* z 3.13060547623)))))))
       b))
     (+ 0.607771387771 (* z 11.9400905721))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -12.6) || !(z <= 4.8e+20)) {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	} else {
		tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / (0.607771387771 + (z * 11.9400905721)));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((z <= (-12.6d0)) .or. (.not. (z <= 4.8d+20))) then
        tmp = x + (y * (3.13060547623d0 + (((t / (z * z)) + (457.9610022158428d0 / (z * z))) - (36.52704169880642d0 / z))))
    else
        tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262d0 + (z * 3.13060547623d0))))))) + b)) / (0.607771387771d0 + (z * 11.9400905721d0)))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -12.6) || !(z <= 4.8e+20)) {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	} else {
		tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / (0.607771387771 + (z * 11.9400905721)));
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if (z <= -12.6) or not (z <= 4.8e+20):
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))))
	else:
		tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / (0.607771387771 + (z * 11.9400905721)))
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((z <= -12.6) || !(z <= 4.8e+20))
		tmp = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))));
	else
		tmp = Float64(x + Float64(Float64(y * Float64(Float64(z * Float64(a + Float64(z * Float64(t + Float64(z * Float64(11.1667541262 + Float64(z * 3.13060547623))))))) + b)) / Float64(0.607771387771 + Float64(z * 11.9400905721))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((z <= -12.6) || ~((z <= 4.8e+20)))
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	else
		tmp = x + ((y * ((z * (a + (z * (t + (z * (11.1667541262 + (z * 3.13060547623))))))) + b)) / (0.607771387771 + (z * 11.9400905721)));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[z, -12.6], N[Not[LessEqual[z, 4.8e+20]], $MachinePrecision]], N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(y * N[(N[(z * N[(a + N[(z * N[(t + N[(z * N[(11.1667541262 + N[(z * 3.13060547623), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision] / N[(0.607771387771 + N[(z * 11.9400905721), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -12.6 \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\
\;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\

\mathbf{else}:\\
\;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot 11.9400905721}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -12.5999999999999996 or 4.8e20 < z

    1. Initial program 15.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/17.8%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative17.8%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def17.8%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def17.8%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified17.8%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 80.4%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative80.4%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg80.4%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg80.4%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative80.4%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def80.4%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative80.4%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow280.4%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac95.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--95.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval95.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative95.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def95.7%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified95.7%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 95.7%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+95.7%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative95.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow295.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/95.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval95.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow295.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/95.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval95.7%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified95.7%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]

    if -12.5999999999999996 < z < 4.8e20

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Taylor expanded in z around 0 97.6%

      \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{11.9400905721 \cdot z} + 0.607771387771} \]
    3. Step-by-step derivation
      1. *-commutative97.6%

        \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{z \cdot 11.9400905721} + 0.607771387771} \]
    4. Simplified97.6%

      \[\leadsto x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\color{blue}{z \cdot 11.9400905721} + 0.607771387771} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification96.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -12.6 \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y \cdot \left(z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + z \cdot 3.13060547623\right)\right)\right) + b\right)}{0.607771387771 + z \cdot 11.9400905721}\\ \end{array} \]

Alternative 7: 85.5% accurate, 1.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{if}\;z \leq -3450000000000:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 9 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 3.85 \cdot 10^{-19}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1
         (+
          x
          (*
           y
           (+
            3.13060547623
            (-
             (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
             (/ 36.52704169880642 z)))))))
   (if (<= z -3450000000000.0)
     t_1
     (if (<= z 9e-57)
       (+ x (* 1.6453555072203998 (* y b)))
       (if (<= z 3.85e-19)
         (+ x (* 1.6453555072203998 (* (* z z) (* y t))))
         t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	double tmp;
	if (z <= -3450000000000.0) {
		tmp = t_1;
	} else if (z <= 9e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 3.85e-19) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y * (3.13060547623d0 + (((t / (z * z)) + (457.9610022158428d0 / (z * z))) - (36.52704169880642d0 / z))))
    if (z <= (-3450000000000.0d0)) then
        tmp = t_1
    else if (z <= 9d-57) then
        tmp = x + (1.6453555072203998d0 * (y * b))
    else if (z <= 3.85d-19) then
        tmp = x + (1.6453555072203998d0 * ((z * z) * (y * t)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	double tmp;
	if (z <= -3450000000000.0) {
		tmp = t_1;
	} else if (z <= 9e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 3.85e-19) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))))
	tmp = 0
	if z <= -3450000000000.0:
		tmp = t_1
	elif z <= 9e-57:
		tmp = x + (1.6453555072203998 * (y * b))
	elif z <= 3.85e-19:
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))))
	tmp = 0.0
	if (z <= -3450000000000.0)
		tmp = t_1;
	elseif (z <= 9e-57)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	elseif (z <= 3.85e-19)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(Float64(z * z) * Float64(y * t))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	tmp = 0.0;
	if (z <= -3450000000000.0)
		tmp = t_1;
	elseif (z <= 9e-57)
		tmp = x + (1.6453555072203998 * (y * b));
	elseif (z <= 3.85e-19)
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -3450000000000.0], t$95$1, If[LessEqual[z, 9e-57], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 3.85e-19], N[(x + N[(1.6453555072203998 * N[(N[(z * z), $MachinePrecision] * N[(y * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\
\mathbf{if}\;z \leq -3450000000000:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 9 \cdot 10^{-57}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\

\mathbf{elif}\;z \leq 3.85 \cdot 10^{-19}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.45e12 or 3.85000000000000022e-19 < z

    1. Initial program 16.9%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/19.0%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative19.0%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def19.0%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def19.0%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified19.0%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 80.0%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative80.0%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg80.0%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg80.0%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative80.0%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def80.0%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative80.0%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow280.0%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac95.1%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--95.1%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval95.1%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative95.1%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def95.1%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified95.1%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 95.1%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+95.1%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative95.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow295.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/95.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval95.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow295.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/95.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval95.1%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified95.1%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]

    if -3.45e12 < z < 8.99999999999999945e-57

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative81.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]

    if 8.99999999999999945e-57 < z < 3.85000000000000022e-19

    1. Initial program 99.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Taylor expanded in t around inf 54.8%

      \[\leadsto x + \frac{\color{blue}{t \cdot \left(y \cdot {z}^{2}\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    3. Step-by-step derivation
      1. *-commutative54.8%

        \[\leadsto x + \frac{\color{blue}{\left(y \cdot {z}^{2}\right) \cdot t}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      2. associate-*l*60.4%

        \[\leadsto x + \frac{\color{blue}{y \cdot \left({z}^{2} \cdot t\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      3. unpow260.4%

        \[\leadsto x + \frac{y \cdot \left(\color{blue}{\left(z \cdot z\right)} \cdot t\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      4. associate-*l*60.1%

        \[\leadsto x + \frac{y \cdot \color{blue}{\left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    4. Simplified60.1%

      \[\leadsto x + \frac{\color{blue}{y \cdot \left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    5. Taylor expanded in z around 0 54.9%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(t \cdot \left(y \cdot {z}^{2}\right)\right)} \]
    6. Step-by-step derivation
      1. associate-*r*60.4%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(\left(t \cdot y\right) \cdot {z}^{2}\right)} \]
      2. *-commutative60.4%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\color{blue}{\left(y \cdot t\right)} \cdot {z}^{2}\right) \]
      3. unpow260.4%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \color{blue}{\left(z \cdot z\right)}\right) \]
    7. Simplified60.4%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \left(z \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification87.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3450000000000:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{elif}\;z \leq 9 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 3.85 \cdot 10^{-19}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \end{array} \]

Alternative 8: 86.3% accurate, 1.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -5.5 \cdot 10^{+25} \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= z -5.5e+25) (not (<= z 4.8e+20)))
   (+
    x
    (*
     y
     (+
      3.13060547623
      (-
       (+ (/ t (* z z)) (/ 457.9610022158428 (* z z)))
       (/ 36.52704169880642 z)))))
   (+
    x
    (+
     (* 1.6453555072203998 (* y b))
     (*
      z
      (- (* 1.6453555072203998 (* y a)) (* (* y b) 32.324150453290734)))))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -5.5e+25) || !(z <= 4.8e+20)) {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	} else {
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((z <= (-5.5d+25)) .or. (.not. (z <= 4.8d+20))) then
        tmp = x + (y * (3.13060547623d0 + (((t / (z * z)) + (457.9610022158428d0 / (z * z))) - (36.52704169880642d0 / z))))
    else
        tmp = x + ((1.6453555072203998d0 * (y * b)) + (z * ((1.6453555072203998d0 * (y * a)) - ((y * b) * 32.324150453290734d0))))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -5.5e+25) || !(z <= 4.8e+20)) {
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	} else {
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if (z <= -5.5e+25) or not (z <= 4.8e+20):
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))))
	else:
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))))
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((z <= -5.5e+25) || !(z <= 4.8e+20))
		tmp = Float64(x + Float64(y * Float64(3.13060547623 + Float64(Float64(Float64(t / Float64(z * z)) + Float64(457.9610022158428 / Float64(z * z))) - Float64(36.52704169880642 / z)))));
	else
		tmp = Float64(x + Float64(Float64(1.6453555072203998 * Float64(y * b)) + Float64(z * Float64(Float64(1.6453555072203998 * Float64(y * a)) - Float64(Float64(y * b) * 32.324150453290734)))));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((z <= -5.5e+25) || ~((z <= 4.8e+20)))
		tmp = x + (y * (3.13060547623 + (((t / (z * z)) + (457.9610022158428 / (z * z))) - (36.52704169880642 / z))));
	else
		tmp = x + ((1.6453555072203998 * (y * b)) + (z * ((1.6453555072203998 * (y * a)) - ((y * b) * 32.324150453290734))));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[z, -5.5e+25], N[Not[LessEqual[z, 4.8e+20]], $MachinePrecision]], N[(x + N[(y * N[(3.13060547623 + N[(N[(N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision] + N[(457.9610022158428 / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(36.52704169880642 / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(x + N[(N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision] + N[(z * N[(N[(1.6453555072203998 * N[(y * a), $MachinePrecision]), $MachinePrecision] - N[(N[(y * b), $MachinePrecision] * 32.324150453290734), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -5.5 \cdot 10^{+25} \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\
\;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\

\mathbf{else}:\\
\;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -5.50000000000000018e25 or 4.8e20 < z

    1. Initial program 10.9%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/13.1%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative13.1%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def13.1%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def13.1%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified13.1%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around -inf 82.5%

      \[\leadsto x + \color{blue}{\left(\left(-1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z} + \left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right)\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right)} \]
    5. Step-by-step derivation
      1. +-commutative82.5%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + -1 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      2. mul-1-neg82.5%

        \[\leadsto x + \left(\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) + \color{blue}{\left(-\frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      3. unsub-neg82.5%

        \[\leadsto x + \left(\color{blue}{\left(\left(3.13060547623 \cdot y + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right)} - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      4. *-commutative82.5%

        \[\leadsto x + \left(\left(\left(\color{blue}{y \cdot 3.13060547623} + \frac{t \cdot y}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      5. fma-def82.5%

        \[\leadsto x + \left(\left(\color{blue}{\mathsf{fma}\left(y, 3.13060547623, \frac{t \cdot y}{{z}^{2}}\right)} - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      6. *-commutative82.5%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{\color{blue}{y \cdot t}}{{z}^{2}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      7. unpow282.5%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y \cdot t}{\color{blue}{z \cdot z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      8. times-frac98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \color{blue}{\frac{y}{z} \cdot \frac{t}{z}}\right) - \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      9. distribute-rgt-out--98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{\color{blue}{y \cdot \left(-11.1667541262 - -47.69379582500642\right)}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      10. metadata-eval98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot \color{blue}{36.52704169880642}}{z}\right) - \left(-15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}} + 98.5170599679272 \cdot \frac{y}{{z}^{2}}\right)\right) \]
      11. +-commutative98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\left(98.5170599679272 \cdot \frac{y}{{z}^{2}} + -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
      12. fma-def98.6%

        \[\leadsto x + \left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \color{blue}{\mathsf{fma}\left(98.5170599679272, \frac{y}{{z}^{2}}, -15.234687407 \cdot \frac{-11.1667541262 \cdot y - -47.69379582500642 \cdot y}{{z}^{2}}\right)}\right) \]
    6. Simplified98.6%

      \[\leadsto x + \color{blue}{\left(\left(\mathsf{fma}\left(y, 3.13060547623, \frac{y}{z} \cdot \frac{t}{z}\right) - \frac{y \cdot 36.52704169880642}{z}\right) - \mathsf{fma}\left(98.5170599679272, \frac{y}{z \cdot z}, \frac{y \cdot -556.47806218377}{z \cdot z}\right)\right)} \]
    7. Taylor expanded in y around 0 98.6%

      \[\leadsto x + \color{blue}{y \cdot \left(\left(3.13060547623 + \left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right)\right) - 36.52704169880642 \cdot \frac{1}{z}\right)} \]
    8. Step-by-step derivation
      1. associate--l+98.6%

        \[\leadsto x + y \cdot \color{blue}{\left(3.13060547623 + \left(\left(457.9610022158428 \cdot \frac{1}{{z}^{2}} + \frac{t}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right)} \]
      2. +-commutative98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\color{blue}{\left(\frac{t}{{z}^{2}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right)} - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      3. unpow298.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{\color{blue}{z \cdot z}} + 457.9610022158428 \cdot \frac{1}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      4. associate-*r/98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \color{blue}{\frac{457.9610022158428 \cdot 1}{{z}^{2}}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      5. metadata-eval98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{\color{blue}{457.9610022158428}}{{z}^{2}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      6. unpow298.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{\color{blue}{z \cdot z}}\right) - 36.52704169880642 \cdot \frac{1}{z}\right)\right) \]
      7. associate-*r/98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \color{blue}{\frac{36.52704169880642 \cdot 1}{z}}\right)\right) \]
      8. metadata-eval98.6%

        \[\leadsto x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{\color{blue}{36.52704169880642}}{z}\right)\right) \]
    9. Simplified98.6%

      \[\leadsto x + \color{blue}{y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)} \]

    if -5.50000000000000018e25 < z < 4.8e20

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 82.6%

      \[\leadsto x + \color{blue}{\left(1.6453555072203998 \cdot \left(b \cdot y\right) + z \cdot \left(1.6453555072203998 \cdot \left(a \cdot y\right) - 32.324150453290734 \cdot \left(b \cdot y\right)\right)\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification90.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -5.5 \cdot 10^{+25} \lor \neg \left(z \leq 4.8 \cdot 10^{+20}\right):\\ \;\;\;\;x + y \cdot \left(3.13060547623 + \left(\left(\frac{t}{z \cdot z} + \frac{457.9610022158428}{z \cdot z}\right) - \frac{36.52704169880642}{z}\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \left(1.6453555072203998 \cdot \left(y \cdot b\right) + z \cdot \left(1.6453555072203998 \cdot \left(y \cdot a\right) - \left(y \cdot b\right) \cdot 32.324150453290734\right)\right)\\ \end{array} \]

Alternative 9: 82.7% accurate, 1.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{if}\;z \leq -61:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 3.4 \cdot 10^{-56}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 5.8 \cdot 10^{+22}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1
         (+
          x
          (/
           y
           (+
            0.31942702700572795
            (-
             (/ 3.7269864963038164 z)
             (/ (* t 0.10203362558171805) (* z z))))))))
   (if (<= z -61.0)
     t_1
     (if (<= z 3.4e-56)
       (+ x (* 1.6453555072203998 (* y b)))
       (if (<= z 5.8e+22)
         (+ x (* 1.6453555072203998 (* (* z z) (* y t))))
         t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	double tmp;
	if (z <= -61.0) {
		tmp = t_1;
	} else if (z <= 3.4e-56) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 5.8e+22) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y / (0.31942702700572795d0 + ((3.7269864963038164d0 / z) - ((t * 0.10203362558171805d0) / (z * z)))))
    if (z <= (-61.0d0)) then
        tmp = t_1
    else if (z <= 3.4d-56) then
        tmp = x + (1.6453555072203998d0 * (y * b))
    else if (z <= 5.8d+22) then
        tmp = x + (1.6453555072203998d0 * ((z * z) * (y * t)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	double tmp;
	if (z <= -61.0) {
		tmp = t_1;
	} else if (z <= 3.4e-56) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 5.8e+22) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))))
	tmp = 0
	if z <= -61.0:
		tmp = t_1
	elif z <= 3.4e-56:
		tmp = x + (1.6453555072203998 * (y * b))
	elif z <= 5.8e+22:
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y / Float64(0.31942702700572795 + Float64(Float64(3.7269864963038164 / z) - Float64(Float64(t * 0.10203362558171805) / Float64(z * z))))))
	tmp = 0.0
	if (z <= -61.0)
		tmp = t_1;
	elseif (z <= 3.4e-56)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	elseif (z <= 5.8e+22)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(Float64(z * z) * Float64(y * t))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y / (0.31942702700572795 + ((3.7269864963038164 / z) - ((t * 0.10203362558171805) / (z * z)))));
	tmp = 0.0;
	if (z <= -61.0)
		tmp = t_1;
	elseif (z <= 3.4e-56)
		tmp = x + (1.6453555072203998 * (y * b));
	elseif (z <= 5.8e+22)
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y / N[(0.31942702700572795 + N[(N[(3.7269864963038164 / z), $MachinePrecision] - N[(N[(t * 0.10203362558171805), $MachinePrecision] / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -61.0], t$95$1, If[LessEqual[z, 3.4e-56], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 5.8e+22], N[(x + N[(1.6453555072203998 * N[(N[(z * z), $MachinePrecision] * N[(y * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\
\mathbf{if}\;z \leq -61:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 3.4 \cdot 10^{-56}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\

\mathbf{elif}\;z \leq 5.8 \cdot 10^{+22}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -61 or 5.8e22 < z

    1. Initial program 15.0%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*18.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified18.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 94.2%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(-1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}} + 3.7269864963038164 \cdot \frac{1}{z}\right)}} \]
    5. Step-by-step derivation
      1. +-commutative94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} + -1 \cdot \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      2. mul-1-neg94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(3.7269864963038164 \cdot \frac{1}{z} + \color{blue}{\left(-\frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}\right)} \]
      3. unsub-neg94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \color{blue}{\left(3.7269864963038164 \cdot \frac{1}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)}} \]
      4. associate-*r/94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\color{blue}{\frac{3.7269864963038164 \cdot 1}{z}} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      5. metadata-eval94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{\color{blue}{3.7269864963038164}}{z} - \frac{3.241970391368047 + 0.10203362558171805 \cdot t}{{z}^{2}}\right)} \]
      6. +-commutative94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{0.10203362558171805 \cdot t + 3.241970391368047}}{{z}^{2}}\right)} \]
      7. *-commutative94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{t \cdot 0.10203362558171805} + 3.241970391368047}{{z}^{2}}\right)} \]
      8. fma-def94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\color{blue}{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}}{{z}^{2}}\right)} \]
      9. unpow294.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{\color{blue}{z \cdot z}}\right)} \]
    6. Simplified94.2%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{\mathsf{fma}\left(t, 0.10203362558171805, 3.241970391368047\right)}{z \cdot z}\right)}} \]
    7. Taylor expanded in t around inf 94.2%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{0.10203362558171805 \cdot \frac{t}{{z}^{2}}}\right)} \]
    8. Step-by-step derivation
      1. associate-*r/94.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{{z}^{2}}}\right)} \]
      2. unpow294.2%

        \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{0.10203362558171805 \cdot t}{\color{blue}{z \cdot z}}\right)} \]
    9. Simplified94.2%

      \[\leadsto x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \color{blue}{\frac{0.10203362558171805 \cdot t}{z \cdot z}}\right)} \]

    if -61 < z < 3.39999999999999982e-56

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 83.3%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative83.3%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified83.3%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]

    if 3.39999999999999982e-56 < z < 5.8e22

    1. Initial program 99.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Taylor expanded in t around inf 48.0%

      \[\leadsto x + \frac{\color{blue}{t \cdot \left(y \cdot {z}^{2}\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    3. Step-by-step derivation
      1. *-commutative48.0%

        \[\leadsto x + \frac{\color{blue}{\left(y \cdot {z}^{2}\right) \cdot t}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      2. associate-*l*51.9%

        \[\leadsto x + \frac{\color{blue}{y \cdot \left({z}^{2} \cdot t\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      3. unpow251.9%

        \[\leadsto x + \frac{y \cdot \left(\color{blue}{\left(z \cdot z\right)} \cdot t\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      4. associate-*l*51.8%

        \[\leadsto x + \frac{y \cdot \color{blue}{\left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    4. Simplified51.8%

      \[\leadsto x + \frac{\color{blue}{y \cdot \left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    5. Taylor expanded in z around 0 44.3%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(t \cdot \left(y \cdot {z}^{2}\right)\right)} \]
    6. Step-by-step derivation
      1. associate-*r*48.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(\left(t \cdot y\right) \cdot {z}^{2}\right)} \]
      2. *-commutative48.2%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\color{blue}{\left(y \cdot t\right)} \cdot {z}^{2}\right) \]
      3. unpow248.2%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \color{blue}{\left(z \cdot z\right)}\right) \]
    7. Simplified48.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \left(z \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification85.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -61:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \mathbf{elif}\;z \leq 3.4 \cdot 10^{-56}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 5.8 \cdot 10^{+22}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795 + \left(\frac{3.7269864963038164}{z} - \frac{t \cdot 0.10203362558171805}{z \cdot z}\right)}\\ \end{array} \]

Alternative 10: 82.6% accurate, 2.2× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \frac{y}{0.31942702700572795}\\ \mathbf{if}\;z \leq -2.75 \cdot 10^{+14}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 1.7 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 4.2 \cdot 10^{+27}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (+ x (/ y 0.31942702700572795))))
   (if (<= z -2.75e+14)
     t_1
     (if (<= z 1.7e-57)
       (+ x (* 1.6453555072203998 (* y b)))
       (if (<= z 4.2e+27)
         (+ x (* 1.6453555072203998 (* (* z z) (* y t))))
         t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -2.75e+14) {
		tmp = t_1;
	} else if (z <= 1.7e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 4.2e+27) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y / 0.31942702700572795d0)
    if (z <= (-2.75d+14)) then
        tmp = t_1
    else if (z <= 1.7d-57) then
        tmp = x + (1.6453555072203998d0 * (y * b))
    else if (z <= 4.2d+27) then
        tmp = x + (1.6453555072203998d0 * ((z * z) * (y * t)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -2.75e+14) {
		tmp = t_1;
	} else if (z <= 1.7e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 4.2e+27) {
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y / 0.31942702700572795)
	tmp = 0
	if z <= -2.75e+14:
		tmp = t_1
	elif z <= 1.7e-57:
		tmp = x + (1.6453555072203998 * (y * b))
	elif z <= 4.2e+27:
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y / 0.31942702700572795))
	tmp = 0.0
	if (z <= -2.75e+14)
		tmp = t_1;
	elseif (z <= 1.7e-57)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	elseif (z <= 4.2e+27)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(Float64(z * z) * Float64(y * t))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y / 0.31942702700572795);
	tmp = 0.0;
	if (z <= -2.75e+14)
		tmp = t_1;
	elseif (z <= 1.7e-57)
		tmp = x + (1.6453555072203998 * (y * b));
	elseif (z <= 4.2e+27)
		tmp = x + (1.6453555072203998 * ((z * z) * (y * t)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y / 0.31942702700572795), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -2.75e+14], t$95$1, If[LessEqual[z, 1.7e-57], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 4.2e+27], N[(x + N[(1.6453555072203998 * N[(N[(z * z), $MachinePrecision] * N[(y * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + \frac{y}{0.31942702700572795}\\
\mathbf{if}\;z \leq -2.75 \cdot 10^{+14}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 1.7 \cdot 10^{-57}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\

\mathbf{elif}\;z \leq 4.2 \cdot 10^{+27}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -2.75e14 or 4.19999999999999989e27 < z

    1. Initial program 12.3%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*16.1%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def16.1%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified16.1%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 96.2%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]

    if -2.75e14 < z < 1.70000000000000008e-57

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative81.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]

    if 1.70000000000000008e-57 < z < 4.19999999999999989e27

    1. Initial program 99.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Taylor expanded in t around inf 48.0%

      \[\leadsto x + \frac{\color{blue}{t \cdot \left(y \cdot {z}^{2}\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    3. Step-by-step derivation
      1. *-commutative48.0%

        \[\leadsto x + \frac{\color{blue}{\left(y \cdot {z}^{2}\right) \cdot t}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      2. associate-*l*51.9%

        \[\leadsto x + \frac{\color{blue}{y \cdot \left({z}^{2} \cdot t\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      3. unpow251.9%

        \[\leadsto x + \frac{y \cdot \left(\color{blue}{\left(z \cdot z\right)} \cdot t\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
      4. associate-*l*51.8%

        \[\leadsto x + \frac{y \cdot \color{blue}{\left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    4. Simplified51.8%

      \[\leadsto x + \frac{\color{blue}{y \cdot \left(z \cdot \left(z \cdot t\right)\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    5. Taylor expanded in z around 0 44.3%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(t \cdot \left(y \cdot {z}^{2}\right)\right)} \]
    6. Step-by-step derivation
      1. associate-*r*48.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(\left(t \cdot y\right) \cdot {z}^{2}\right)} \]
      2. *-commutative48.2%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\color{blue}{\left(y \cdot t\right)} \cdot {z}^{2}\right) \]
      3. unpow248.2%

        \[\leadsto x + 1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \color{blue}{\left(z \cdot z\right)}\right) \]
    7. Simplified48.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(\left(y \cdot t\right) \cdot \left(z \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification85.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.75 \cdot 10^{+14}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{elif}\;z \leq 1.7 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 4.2 \cdot 10^{+27}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(\left(z \cdot z\right) \cdot \left(y \cdot t\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \end{array} \]

Alternative 11: 82.8% accurate, 2.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \frac{y}{0.31942702700572795}\\ \mathbf{if}\;z \leq -3.9 \cdot 10^{+15}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 8.5 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 2.35 \cdot 10^{+45}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(a \cdot \left(y \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (+ x (/ y 0.31942702700572795))))
   (if (<= z -3.9e+15)
     t_1
     (if (<= z 8.5e-57)
       (+ x (* 1.6453555072203998 (* y b)))
       (if (<= z 2.35e+45) (+ x (* 1.6453555072203998 (* a (* y z)))) t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -3.9e+15) {
		tmp = t_1;
	} else if (z <= 8.5e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 2.35e+45) {
		tmp = x + (1.6453555072203998 * (a * (y * z)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y / 0.31942702700572795d0)
    if (z <= (-3.9d+15)) then
        tmp = t_1
    else if (z <= 8.5d-57) then
        tmp = x + (1.6453555072203998d0 * (y * b))
    else if (z <= 2.35d+45) then
        tmp = x + (1.6453555072203998d0 * (a * (y * z)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -3.9e+15) {
		tmp = t_1;
	} else if (z <= 8.5e-57) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 2.35e+45) {
		tmp = x + (1.6453555072203998 * (a * (y * z)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y / 0.31942702700572795)
	tmp = 0
	if z <= -3.9e+15:
		tmp = t_1
	elif z <= 8.5e-57:
		tmp = x + (1.6453555072203998 * (y * b))
	elif z <= 2.35e+45:
		tmp = x + (1.6453555072203998 * (a * (y * z)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y / 0.31942702700572795))
	tmp = 0.0
	if (z <= -3.9e+15)
		tmp = t_1;
	elseif (z <= 8.5e-57)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	elseif (z <= 2.35e+45)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(a * Float64(y * z))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y / 0.31942702700572795);
	tmp = 0.0;
	if (z <= -3.9e+15)
		tmp = t_1;
	elseif (z <= 8.5e-57)
		tmp = x + (1.6453555072203998 * (y * b));
	elseif (z <= 2.35e+45)
		tmp = x + (1.6453555072203998 * (a * (y * z)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y / 0.31942702700572795), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -3.9e+15], t$95$1, If[LessEqual[z, 8.5e-57], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 2.35e+45], N[(x + N[(1.6453555072203998 * N[(a * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + \frac{y}{0.31942702700572795}\\
\mathbf{if}\;z \leq -3.9 \cdot 10^{+15}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 8.5 \cdot 10^{-57}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\

\mathbf{elif}\;z \leq 2.35 \cdot 10^{+45}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(a \cdot \left(y \cdot z\right)\right)\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.9e15 or 2.35000000000000001e45 < z

    1. Initial program 9.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*12.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified12.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 97.4%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]

    if -3.9e15 < z < 8.49999999999999955e-57

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative81.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]

    if 8.49999999999999955e-57 < z < 2.35000000000000001e45

    1. Initial program 93.1%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Taylor expanded in a around inf 56.3%

      \[\leadsto x + \frac{\color{blue}{a \cdot \left(y \cdot z\right)}}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    3. Taylor expanded in z around 0 53.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(a \cdot \left(y \cdot z\right)\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification85.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.9 \cdot 10^{+15}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{elif}\;z \leq 8.5 \cdot 10^{-57}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 2.35 \cdot 10^{+45}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(a \cdot \left(y \cdot z\right)\right)\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \end{array} \]

Alternative 12: 82.8% accurate, 2.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \frac{y}{0.31942702700572795}\\ \mathbf{if}\;z \leq -17500000000000:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z \leq 2.4 \cdot 10^{-56}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 2.4 \cdot 10^{+45}:\\ \;\;\;\;x + \frac{y}{\frac{0.607771387771}{z \cdot a}}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1 (+ x (/ y 0.31942702700572795))))
   (if (<= z -17500000000000.0)
     t_1
     (if (<= z 2.4e-56)
       (+ x (* 1.6453555072203998 (* y b)))
       (if (<= z 2.4e+45) (+ x (/ y (/ 0.607771387771 (* z a)))) t_1)))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -17500000000000.0) {
		tmp = t_1;
	} else if (z <= 2.4e-56) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 2.4e+45) {
		tmp = x + (y / (0.607771387771 / (z * a)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (y / 0.31942702700572795d0)
    if (z <= (-17500000000000.0d0)) then
        tmp = t_1
    else if (z <= 2.4d-56) then
        tmp = x + (1.6453555072203998d0 * (y * b))
    else if (z <= 2.4d+45) then
        tmp = x + (y / (0.607771387771d0 / (z * a)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (y / 0.31942702700572795);
	double tmp;
	if (z <= -17500000000000.0) {
		tmp = t_1;
	} else if (z <= 2.4e-56) {
		tmp = x + (1.6453555072203998 * (y * b));
	} else if (z <= 2.4e+45) {
		tmp = x + (y / (0.607771387771 / (z * a)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (y / 0.31942702700572795)
	tmp = 0
	if z <= -17500000000000.0:
		tmp = t_1
	elif z <= 2.4e-56:
		tmp = x + (1.6453555072203998 * (y * b))
	elif z <= 2.4e+45:
		tmp = x + (y / (0.607771387771 / (z * a)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(y / 0.31942702700572795))
	tmp = 0.0
	if (z <= -17500000000000.0)
		tmp = t_1;
	elseif (z <= 2.4e-56)
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	elseif (z <= 2.4e+45)
		tmp = Float64(x + Float64(y / Float64(0.607771387771 / Float64(z * a))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (y / 0.31942702700572795);
	tmp = 0.0;
	if (z <= -17500000000000.0)
		tmp = t_1;
	elseif (z <= 2.4e-56)
		tmp = x + (1.6453555072203998 * (y * b));
	elseif (z <= 2.4e+45)
		tmp = x + (y / (0.607771387771 / (z * a)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(y / 0.31942702700572795), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -17500000000000.0], t$95$1, If[LessEqual[z, 2.4e-56], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 2.4e+45], N[(x + N[(y / N[(0.607771387771 / N[(z * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + \frac{y}{0.31942702700572795}\\
\mathbf{if}\;z \leq -17500000000000:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z \leq 2.4 \cdot 10^{-56}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\

\mathbf{elif}\;z \leq 2.4 \cdot 10^{+45}:\\
\;\;\;\;x + \frac{y}{\frac{0.607771387771}{z \cdot a}}\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -1.75e13 or 2.39999999999999989e45 < z

    1. Initial program 9.5%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*12.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def12.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified12.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 97.4%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]

    if -1.75e13 < z < 2.40000000000000001e-56

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative81.2%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified81.2%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]

    if 2.40000000000000001e-56 < z < 2.39999999999999989e45

    1. Initial program 93.1%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*96.4%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def96.4%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified96.4%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in b around 0 81.4%

      \[\leadsto x + \frac{y}{\color{blue}{\frac{0.607771387771 + z \cdot \left(11.9400905721 + z \cdot \left(31.4690115749 + z \cdot \left(15.234687407 + z\right)\right)\right)}{z \cdot \left(a + z \cdot \left(t + z \cdot \left(11.1667541262 + 3.13060547623 \cdot z\right)\right)\right)}}} \]
    5. Taylor expanded in z around 0 53.3%

      \[\leadsto x + \frac{y}{\color{blue}{\frac{0.607771387771}{a \cdot z}}} \]
    6. Step-by-step derivation
      1. *-commutative53.3%

        \[\leadsto x + \frac{y}{\frac{0.607771387771}{\color{blue}{z \cdot a}}} \]
    7. Simplified53.3%

      \[\leadsto x + \frac{y}{\color{blue}{\frac{0.607771387771}{z \cdot a}}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification85.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -17500000000000:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{elif}\;z \leq 2.4 \cdot 10^{-56}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \mathbf{elif}\;z \leq 2.4 \cdot 10^{+45}:\\ \;\;\;\;x + \frac{y}{\frac{0.607771387771}{z \cdot a}}\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \end{array} \]

Alternative 13: 83.0% accurate, 3.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2 \cdot 10^{+15} \lor \neg \left(z \leq 350\right):\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{else}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= z -2e+15) (not (<= z 350.0)))
   (+ x (/ y 0.31942702700572795))
   (+ x (* 1.6453555072203998 (* y b)))))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -2e+15) || !(z <= 350.0)) {
		tmp = x + (y / 0.31942702700572795);
	} else {
		tmp = x + (1.6453555072203998 * (y * b));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((z <= (-2d+15)) .or. (.not. (z <= 350.0d0))) then
        tmp = x + (y / 0.31942702700572795d0)
    else
        tmp = x + (1.6453555072203998d0 * (y * b))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -2e+15) || !(z <= 350.0)) {
		tmp = x + (y / 0.31942702700572795);
	} else {
		tmp = x + (1.6453555072203998 * (y * b));
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if (z <= -2e+15) or not (z <= 350.0):
		tmp = x + (y / 0.31942702700572795)
	else:
		tmp = x + (1.6453555072203998 * (y * b))
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((z <= -2e+15) || !(z <= 350.0))
		tmp = Float64(x + Float64(y / 0.31942702700572795));
	else
		tmp = Float64(x + Float64(1.6453555072203998 * Float64(y * b)));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((z <= -2e+15) || ~((z <= 350.0)))
		tmp = x + (y / 0.31942702700572795);
	else
		tmp = x + (1.6453555072203998 * (y * b));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[z, -2e+15], N[Not[LessEqual[z, 350.0]], $MachinePrecision]], N[(x + N[(y / 0.31942702700572795), $MachinePrecision]), $MachinePrecision], N[(x + N[(1.6453555072203998 * N[(y * b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -2 \cdot 10^{+15} \lor \neg \left(z \leq 350\right):\\
\;\;\;\;x + \frac{y}{0.31942702700572795}\\

\mathbf{else}:\\
\;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -2e15 or 350 < z

    1. Initial program 15.0%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*18.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def18.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified18.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 94.1%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]

    if -2e15 < z < 350

    1. Initial program 99.7%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-*l/99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)} \]
      2. *-commutative99.7%

        \[\leadsto x + \frac{y}{\color{blue}{z \cdot \left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right)} + 0.607771387771} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\color{blue}{\mathsf{fma}\left(z, \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, 0.607771387771\right)}} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      4. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{z \cdot \left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right)} + 11.9400905721, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, \left(z + 15.234687407\right) \cdot z + 31.4690115749, 11.9400905721\right)}, 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      6. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{z \cdot \left(z + 15.234687407\right)} + 31.4690115749, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \color{blue}{\mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right)}, 11.9400905721\right), 0.607771387771\right)} \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right) \]
      8. *-commutative99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \left(\color{blue}{z \cdot \left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right)} + b\right) \]
      9. fma-def99.7%

        \[\leadsto x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \color{blue}{\mathsf{fma}\left(z, \left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, b\right)} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, z + 15.234687407, 31.4690115749\right), 11.9400905721\right), 0.607771387771\right)} \cdot \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, \mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), t\right), a\right), b\right)} \]
    4. Taylor expanded in z around 0 73.0%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(b \cdot y\right)} \]
    5. Step-by-step derivation
      1. *-commutative73.0%

        \[\leadsto x + 1.6453555072203998 \cdot \color{blue}{\left(y \cdot b\right)} \]
    6. Simplified73.0%

      \[\leadsto x + \color{blue}{1.6453555072203998 \cdot \left(y \cdot b\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification83.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2 \cdot 10^{+15} \lor \neg \left(z \leq 350\right):\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{else}:\\ \;\;\;\;x + 1.6453555072203998 \cdot \left(y \cdot b\right)\\ \end{array} \]

Alternative 14: 63.9% accurate, 4.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -1.65 \cdot 10^{-61} \lor \neg \left(z \leq 3 \cdot 10^{-139}\right):\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (if (or (<= z -1.65e-61) (not (<= z 3e-139)))
   (+ x (/ y 0.31942702700572795))
   x))
double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -1.65e-61) || !(z <= 3e-139)) {
		tmp = x + (y / 0.31942702700572795);
	} else {
		tmp = x;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: tmp
    if ((z <= (-1.65d-61)) .or. (.not. (z <= 3d-139))) then
        tmp = x + (y / 0.31942702700572795d0)
    else
        tmp = x
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double tmp;
	if ((z <= -1.65e-61) || !(z <= 3e-139)) {
		tmp = x + (y / 0.31942702700572795);
	} else {
		tmp = x;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	tmp = 0
	if (z <= -1.65e-61) or not (z <= 3e-139):
		tmp = x + (y / 0.31942702700572795)
	else:
		tmp = x
	return tmp
function code(x, y, z, t, a, b)
	tmp = 0.0
	if ((z <= -1.65e-61) || !(z <= 3e-139))
		tmp = Float64(x + Float64(y / 0.31942702700572795));
	else
		tmp = x;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	tmp = 0.0;
	if ((z <= -1.65e-61) || ~((z <= 3e-139)))
		tmp = x + (y / 0.31942702700572795);
	else
		tmp = x;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := If[Or[LessEqual[z, -1.65e-61], N[Not[LessEqual[z, 3e-139]], $MachinePrecision]], N[(x + N[(y / 0.31942702700572795), $MachinePrecision]), $MachinePrecision], x]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -1.65 \cdot 10^{-61} \lor \neg \left(z \leq 3 \cdot 10^{-139}\right):\\
\;\;\;\;x + \frac{y}{0.31942702700572795}\\

\mathbf{else}:\\
\;\;\;\;x\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -1.64999999999999998e-61 or 2.9999999999999999e-139 < z

    1. Initial program 40.3%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*42.9%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def42.9%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified42.9%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 73.0%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]

    if -1.64999999999999998e-61 < z < 2.9999999999999999e-139

    1. Initial program 99.8%

      \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
    2. Step-by-step derivation
      1. associate-/l*99.7%

        \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
      2. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      3. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      4. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
      5. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
      6. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
      7. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
      8. fma-def99.7%

        \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
    3. Simplified99.7%

      \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
    4. Taylor expanded in z around inf 47.3%

      \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]
    5. Taylor expanded in x around inf 58.4%

      \[\leadsto \color{blue}{x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification68.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -1.65 \cdot 10^{-61} \lor \neg \left(z \leq 3 \cdot 10^{-139}\right):\\ \;\;\;\;x + \frac{y}{0.31942702700572795}\\ \mathbf{else}:\\ \;\;\;\;x\\ \end{array} \]

Alternative 15: 45.0% accurate, 37.0× speedup?

\[\begin{array}{l} \\ x \end{array} \]
(FPCore (x y z t a b) :precision binary64 x)
double code(double x, double y, double z, double t, double a, double b) {
	return x;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    code = x
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	return x;
}
def code(x, y, z, t, a, b):
	return x
function code(x, y, z, t, a, b)
	return x
end
function tmp = code(x, y, z, t, a, b)
	tmp = x;
end
code[x_, y_, z_, t_, a_, b_] := x
\begin{array}{l}

\\
x
\end{array}
Derivation
  1. Initial program 57.0%

    \[x + \frac{y \cdot \left(\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b\right)}{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771} \]
  2. Step-by-step derivation
    1. associate-/l*58.9%

      \[\leadsto x + \color{blue}{\frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}} \]
    2. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\color{blue}{\mathsf{fma}\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721, z, 0.607771387771\right)}}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
    3. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749, z, 11.9400905721\right)}, z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
    4. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right)}, z, 11.9400905721\right), z, 0.607771387771\right)}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}} \]
    5. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\color{blue}{\mathsf{fma}\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a, z, b\right)}}} \]
    6. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t, z, a\right)}, z, b\right)}} \]
    7. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z \cdot 3.13060547623 + 11.1667541262, z, t\right)}, z, a\right), z, b\right)}} \]
    8. fma-def58.9%

      \[\leadsto x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right)}, z, t\right), z, a\right), z, b\right)}} \]
  3. Simplified58.9%

    \[\leadsto \color{blue}{x + \frac{y}{\frac{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z + 15.234687407, z, 31.4690115749\right), z, 11.9400905721\right), z, 0.607771387771\right)}{\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(\mathsf{fma}\left(z, 3.13060547623, 11.1667541262\right), z, t\right), z, a\right), z, b\right)}}} \]
  4. Taylor expanded in z around inf 65.8%

    \[\leadsto x + \frac{y}{\color{blue}{0.31942702700572795}} \]
  5. Taylor expanded in x around inf 45.3%

    \[\leadsto \color{blue}{x} \]
  6. Final simplification45.3%

    \[\leadsto x \]

Developer target: 98.5% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := x + \left(\left(3.13060547623 - \frac{36.527041698806414}{z}\right) + \frac{t}{z \cdot z}\right) \cdot \frac{y}{1}\\ \mathbf{if}\;z < -6.499344996252632 \cdot 10^{+53}:\\ \;\;\;\;t_1\\ \mathbf{elif}\;z < 7.066965436914287 \cdot 10^{+59}:\\ \;\;\;\;x + \frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}\\ \mathbf{else}:\\ \;\;\;\;t_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b)
 :precision binary64
 (let* ((t_1
         (+
          x
          (*
           (+ (- 3.13060547623 (/ 36.527041698806414 z)) (/ t (* z z)))
           (/ y 1.0)))))
   (if (< z -6.499344996252632e+53)
     t_1
     (if (< z 7.066965436914287e+59)
       (+
        x
        (/
         y
         (/
          (+
           (*
            (+ (* (+ (* (+ z 15.234687407) z) 31.4690115749) z) 11.9400905721)
            z)
           0.607771387771)
          (+
           (* (+ (* (+ (* (+ (* z 3.13060547623) 11.1667541262) z) t) z) a) z)
           b))))
       t_1))))
double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (((3.13060547623 - (36.527041698806414 / z)) + (t / (z * z))) * (y / 1.0));
	double tmp;
	if (z < -6.499344996252632e+53) {
		tmp = t_1;
	} else if (z < 7.066965436914287e+59) {
		tmp = x + (y / ((((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771) / ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8), intent (in) :: a
    real(8), intent (in) :: b
    real(8) :: t_1
    real(8) :: tmp
    t_1 = x + (((3.13060547623d0 - (36.527041698806414d0 / z)) + (t / (z * z))) * (y / 1.0d0))
    if (z < (-6.499344996252632d+53)) then
        tmp = t_1
    else if (z < 7.066965436914287d+59) then
        tmp = x + (y / ((((((((z + 15.234687407d0) * z) + 31.4690115749d0) * z) + 11.9400905721d0) * z) + 0.607771387771d0) / ((((((((z * 3.13060547623d0) + 11.1667541262d0) * z) + t) * z) + a) * z) + b)))
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b) {
	double t_1 = x + (((3.13060547623 - (36.527041698806414 / z)) + (t / (z * z))) * (y / 1.0));
	double tmp;
	if (z < -6.499344996252632e+53) {
		tmp = t_1;
	} else if (z < 7.066965436914287e+59) {
		tmp = x + (y / ((((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771) / ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)));
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b):
	t_1 = x + (((3.13060547623 - (36.527041698806414 / z)) + (t / (z * z))) * (y / 1.0))
	tmp = 0
	if z < -6.499344996252632e+53:
		tmp = t_1
	elif z < 7.066965436914287e+59:
		tmp = x + (y / ((((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771) / ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)))
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t, a, b)
	t_1 = Float64(x + Float64(Float64(Float64(3.13060547623 - Float64(36.527041698806414 / z)) + Float64(t / Float64(z * z))) * Float64(y / 1.0)))
	tmp = 0.0
	if (z < -6.499344996252632e+53)
		tmp = t_1;
	elseif (z < 7.066965436914287e+59)
		tmp = Float64(x + Float64(y / Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771) / Float64(Float64(Float64(Float64(Float64(Float64(Float64(Float64(z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b))));
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b)
	t_1 = x + (((3.13060547623 - (36.527041698806414 / z)) + (t / (z * z))) * (y / 1.0));
	tmp = 0.0;
	if (z < -6.499344996252632e+53)
		tmp = t_1;
	elseif (z < 7.066965436914287e+59)
		tmp = x + (y / ((((((((z + 15.234687407) * z) + 31.4690115749) * z) + 11.9400905721) * z) + 0.607771387771) / ((((((((z * 3.13060547623) + 11.1667541262) * z) + t) * z) + a) * z) + b)));
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_] := Block[{t$95$1 = N[(x + N[(N[(N[(3.13060547623 - N[(36.527041698806414 / z), $MachinePrecision]), $MachinePrecision] + N[(t / N[(z * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] * N[(y / 1.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[Less[z, -6.499344996252632e+53], t$95$1, If[Less[z, 7.066965436914287e+59], N[(x + N[(y / N[(N[(N[(N[(N[(N[(N[(N[(z + 15.234687407), $MachinePrecision] * z), $MachinePrecision] + 31.4690115749), $MachinePrecision] * z), $MachinePrecision] + 11.9400905721), $MachinePrecision] * z), $MachinePrecision] + 0.607771387771), $MachinePrecision] / N[(N[(N[(N[(N[(N[(N[(N[(z * 3.13060547623), $MachinePrecision] + 11.1667541262), $MachinePrecision] * z), $MachinePrecision] + t), $MachinePrecision] * z), $MachinePrecision] + a), $MachinePrecision] * z), $MachinePrecision] + b), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$1]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := x + \left(\left(3.13060547623 - \frac{36.527041698806414}{z}\right) + \frac{t}{z \cdot z}\right) \cdot \frac{y}{1}\\
\mathbf{if}\;z < -6.499344996252632 \cdot 10^{+53}:\\
\;\;\;\;t_1\\

\mathbf{elif}\;z < 7.066965436914287 \cdot 10^{+59}:\\
\;\;\;\;x + \frac{y}{\frac{\left(\left(\left(z + 15.234687407\right) \cdot z + 31.4690115749\right) \cdot z + 11.9400905721\right) \cdot z + 0.607771387771}{\left(\left(\left(z \cdot 3.13060547623 + 11.1667541262\right) \cdot z + t\right) \cdot z + a\right) \cdot z + b}}\\

\mathbf{else}:\\
\;\;\;\;t_1\\


\end{array}
\end{array}

Reproduce

?
herbie shell --seed 2023271 
(FPCore (x y z t a b)
  :name "Numeric.SpecFunctions:logGamma from math-functions-0.1.5.2, D"
  :precision binary64

  :herbie-target
  (if (< z -6.499344996252632e+53) (+ x (* (+ (- 3.13060547623 (/ 36.527041698806414 z)) (/ t (* z z))) (/ y 1.0))) (if (< z 7.066965436914287e+59) (+ x (/ y (/ (+ (* (+ (* (+ (* (+ z 15.234687407) z) 31.4690115749) z) 11.9400905721) z) 0.607771387771) (+ (* (+ (* (+ (* (+ (* z 3.13060547623) 11.1667541262) z) t) z) a) z) b)))) (+ x (* (+ (- 3.13060547623 (/ 36.527041698806414 z)) (/ t (* z z))) (/ y 1.0)))))

  (+ x (/ (* y (+ (* (+ (* (+ (* (+ (* z 3.13060547623) 11.1667541262) z) t) z) a) z) b)) (+ (* (+ (* (+ (* (+ z 15.234687407) z) 31.4690115749) z) 11.9400905721) z) 0.607771387771))))