Diagrams.Solve.Polynomial:quartForm from diagrams-solve-0.1, C

Percentage Accurate: 97.7% → 98.6%
Time: 10.1s
Alternatives: 14
Speedup: 0.5×

Specification

?
\[\begin{array}{l} \\ \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = (((x * y) + ((z * t) / 16.0d0)) - ((a * b) / 4.0d0)) + c
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
def code(x, y, z, t, a, b, c):
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c
function code(x, y, z, t, a, b, c)
	return Float64(Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)) + c)
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision] + c), $MachinePrecision]
\begin{array}{l}

\\
\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c
\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 14 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: 97.7% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    code = (((x * y) + ((z * t) / 16.0d0)) - ((a * b) / 4.0d0)) + c
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
}
def code(x, y, z, t, a, b, c):
	return (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c
function code(x, y, z, t, a, b, c)
	return Float64(Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)) + c)
end
function tmp = code(x, y, z, t, a, b, c)
	tmp = (((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) + c;
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision] + c), $MachinePrecision]
\begin{array}{l}

\\
\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c
\end{array}

Alternative 1: 98.6% accurate, 0.1× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4} \leq \infty:\\ \;\;\;\;c + \left(\mathsf{fma}\left(x, y, z \cdot \frac{t}{16}\right) - a \cdot \frac{b}{4}\right)\\ \mathbf{else}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) INFINITY)
   (+ c (- (fma x y (* z (/ t 16.0))) (* a (/ b 4.0))))
   (+ c (* t (* z 0.0625)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)) <= ((double) INFINITY)) {
		tmp = c + (fma(x, y, (z * (t / 16.0))) - (a * (b / 4.0)));
	} else {
		tmp = c + (t * (z * 0.0625));
	}
	return tmp;
}
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0)) <= Inf)
		tmp = Float64(c + Float64(fma(x, y, Float64(z * Float64(t / 16.0))) - Float64(a * Float64(b / 4.0))));
	else
		tmp = Float64(c + Float64(t * Float64(z * 0.0625)));
	end
	return tmp
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision], Infinity], N[(c + N[(N[(x * y + N[(z * N[(t / 16.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(a * N[(b / 4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4} \leq \infty:\\
\;\;\;\;c + \left(\mathsf{fma}\left(x, y, z \cdot \frac{t}{16}\right) - a \cdot \frac{b}{4}\right)\\

\mathbf{else}:\\
\;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 (+.f64 (*.f64 x y) (/.f64 (*.f64 z t) #s(literal 16 binary64))) (/.f64 (*.f64 a b) #s(literal 4 binary64))) < +inf.0

    1. Initial program 99.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Step-by-step derivation
      1. associate-+l-99.7%

        \[\leadsto \color{blue}{\left(x \cdot y + \frac{z \cdot t}{16}\right) - \left(\frac{a \cdot b}{4} - c\right)} \]
      2. *-commutative99.7%

        \[\leadsto \left(x \cdot y + \frac{\color{blue}{t \cdot z}}{16}\right) - \left(\frac{a \cdot b}{4} - c\right) \]
      3. associate-+l-99.7%

        \[\leadsto \color{blue}{\left(\left(x \cdot y + \frac{t \cdot z}{16}\right) - \frac{a \cdot b}{4}\right) + c} \]
      4. fma-define99.7%

        \[\leadsto \left(\color{blue}{\mathsf{fma}\left(x, y, \frac{t \cdot z}{16}\right)} - \frac{a \cdot b}{4}\right) + c \]
      5. *-commutative99.7%

        \[\leadsto \left(\mathsf{fma}\left(x, y, \frac{\color{blue}{z \cdot t}}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
      6. associate-/l*100.0%

        \[\leadsto \left(\mathsf{fma}\left(x, y, \color{blue}{z \cdot \frac{t}{16}}\right) - \frac{a \cdot b}{4}\right) + c \]
      7. associate-/l*100.0%

        \[\leadsto \left(\mathsf{fma}\left(x, y, z \cdot \frac{t}{16}\right) - \color{blue}{a \cdot \frac{b}{4}}\right) + c \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(\mathsf{fma}\left(x, y, z \cdot \frac{t}{16}\right) - a \cdot \frac{b}{4}\right) + c} \]
    4. Add Preprocessing

    if +inf.0 < (-.f64 (+.f64 (*.f64 x y) (/.f64 (*.f64 z t) #s(literal 16 binary64))) (/.f64 (*.f64 a b) #s(literal 4 binary64)))

    1. Initial program 0.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 46.1%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*46.1%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative46.1%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*46.1%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified46.1%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
  3. Recombined 2 regimes into one program.
  4. Final simplification97.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4} \leq \infty:\\ \;\;\;\;c + \left(\mathsf{fma}\left(x, y, z \cdot \frac{t}{16}\right) - a \cdot \frac{b}{4}\right)\\ \mathbf{else}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 2: 98.8% accurate, 0.1× speedup?

\[\begin{array}{l} \\ \mathsf{fma}\left(x, y, \mathsf{fma}\left(z, \frac{t}{16}, \frac{a \cdot b}{-4}\right)\right) + c \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (+ (fma x y (fma z (/ t 16.0) (/ (* a b) -4.0))) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	return fma(x, y, fma(z, (t / 16.0), ((a * b) / -4.0))) + c;
}
function code(x, y, z, t, a, b, c)
	return Float64(fma(x, y, fma(z, Float64(t / 16.0), Float64(Float64(a * b) / -4.0))) + c)
end
code[x_, y_, z_, t_, a_, b_, c_] := N[(N[(x * y + N[(z * N[(t / 16.0), $MachinePrecision] + N[(N[(a * b), $MachinePrecision] / -4.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + c), $MachinePrecision]
\begin{array}{l}

\\
\mathsf{fma}\left(x, y, \mathsf{fma}\left(z, \frac{t}{16}, \frac{a \cdot b}{-4}\right)\right) + c
\end{array}
Derivation
  1. Initial program 95.4%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Step-by-step derivation
    1. associate--l+95.4%

      \[\leadsto \color{blue}{\left(x \cdot y + \left(\frac{z \cdot t}{16} - \frac{a \cdot b}{4}\right)\right)} + c \]
    2. fma-define96.2%

      \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \frac{z \cdot t}{16} - \frac{a \cdot b}{4}\right)} + c \]
    3. associate-/l*96.5%

      \[\leadsto \mathsf{fma}\left(x, y, \color{blue}{z \cdot \frac{t}{16}} - \frac{a \cdot b}{4}\right) + c \]
    4. fma-neg97.3%

      \[\leadsto \mathsf{fma}\left(x, y, \color{blue}{\mathsf{fma}\left(z, \frac{t}{16}, -\frac{a \cdot b}{4}\right)}\right) + c \]
    5. distribute-neg-frac297.3%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(z, \frac{t}{16}, \color{blue}{\frac{a \cdot b}{-4}}\right)\right) + c \]
    6. metadata-eval97.3%

      \[\leadsto \mathsf{fma}\left(x, y, \mathsf{fma}\left(z, \frac{t}{16}, \frac{a \cdot b}{\color{blue}{-4}}\right)\right) + c \]
  3. Simplified97.3%

    \[\leadsto \color{blue}{\mathsf{fma}\left(x, y, \mathsf{fma}\left(z, \frac{t}{16}, \frac{a \cdot b}{-4}\right)\right) + c} \]
  4. Add Preprocessing
  5. Add Preprocessing

Alternative 3: 65.7% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(a \cdot b\right) \cdot 0.25\\ t_2 := x \cdot y - t\_1\\ t_3 := c + t \cdot \left(z \cdot 0.0625\right)\\ t_4 := c + x \cdot y\\ \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+186}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;a \cdot b \leq -1 \cdot 10^{+94}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{+72}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;a \cdot b \leq -200000:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{-277}:\\ \;\;\;\;t\_4\\ \mathbf{elif}\;a \cdot b \leq 5 \cdot 10^{-197}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;a \cdot b \leq 10^{+140}:\\ \;\;\;\;t\_4\\ \mathbf{else}:\\ \;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* (* a b) 0.25))
        (t_2 (- (* x y) t_1))
        (t_3 (+ c (* t (* z 0.0625))))
        (t_4 (+ c (* x y))))
   (if (<= (* a b) -2e+186)
     t_2
     (if (<= (* a b) -1e+94)
       t_3
       (if (<= (* a b) -2e+72)
         t_2
         (if (<= (* a b) -200000.0)
           t_3
           (if (<= (* a b) -2e-277)
             t_4
             (if (<= (* a b) 5e-197)
               t_3
               (if (<= (* a b) 1e+140) t_4 (- (* (* z t) 0.0625) t_1))))))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = (x * y) - t_1;
	double t_3 = c + (t * (z * 0.0625));
	double t_4 = c + (x * y);
	double tmp;
	if ((a * b) <= -2e+186) {
		tmp = t_2;
	} else if ((a * b) <= -1e+94) {
		tmp = t_3;
	} else if ((a * b) <= -2e+72) {
		tmp = t_2;
	} else if ((a * b) <= -200000.0) {
		tmp = t_3;
	} else if ((a * b) <= -2e-277) {
		tmp = t_4;
	} else if ((a * b) <= 5e-197) {
		tmp = t_3;
	} else if ((a * b) <= 1e+140) {
		tmp = t_4;
	} else {
		tmp = ((z * t) * 0.0625) - t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: t_4
    real(8) :: tmp
    t_1 = (a * b) * 0.25d0
    t_2 = (x * y) - t_1
    t_3 = c + (t * (z * 0.0625d0))
    t_4 = c + (x * y)
    if ((a * b) <= (-2d+186)) then
        tmp = t_2
    else if ((a * b) <= (-1d+94)) then
        tmp = t_3
    else if ((a * b) <= (-2d+72)) then
        tmp = t_2
    else if ((a * b) <= (-200000.0d0)) then
        tmp = t_3
    else if ((a * b) <= (-2d-277)) then
        tmp = t_4
    else if ((a * b) <= 5d-197) then
        tmp = t_3
    else if ((a * b) <= 1d+140) then
        tmp = t_4
    else
        tmp = ((z * t) * 0.0625d0) - 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 c) {
	double t_1 = (a * b) * 0.25;
	double t_2 = (x * y) - t_1;
	double t_3 = c + (t * (z * 0.0625));
	double t_4 = c + (x * y);
	double tmp;
	if ((a * b) <= -2e+186) {
		tmp = t_2;
	} else if ((a * b) <= -1e+94) {
		tmp = t_3;
	} else if ((a * b) <= -2e+72) {
		tmp = t_2;
	} else if ((a * b) <= -200000.0) {
		tmp = t_3;
	} else if ((a * b) <= -2e-277) {
		tmp = t_4;
	} else if ((a * b) <= 5e-197) {
		tmp = t_3;
	} else if ((a * b) <= 1e+140) {
		tmp = t_4;
	} else {
		tmp = ((z * t) * 0.0625) - t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (a * b) * 0.25
	t_2 = (x * y) - t_1
	t_3 = c + (t * (z * 0.0625))
	t_4 = c + (x * y)
	tmp = 0
	if (a * b) <= -2e+186:
		tmp = t_2
	elif (a * b) <= -1e+94:
		tmp = t_3
	elif (a * b) <= -2e+72:
		tmp = t_2
	elif (a * b) <= -200000.0:
		tmp = t_3
	elif (a * b) <= -2e-277:
		tmp = t_4
	elif (a * b) <= 5e-197:
		tmp = t_3
	elif (a * b) <= 1e+140:
		tmp = t_4
	else:
		tmp = ((z * t) * 0.0625) - t_1
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(a * b) * 0.25)
	t_2 = Float64(Float64(x * y) - t_1)
	t_3 = Float64(c + Float64(t * Float64(z * 0.0625)))
	t_4 = Float64(c + Float64(x * y))
	tmp = 0.0
	if (Float64(a * b) <= -2e+186)
		tmp = t_2;
	elseif (Float64(a * b) <= -1e+94)
		tmp = t_3;
	elseif (Float64(a * b) <= -2e+72)
		tmp = t_2;
	elseif (Float64(a * b) <= -200000.0)
		tmp = t_3;
	elseif (Float64(a * b) <= -2e-277)
		tmp = t_4;
	elseif (Float64(a * b) <= 5e-197)
		tmp = t_3;
	elseif (Float64(a * b) <= 1e+140)
		tmp = t_4;
	else
		tmp = Float64(Float64(Float64(z * t) * 0.0625) - t_1);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (a * b) * 0.25;
	t_2 = (x * y) - t_1;
	t_3 = c + (t * (z * 0.0625));
	t_4 = c + (x * y);
	tmp = 0.0;
	if ((a * b) <= -2e+186)
		tmp = t_2;
	elseif ((a * b) <= -1e+94)
		tmp = t_3;
	elseif ((a * b) <= -2e+72)
		tmp = t_2;
	elseif ((a * b) <= -200000.0)
		tmp = t_3;
	elseif ((a * b) <= -2e-277)
		tmp = t_4;
	elseif ((a * b) <= 5e-197)
		tmp = t_3;
	elseif ((a * b) <= 1e+140)
		tmp = t_4;
	else
		tmp = ((z * t) * 0.0625) - t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]}, Block[{t$95$2 = N[(N[(x * y), $MachinePrecision] - t$95$1), $MachinePrecision]}, Block[{t$95$3 = N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$4 = N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(a * b), $MachinePrecision], -2e+186], t$95$2, If[LessEqual[N[(a * b), $MachinePrecision], -1e+94], t$95$3, If[LessEqual[N[(a * b), $MachinePrecision], -2e+72], t$95$2, If[LessEqual[N[(a * b), $MachinePrecision], -200000.0], t$95$3, If[LessEqual[N[(a * b), $MachinePrecision], -2e-277], t$95$4, If[LessEqual[N[(a * b), $MachinePrecision], 5e-197], t$95$3, If[LessEqual[N[(a * b), $MachinePrecision], 1e+140], t$95$4, N[(N[(N[(z * t), $MachinePrecision] * 0.0625), $MachinePrecision] - t$95$1), $MachinePrecision]]]]]]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(a \cdot b\right) \cdot 0.25\\
t_2 := x \cdot y - t\_1\\
t_3 := c + t \cdot \left(z \cdot 0.0625\right)\\
t_4 := c + x \cdot y\\
\mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+186}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;a \cdot b \leq -1 \cdot 10^{+94}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{+72}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;a \cdot b \leq -200000:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{-277}:\\
\;\;\;\;t\_4\\

\mathbf{elif}\;a \cdot b \leq 5 \cdot 10^{-197}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;a \cdot b \leq 10^{+140}:\\
\;\;\;\;t\_4\\

\mathbf{else}:\\
\;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 4 regimes
  2. if (*.f64 a b) < -1.99999999999999996e186 or -1e94 < (*.f64 a b) < -1.99999999999999989e72

    1. Initial program 86.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 87.3%

      \[\leadsto \color{blue}{\left(c + x \cdot y\right) - 0.25 \cdot \left(a \cdot b\right)} \]
    4. Taylor expanded in c around 0 83.2%

      \[\leadsto \color{blue}{x \cdot y - 0.25 \cdot \left(a \cdot b\right)} \]

    if -1.99999999999999996e186 < (*.f64 a b) < -1e94 or -1.99999999999999989e72 < (*.f64 a b) < -2e5 or -1.99999999999999994e-277 < (*.f64 a b) < 5.0000000000000002e-197

    1. Initial program 98.6%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 76.3%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*76.3%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative76.3%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*76.3%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified76.3%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]

    if -2e5 < (*.f64 a b) < -1.99999999999999994e-277 or 5.0000000000000002e-197 < (*.f64 a b) < 1.00000000000000006e140

    1. Initial program 97.2%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 70.7%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if 1.00000000000000006e140 < (*.f64 a b)

    1. Initial program 95.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 95.3%

      \[\leadsto \color{blue}{\left(c + 0.0625 \cdot \left(t \cdot z\right)\right) - 0.25 \cdot \left(a \cdot b\right)} \]
    4. Taylor expanded in c around 0 90.9%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right) - 0.25 \cdot \left(a \cdot b\right)} \]
  3. Recombined 4 regimes into one program.
  4. Final simplification77.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;a \cdot b \leq -2 \cdot 10^{+186}:\\ \;\;\;\;x \cdot y - \left(a \cdot b\right) \cdot 0.25\\ \mathbf{elif}\;a \cdot b \leq -1 \cdot 10^{+94}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{+72}:\\ \;\;\;\;x \cdot y - \left(a \cdot b\right) \cdot 0.25\\ \mathbf{elif}\;a \cdot b \leq -200000:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;a \cdot b \leq -2 \cdot 10^{-277}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;a \cdot b \leq 5 \cdot 10^{-197}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;a \cdot b \leq 10^{+140}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{else}:\\ \;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - \left(a \cdot b\right) \cdot 0.25\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 98.4% accurate, 0.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\\ \mathbf{if}\;t\_1 \leq \infty:\\ \;\;\;\;c + t\_1\\ \mathbf{else}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0))))
   (if (<= t_1 INFINITY) (+ c t_1) (+ c (* t (* z 0.0625))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = ((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0);
	double tmp;
	if (t_1 <= ((double) INFINITY)) {
		tmp = c + t_1;
	} else {
		tmp = c + (t * (z * 0.0625));
	}
	return tmp;
}
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = ((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0);
	double tmp;
	if (t_1 <= Double.POSITIVE_INFINITY) {
		tmp = c + t_1;
	} else {
		tmp = c + (t * (z * 0.0625));
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = ((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0)
	tmp = 0
	if t_1 <= math.inf:
		tmp = c + t_1
	else:
		tmp = c + (t * (z * 0.0625))
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(Float64(x * y) + Float64(Float64(z * t) / 16.0)) - Float64(Float64(a * b) / 4.0))
	tmp = 0.0
	if (t_1 <= Inf)
		tmp = Float64(c + t_1);
	else
		tmp = Float64(c + Float64(t * Float64(z * 0.0625)));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = ((x * y) + ((z * t) / 16.0)) - ((a * b) / 4.0);
	tmp = 0.0;
	if (t_1 <= Inf)
		tmp = c + t_1;
	else
		tmp = c + (t * (z * 0.0625));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(N[(x * y), $MachinePrecision] + N[(N[(z * t), $MachinePrecision] / 16.0), $MachinePrecision]), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] / 4.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, Infinity], N[(c + t$95$1), $MachinePrecision], N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\\
\mathbf{if}\;t\_1 \leq \infty:\\
\;\;\;\;c + t\_1\\

\mathbf{else}:\\
\;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 (+.f64 (*.f64 x y) (/.f64 (*.f64 z t) #s(literal 16 binary64))) (/.f64 (*.f64 a b) #s(literal 4 binary64))) < +inf.0

    1. Initial program 99.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing

    if +inf.0 < (-.f64 (+.f64 (*.f64 x y) (/.f64 (*.f64 z t) #s(literal 16 binary64))) (/.f64 (*.f64 a b) #s(literal 4 binary64)))

    1. Initial program 0.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 46.1%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*46.1%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative46.1%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*46.1%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified46.1%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
  3. Recombined 2 regimes into one program.
  4. Final simplification97.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4} \leq \infty:\\ \;\;\;\;c + \left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right)\\ \mathbf{else}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 64.7% accurate, 0.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := c + t \cdot \left(z \cdot 0.0625\right)\\ t_2 := c + x \cdot y\\ \mathbf{if}\;x \cdot y \leq -0.0205:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;x \cdot y \leq 7 \cdot 10^{-161}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x \cdot y \leq 6 \cdot 10^{-112}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{elif}\;x \cdot y \leq 6.3 \cdot 10^{+100}:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (+ c (* t (* z 0.0625)))) (t_2 (+ c (* x y))))
   (if (<= (* x y) -0.0205)
     t_2
     (if (<= (* x y) 7e-161)
       t_1
       (if (<= (* x y) 6e-112)
         (+ c (* a (* b -0.25)))
         (if (<= (* x y) 6.3e+100) t_1 t_2))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (t * (z * 0.0625));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -0.0205) {
		tmp = t_2;
	} else if ((x * y) <= 7e-161) {
		tmp = t_1;
	} else if ((x * y) <= 6e-112) {
		tmp = c + (a * (b * -0.25));
	} else if ((x * y) <= 6.3e+100) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = c + (t * (z * 0.0625d0))
    t_2 = c + (x * y)
    if ((x * y) <= (-0.0205d0)) then
        tmp = t_2
    else if ((x * y) <= 7d-161) then
        tmp = t_1
    else if ((x * y) <= 6d-112) then
        tmp = c + (a * (b * (-0.25d0)))
    else if ((x * y) <= 6.3d+100) then
        tmp = t_1
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (t * (z * 0.0625));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -0.0205) {
		tmp = t_2;
	} else if ((x * y) <= 7e-161) {
		tmp = t_1;
	} else if ((x * y) <= 6e-112) {
		tmp = c + (a * (b * -0.25));
	} else if ((x * y) <= 6.3e+100) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = c + (t * (z * 0.0625))
	t_2 = c + (x * y)
	tmp = 0
	if (x * y) <= -0.0205:
		tmp = t_2
	elif (x * y) <= 7e-161:
		tmp = t_1
	elif (x * y) <= 6e-112:
		tmp = c + (a * (b * -0.25))
	elif (x * y) <= 6.3e+100:
		tmp = t_1
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(c + Float64(t * Float64(z * 0.0625)))
	t_2 = Float64(c + Float64(x * y))
	tmp = 0.0
	if (Float64(x * y) <= -0.0205)
		tmp = t_2;
	elseif (Float64(x * y) <= 7e-161)
		tmp = t_1;
	elseif (Float64(x * y) <= 6e-112)
		tmp = Float64(c + Float64(a * Float64(b * -0.25)));
	elseif (Float64(x * y) <= 6.3e+100)
		tmp = t_1;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = c + (t * (z * 0.0625));
	t_2 = c + (x * y);
	tmp = 0.0;
	if ((x * y) <= -0.0205)
		tmp = t_2;
	elseif ((x * y) <= 7e-161)
		tmp = t_1;
	elseif ((x * y) <= 6e-112)
		tmp = c + (a * (b * -0.25));
	elseif ((x * y) <= 6.3e+100)
		tmp = t_1;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -0.0205], t$95$2, If[LessEqual[N[(x * y), $MachinePrecision], 7e-161], t$95$1, If[LessEqual[N[(x * y), $MachinePrecision], 6e-112], N[(c + N[(a * N[(b * -0.25), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], 6.3e+100], t$95$1, t$95$2]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := c + t \cdot \left(z \cdot 0.0625\right)\\
t_2 := c + x \cdot y\\
\mathbf{if}\;x \cdot y \leq -0.0205:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;x \cdot y \leq 7 \cdot 10^{-161}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;x \cdot y \leq 6 \cdot 10^{-112}:\\
\;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\

\mathbf{elif}\;x \cdot y \leq 6.3 \cdot 10^{+100}:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;t\_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -0.0205000000000000009 or 6.3000000000000004e100 < (*.f64 x y)

    1. Initial program 94.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 71.0%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if -0.0205000000000000009 < (*.f64 x y) < 7.00000000000000039e-161 or 6.0000000000000002e-112 < (*.f64 x y) < 6.3000000000000004e100

    1. Initial program 95.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 65.0%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*65.7%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative65.7%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*65.7%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified65.7%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]

    if 7.00000000000000039e-161 < (*.f64 x y) < 6.0000000000000002e-112

    1. Initial program 100.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around inf 85.3%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} + c \]
    4. Step-by-step derivation
      1. *-commutative85.3%

        \[\leadsto \color{blue}{\left(a \cdot b\right) \cdot -0.25} + c \]
      2. associate-*r*85.3%

        \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]
    5. Simplified85.3%

      \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]
  3. Recombined 3 regimes into one program.
  4. Final simplification68.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -0.0205:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;x \cdot y \leq 7 \cdot 10^{-161}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;x \cdot y \leq 6 \cdot 10^{-112}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{elif}\;x \cdot y \leq 6.3 \cdot 10^{+100}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{else}:\\ \;\;\;\;c + x \cdot y\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 63.8% accurate, 0.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := c + a \cdot \left(b \cdot -0.25\right)\\ t_2 := c + x \cdot y\\ \mathbf{if}\;x \cdot y \leq -5 \cdot 10^{-51}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-99}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x \cdot y \leq 4.1 \cdot 10^{-72}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;x \cdot y \leq 6.8 \cdot 10^{+139}:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (+ c (* a (* b -0.25)))) (t_2 (+ c (* x y))))
   (if (<= (* x y) -5e-51)
     t_2
     (if (<= (* x y) 5e-99)
       t_1
       (if (<= (* x y) 4.1e-72)
         (* t (* z 0.0625))
         (if (<= (* x y) 6.8e+139) t_1 t_2))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (a * (b * -0.25));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -5e-51) {
		tmp = t_2;
	} else if ((x * y) <= 5e-99) {
		tmp = t_1;
	} else if ((x * y) <= 4.1e-72) {
		tmp = t * (z * 0.0625);
	} else if ((x * y) <= 6.8e+139) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = c + (a * (b * (-0.25d0)))
    t_2 = c + (x * y)
    if ((x * y) <= (-5d-51)) then
        tmp = t_2
    else if ((x * y) <= 5d-99) then
        tmp = t_1
    else if ((x * y) <= 4.1d-72) then
        tmp = t * (z * 0.0625d0)
    else if ((x * y) <= 6.8d+139) then
        tmp = t_1
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (a * (b * -0.25));
	double t_2 = c + (x * y);
	double tmp;
	if ((x * y) <= -5e-51) {
		tmp = t_2;
	} else if ((x * y) <= 5e-99) {
		tmp = t_1;
	} else if ((x * y) <= 4.1e-72) {
		tmp = t * (z * 0.0625);
	} else if ((x * y) <= 6.8e+139) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = c + (a * (b * -0.25))
	t_2 = c + (x * y)
	tmp = 0
	if (x * y) <= -5e-51:
		tmp = t_2
	elif (x * y) <= 5e-99:
		tmp = t_1
	elif (x * y) <= 4.1e-72:
		tmp = t * (z * 0.0625)
	elif (x * y) <= 6.8e+139:
		tmp = t_1
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(c + Float64(a * Float64(b * -0.25)))
	t_2 = Float64(c + Float64(x * y))
	tmp = 0.0
	if (Float64(x * y) <= -5e-51)
		tmp = t_2;
	elseif (Float64(x * y) <= 5e-99)
		tmp = t_1;
	elseif (Float64(x * y) <= 4.1e-72)
		tmp = Float64(t * Float64(z * 0.0625));
	elseif (Float64(x * y) <= 6.8e+139)
		tmp = t_1;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = c + (a * (b * -0.25));
	t_2 = c + (x * y);
	tmp = 0.0;
	if ((x * y) <= -5e-51)
		tmp = t_2;
	elseif ((x * y) <= 5e-99)
		tmp = t_1;
	elseif ((x * y) <= 4.1e-72)
		tmp = t * (z * 0.0625);
	elseif ((x * y) <= 6.8e+139)
		tmp = t_1;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(c + N[(a * N[(b * -0.25), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -5e-51], t$95$2, If[LessEqual[N[(x * y), $MachinePrecision], 5e-99], t$95$1, If[LessEqual[N[(x * y), $MachinePrecision], 4.1e-72], N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], 6.8e+139], t$95$1, t$95$2]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := c + a \cdot \left(b \cdot -0.25\right)\\
t_2 := c + x \cdot y\\
\mathbf{if}\;x \cdot y \leq -5 \cdot 10^{-51}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-99}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;x \cdot y \leq 4.1 \cdot 10^{-72}:\\
\;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\

\mathbf{elif}\;x \cdot y \leq 6.8 \cdot 10^{+139}:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;t\_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -5.00000000000000004e-51 or 6.8000000000000005e139 < (*.f64 x y)

    1. Initial program 93.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 69.6%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if -5.00000000000000004e-51 < (*.f64 x y) < 4.99999999999999969e-99 or 4.10000000000000003e-72 < (*.f64 x y) < 6.8000000000000005e139

    1. Initial program 97.2%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in a around inf 61.0%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} + c \]
    4. Step-by-step derivation
      1. *-commutative61.0%

        \[\leadsto \color{blue}{\left(a \cdot b\right) \cdot -0.25} + c \]
      2. associate-*r*61.0%

        \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]
    5. Simplified61.0%

      \[\leadsto \color{blue}{a \cdot \left(b \cdot -0.25\right)} + c \]

    if 4.99999999999999969e-99 < (*.f64 x y) < 4.10000000000000003e-72

    1. Initial program 83.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 52.8%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in t around inf 100.0%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} \]
    5. Step-by-step derivation
      1. associate-*r*100.0%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} \]
      2. *-commutative100.0%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z \]
      3. associate-*r*100.0%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]
    6. Simplified100.0%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification65.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -5 \cdot 10^{-51}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;x \cdot y \leq 5 \cdot 10^{-99}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{elif}\;x \cdot y \leq 4.1 \cdot 10^{-72}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;x \cdot y \leq 6.8 \cdot 10^{+139}:\\ \;\;\;\;c + a \cdot \left(b \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;c + x \cdot y\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 53.9% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := c + x \cdot y\\ t_2 := b \cdot \left(a \cdot -0.25\right)\\ t_3 := t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{if}\;t \leq -9.2 \cdot 10^{+73}:\\ \;\;\;\;t\_3\\ \mathbf{elif}\;t \leq 7.2 \cdot 10^{-230}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t \leq 6.2 \cdot 10^{-172}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t \leq 3.1 \cdot 10^{+81}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t \leq 2 \cdot 10^{+114}:\\ \;\;\;\;t\_2\\ \mathbf{else}:\\ \;\;\;\;t\_3\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (+ c (* x y))) (t_2 (* b (* a -0.25))) (t_3 (* t (* z 0.0625))))
   (if (<= t -9.2e+73)
     t_3
     (if (<= t 7.2e-230)
       t_1
       (if (<= t 6.2e-172)
         t_2
         (if (<= t 3.1e+81) t_1 (if (<= t 2e+114) t_2 t_3)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (x * y);
	double t_2 = b * (a * -0.25);
	double t_3 = t * (z * 0.0625);
	double tmp;
	if (t <= -9.2e+73) {
		tmp = t_3;
	} else if (t <= 7.2e-230) {
		tmp = t_1;
	} else if (t <= 6.2e-172) {
		tmp = t_2;
	} else if (t <= 3.1e+81) {
		tmp = t_1;
	} else if (t <= 2e+114) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: t_3
    real(8) :: tmp
    t_1 = c + (x * y)
    t_2 = b * (a * (-0.25d0))
    t_3 = t * (z * 0.0625d0)
    if (t <= (-9.2d+73)) then
        tmp = t_3
    else if (t <= 7.2d-230) then
        tmp = t_1
    else if (t <= 6.2d-172) then
        tmp = t_2
    else if (t <= 3.1d+81) then
        tmp = t_1
    else if (t <= 2d+114) then
        tmp = t_2
    else
        tmp = t_3
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = c + (x * y);
	double t_2 = b * (a * -0.25);
	double t_3 = t * (z * 0.0625);
	double tmp;
	if (t <= -9.2e+73) {
		tmp = t_3;
	} else if (t <= 7.2e-230) {
		tmp = t_1;
	} else if (t <= 6.2e-172) {
		tmp = t_2;
	} else if (t <= 3.1e+81) {
		tmp = t_1;
	} else if (t <= 2e+114) {
		tmp = t_2;
	} else {
		tmp = t_3;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = c + (x * y)
	t_2 = b * (a * -0.25)
	t_3 = t * (z * 0.0625)
	tmp = 0
	if t <= -9.2e+73:
		tmp = t_3
	elif t <= 7.2e-230:
		tmp = t_1
	elif t <= 6.2e-172:
		tmp = t_2
	elif t <= 3.1e+81:
		tmp = t_1
	elif t <= 2e+114:
		tmp = t_2
	else:
		tmp = t_3
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(c + Float64(x * y))
	t_2 = Float64(b * Float64(a * -0.25))
	t_3 = Float64(t * Float64(z * 0.0625))
	tmp = 0.0
	if (t <= -9.2e+73)
		tmp = t_3;
	elseif (t <= 7.2e-230)
		tmp = t_1;
	elseif (t <= 6.2e-172)
		tmp = t_2;
	elseif (t <= 3.1e+81)
		tmp = t_1;
	elseif (t <= 2e+114)
		tmp = t_2;
	else
		tmp = t_3;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = c + (x * y);
	t_2 = b * (a * -0.25);
	t_3 = t * (z * 0.0625);
	tmp = 0.0;
	if (t <= -9.2e+73)
		tmp = t_3;
	elseif (t <= 7.2e-230)
		tmp = t_1;
	elseif (t <= 6.2e-172)
		tmp = t_2;
	elseif (t <= 3.1e+81)
		tmp = t_1;
	elseif (t <= 2e+114)
		tmp = t_2;
	else
		tmp = t_3;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(b * N[(a * -0.25), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$3 = N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t, -9.2e+73], t$95$3, If[LessEqual[t, 7.2e-230], t$95$1, If[LessEqual[t, 6.2e-172], t$95$2, If[LessEqual[t, 3.1e+81], t$95$1, If[LessEqual[t, 2e+114], t$95$2, t$95$3]]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := c + x \cdot y\\
t_2 := b \cdot \left(a \cdot -0.25\right)\\
t_3 := t \cdot \left(z \cdot 0.0625\right)\\
\mathbf{if}\;t \leq -9.2 \cdot 10^{+73}:\\
\;\;\;\;t\_3\\

\mathbf{elif}\;t \leq 7.2 \cdot 10^{-230}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;t \leq 6.2 \cdot 10^{-172}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t \leq 3.1 \cdot 10^{+81}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;t \leq 2 \cdot 10^{+114}:\\
\;\;\;\;t\_2\\

\mathbf{else}:\\
\;\;\;\;t\_3\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if t < -9.199999999999999e73 or 2e114 < t

    1. Initial program 89.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 80.2%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in t around inf 58.2%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} \]
    5. Step-by-step derivation
      1. associate-*r*59.1%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} \]
      2. *-commutative59.1%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z \]
      3. associate-*r*59.1%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]
    6. Simplified59.1%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]

    if -9.199999999999999e73 < t < 7.1999999999999997e-230 or 6.2000000000000005e-172 < t < 3.1e81

    1. Initial program 99.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 60.3%

      \[\leadsto \color{blue}{x \cdot y} + c \]

    if 7.1999999999999997e-230 < t < 6.2000000000000005e-172 or 3.1e81 < t < 2e114

    1. Initial program 93.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 93.3%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in b around inf 66.8%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} \]
    5. Step-by-step derivation
      1. associate-*r*66.8%

        \[\leadsto \color{blue}{\left(-0.25 \cdot a\right) \cdot b} \]
      2. *-commutative66.8%

        \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
    6. Simplified66.8%

      \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification60.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;t \leq -9.2 \cdot 10^{+73}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;t \leq 7.2 \cdot 10^{-230}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;t \leq 6.2 \cdot 10^{-172}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{elif}\;t \leq 3.1 \cdot 10^{+81}:\\ \;\;\;\;c + x \cdot y\\ \mathbf{elif}\;t \leq 2 \cdot 10^{+114}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 8: 38.5% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := b \cdot \left(a \cdot -0.25\right)\\ t_2 := t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{if}\;t \leq -5.2 \cdot 10^{-75}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t \leq 5.5 \cdot 10^{-230}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;t \leq 10^{-160}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;t \leq 1.3 \cdot 10^{+82}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;t \leq 4.2 \cdot 10^{+117}:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* b (* a -0.25))) (t_2 (* t (* z 0.0625))))
   (if (<= t -5.2e-75)
     t_2
     (if (<= t 5.5e-230)
       (* x y)
       (if (<= t 1e-160)
         t_1
         (if (<= t 1.3e+82) (* x y) (if (<= t 4.2e+117) t_1 t_2)))))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = b * (a * -0.25);
	double t_2 = t * (z * 0.0625);
	double tmp;
	if (t <= -5.2e-75) {
		tmp = t_2;
	} else if (t <= 5.5e-230) {
		tmp = x * y;
	} else if (t <= 1e-160) {
		tmp = t_1;
	} else if (t <= 1.3e+82) {
		tmp = x * y;
	} else if (t <= 4.2e+117) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = b * (a * (-0.25d0))
    t_2 = t * (z * 0.0625d0)
    if (t <= (-5.2d-75)) then
        tmp = t_2
    else if (t <= 5.5d-230) then
        tmp = x * y
    else if (t <= 1d-160) then
        tmp = t_1
    else if (t <= 1.3d+82) then
        tmp = x * y
    else if (t <= 4.2d+117) then
        tmp = t_1
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = b * (a * -0.25);
	double t_2 = t * (z * 0.0625);
	double tmp;
	if (t <= -5.2e-75) {
		tmp = t_2;
	} else if (t <= 5.5e-230) {
		tmp = x * y;
	} else if (t <= 1e-160) {
		tmp = t_1;
	} else if (t <= 1.3e+82) {
		tmp = x * y;
	} else if (t <= 4.2e+117) {
		tmp = t_1;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = b * (a * -0.25)
	t_2 = t * (z * 0.0625)
	tmp = 0
	if t <= -5.2e-75:
		tmp = t_2
	elif t <= 5.5e-230:
		tmp = x * y
	elif t <= 1e-160:
		tmp = t_1
	elif t <= 1.3e+82:
		tmp = x * y
	elif t <= 4.2e+117:
		tmp = t_1
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(b * Float64(a * -0.25))
	t_2 = Float64(t * Float64(z * 0.0625))
	tmp = 0.0
	if (t <= -5.2e-75)
		tmp = t_2;
	elseif (t <= 5.5e-230)
		tmp = Float64(x * y);
	elseif (t <= 1e-160)
		tmp = t_1;
	elseif (t <= 1.3e+82)
		tmp = Float64(x * y);
	elseif (t <= 4.2e+117)
		tmp = t_1;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = b * (a * -0.25);
	t_2 = t * (z * 0.0625);
	tmp = 0.0;
	if (t <= -5.2e-75)
		tmp = t_2;
	elseif (t <= 5.5e-230)
		tmp = x * y;
	elseif (t <= 1e-160)
		tmp = t_1;
	elseif (t <= 1.3e+82)
		tmp = x * y;
	elseif (t <= 4.2e+117)
		tmp = t_1;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(b * N[(a * -0.25), $MachinePrecision]), $MachinePrecision]}, Block[{t$95$2 = N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t, -5.2e-75], t$95$2, If[LessEqual[t, 5.5e-230], N[(x * y), $MachinePrecision], If[LessEqual[t, 1e-160], t$95$1, If[LessEqual[t, 1.3e+82], N[(x * y), $MachinePrecision], If[LessEqual[t, 4.2e+117], t$95$1, t$95$2]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := b \cdot \left(a \cdot -0.25\right)\\
t_2 := t \cdot \left(z \cdot 0.0625\right)\\
\mathbf{if}\;t \leq -5.2 \cdot 10^{-75}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t \leq 5.5 \cdot 10^{-230}:\\
\;\;\;\;x \cdot y\\

\mathbf{elif}\;t \leq 10^{-160}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;t \leq 1.3 \cdot 10^{+82}:\\
\;\;\;\;x \cdot y\\

\mathbf{elif}\;t \leq 4.2 \cdot 10^{+117}:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;t\_2\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if t < -5.2e-75 or 4.2000000000000002e117 < t

    1. Initial program 92.2%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 79.7%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in t around inf 50.4%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} \]
    5. Step-by-step derivation
      1. associate-*r*51.0%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} \]
      2. *-commutative51.0%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z \]
      3. associate-*r*51.0%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]
    6. Simplified51.0%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} \]

    if -5.2e-75 < t < 5.4999999999999997e-230 or 9.9999999999999999e-161 < t < 1.2999999999999999e82

    1. Initial program 99.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 77.7%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in x around inf 43.5%

      \[\leadsto \color{blue}{x \cdot y} \]

    if 5.4999999999999997e-230 < t < 9.9999999999999999e-161 or 1.2999999999999999e82 < t < 4.2000000000000002e117

    1. Initial program 93.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 93.3%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in b around inf 66.8%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} \]
    5. Step-by-step derivation
      1. associate-*r*66.8%

        \[\leadsto \color{blue}{\left(-0.25 \cdot a\right) \cdot b} \]
      2. *-commutative66.8%

        \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
    6. Simplified66.8%

      \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification48.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;t \leq -5.2 \cdot 10^{-75}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;t \leq 5.5 \cdot 10^{-230}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;t \leq 10^{-160}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{elif}\;t \leq 1.3 \cdot 10^{+82}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;t \leq 4.2 \cdot 10^{+117}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;t \cdot \left(z \cdot 0.0625\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 9: 59.2% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -3.3 \cdot 10^{+134} \lor \neg \left(z \leq -2.2 \cdot 10^{+63}\right) \land \left(z \leq -1100 \lor \neg \left(z \leq 2.3 \cdot 10^{-102}\right)\right):\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{else}:\\ \;\;\;\;x \cdot y - \left(a \cdot b\right) \cdot 0.25\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (or (<= z -3.3e+134)
         (and (not (<= z -2.2e+63)) (or (<= z -1100.0) (not (<= z 2.3e-102)))))
   (+ c (* t (* z 0.0625)))
   (- (* x y) (* (* a b) 0.25))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((z <= -3.3e+134) || (!(z <= -2.2e+63) && ((z <= -1100.0) || !(z <= 2.3e-102)))) {
		tmp = c + (t * (z * 0.0625));
	} else {
		tmp = (x * y) - ((a * b) * 0.25);
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if ((z <= (-3.3d+134)) .or. (.not. (z <= (-2.2d+63))) .and. (z <= (-1100.0d0)) .or. (.not. (z <= 2.3d-102))) then
        tmp = c + (t * (z * 0.0625d0))
    else
        tmp = (x * y) - ((a * b) * 0.25d0)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((z <= -3.3e+134) || (!(z <= -2.2e+63) && ((z <= -1100.0) || !(z <= 2.3e-102)))) {
		tmp = c + (t * (z * 0.0625));
	} else {
		tmp = (x * y) - ((a * b) * 0.25);
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if (z <= -3.3e+134) or (not (z <= -2.2e+63) and ((z <= -1100.0) or not (z <= 2.3e-102))):
		tmp = c + (t * (z * 0.0625))
	else:
		tmp = (x * y) - ((a * b) * 0.25)
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if ((z <= -3.3e+134) || (!(z <= -2.2e+63) && ((z <= -1100.0) || !(z <= 2.3e-102))))
		tmp = Float64(c + Float64(t * Float64(z * 0.0625)));
	else
		tmp = Float64(Float64(x * y) - Float64(Float64(a * b) * 0.25));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if ((z <= -3.3e+134) || (~((z <= -2.2e+63)) && ((z <= -1100.0) || ~((z <= 2.3e-102)))))
		tmp = c + (t * (z * 0.0625));
	else
		tmp = (x * y) - ((a * b) * 0.25);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[Or[LessEqual[z, -3.3e+134], And[N[Not[LessEqual[z, -2.2e+63]], $MachinePrecision], Or[LessEqual[z, -1100.0], N[Not[LessEqual[z, 2.3e-102]], $MachinePrecision]]]], N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * y), $MachinePrecision] - N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -3.3 \cdot 10^{+134} \lor \neg \left(z \leq -2.2 \cdot 10^{+63}\right) \land \left(z \leq -1100 \lor \neg \left(z \leq 2.3 \cdot 10^{-102}\right)\right):\\
\;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\

\mathbf{else}:\\
\;\;\;\;x \cdot y - \left(a \cdot b\right) \cdot 0.25\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -3.3e134 or -2.1999999999999999e63 < z < -1100 or 2.29999999999999987e-102 < z

    1. Initial program 93.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 65.3%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*65.9%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative65.9%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*65.9%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified65.9%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]

    if -3.3e134 < z < -2.1999999999999999e63 or -1100 < z < 2.29999999999999987e-102

    1. Initial program 97.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 89.1%

      \[\leadsto \color{blue}{\left(c + x \cdot y\right) - 0.25 \cdot \left(a \cdot b\right)} \]
    4. Taylor expanded in c around 0 70.7%

      \[\leadsto \color{blue}{x \cdot y - 0.25 \cdot \left(a \cdot b\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification68.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.3 \cdot 10^{+134} \lor \neg \left(z \leq -2.2 \cdot 10^{+63}\right) \land \left(z \leq -1100 \lor \neg \left(z \leq 2.3 \cdot 10^{-102}\right)\right):\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{else}:\\ \;\;\;\;x \cdot y - \left(a \cdot b\right) \cdot 0.25\\ \end{array} \]
  5. Add Preprocessing

Alternative 10: 88.8% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(a \cdot b\right) \cdot 0.25\\ \mathbf{if}\;x \cdot y \leq -0.0205 \lor \neg \left(x \cdot y \leq 2.6 \cdot 10^{+109}\right):\\ \;\;\;\;\left(c + x \cdot y\right) - t\_1\\ \mathbf{else}:\\ \;\;\;\;\left(c + \left(z \cdot t\right) \cdot 0.0625\right) - t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* (* a b) 0.25)))
   (if (or (<= (* x y) -0.0205) (not (<= (* x y) 2.6e+109)))
     (- (+ c (* x y)) t_1)
     (- (+ c (* (* z t) 0.0625)) t_1))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double tmp;
	if (((x * y) <= -0.0205) || !((x * y) <= 2.6e+109)) {
		tmp = (c + (x * y)) - t_1;
	} else {
		tmp = (c + ((z * t) * 0.0625)) - t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (a * b) * 0.25d0
    if (((x * y) <= (-0.0205d0)) .or. (.not. ((x * y) <= 2.6d+109))) then
        tmp = (c + (x * y)) - t_1
    else
        tmp = (c + ((z * t) * 0.0625d0)) - 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 c) {
	double t_1 = (a * b) * 0.25;
	double tmp;
	if (((x * y) <= -0.0205) || !((x * y) <= 2.6e+109)) {
		tmp = (c + (x * y)) - t_1;
	} else {
		tmp = (c + ((z * t) * 0.0625)) - t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (a * b) * 0.25
	tmp = 0
	if ((x * y) <= -0.0205) or not ((x * y) <= 2.6e+109):
		tmp = (c + (x * y)) - t_1
	else:
		tmp = (c + ((z * t) * 0.0625)) - t_1
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(a * b) * 0.25)
	tmp = 0.0
	if ((Float64(x * y) <= -0.0205) || !(Float64(x * y) <= 2.6e+109))
		tmp = Float64(Float64(c + Float64(x * y)) - t_1);
	else
		tmp = Float64(Float64(c + Float64(Float64(z * t) * 0.0625)) - t_1);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (a * b) * 0.25;
	tmp = 0.0;
	if (((x * y) <= -0.0205) || ~(((x * y) <= 2.6e+109)))
		tmp = (c + (x * y)) - t_1;
	else
		tmp = (c + ((z * t) * 0.0625)) - t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]}, If[Or[LessEqual[N[(x * y), $MachinePrecision], -0.0205], N[Not[LessEqual[N[(x * y), $MachinePrecision], 2.6e+109]], $MachinePrecision]], N[(N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision] - t$95$1), $MachinePrecision], N[(N[(c + N[(N[(z * t), $MachinePrecision] * 0.0625), $MachinePrecision]), $MachinePrecision] - t$95$1), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(a \cdot b\right) \cdot 0.25\\
\mathbf{if}\;x \cdot y \leq -0.0205 \lor \neg \left(x \cdot y \leq 2.6 \cdot 10^{+109}\right):\\
\;\;\;\;\left(c + x \cdot y\right) - t\_1\\

\mathbf{else}:\\
\;\;\;\;\left(c + \left(z \cdot t\right) \cdot 0.0625\right) - t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 x y) < -0.0205000000000000009 or 2.5999999999999998e109 < (*.f64 x y)

    1. Initial program 94.3%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 84.7%

      \[\leadsto \color{blue}{\left(c + x \cdot y\right) - 0.25 \cdot \left(a \cdot b\right)} \]

    if -0.0205000000000000009 < (*.f64 x y) < 2.5999999999999998e109

    1. Initial program 96.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 91.5%

      \[\leadsto \color{blue}{\left(c + 0.0625 \cdot \left(t \cdot z\right)\right) - 0.25 \cdot \left(a \cdot b\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification88.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -0.0205 \lor \neg \left(x \cdot y \leq 2.6 \cdot 10^{+109}\right):\\ \;\;\;\;\left(c + x \cdot y\right) - \left(a \cdot b\right) \cdot 0.25\\ \mathbf{else}:\\ \;\;\;\;\left(c + \left(z \cdot t\right) \cdot 0.0625\right) - \left(a \cdot b\right) \cdot 0.25\\ \end{array} \]
  5. Add Preprocessing

Alternative 11: 44.0% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+59}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;x \cdot y \leq -2.9 \cdot 10^{-24}:\\ \;\;\;\;c\\ \mathbf{elif}\;x \cdot y \leq 3.1 \cdot 10^{+130}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;x \cdot y\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (<= (* x y) -1e+59)
   (* x y)
   (if (<= (* x y) -2.9e-24)
     c
     (if (<= (* x y) 3.1e+130) (* b (* a -0.25)) (* x y)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((x * y) <= -1e+59) {
		tmp = x * y;
	} else if ((x * y) <= -2.9e-24) {
		tmp = c;
	} else if ((x * y) <= 3.1e+130) {
		tmp = b * (a * -0.25);
	} else {
		tmp = x * y;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if ((x * y) <= (-1d+59)) then
        tmp = x * y
    else if ((x * y) <= (-2.9d-24)) then
        tmp = c
    else if ((x * y) <= 3.1d+130) then
        tmp = b * (a * (-0.25d0))
    else
        tmp = x * y
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if ((x * y) <= -1e+59) {
		tmp = x * y;
	} else if ((x * y) <= -2.9e-24) {
		tmp = c;
	} else if ((x * y) <= 3.1e+130) {
		tmp = b * (a * -0.25);
	} else {
		tmp = x * y;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if (x * y) <= -1e+59:
		tmp = x * y
	elif (x * y) <= -2.9e-24:
		tmp = c
	elif (x * y) <= 3.1e+130:
		tmp = b * (a * -0.25)
	else:
		tmp = x * y
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if (Float64(x * y) <= -1e+59)
		tmp = Float64(x * y);
	elseif (Float64(x * y) <= -2.9e-24)
		tmp = c;
	elseif (Float64(x * y) <= 3.1e+130)
		tmp = Float64(b * Float64(a * -0.25));
	else
		tmp = Float64(x * y);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if ((x * y) <= -1e+59)
		tmp = x * y;
	elseif ((x * y) <= -2.9e-24)
		tmp = c;
	elseif ((x * y) <= 3.1e+130)
		tmp = b * (a * -0.25);
	else
		tmp = x * y;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[LessEqual[N[(x * y), $MachinePrecision], -1e+59], N[(x * y), $MachinePrecision], If[LessEqual[N[(x * y), $MachinePrecision], -2.9e-24], c, If[LessEqual[N[(x * y), $MachinePrecision], 3.1e+130], N[(b * N[(a * -0.25), $MachinePrecision]), $MachinePrecision], N[(x * y), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+59}:\\
\;\;\;\;x \cdot y\\

\mathbf{elif}\;x \cdot y \leq -2.9 \cdot 10^{-24}:\\
\;\;\;\;c\\

\mathbf{elif}\;x \cdot y \leq 3.1 \cdot 10^{+130}:\\
\;\;\;\;b \cdot \left(a \cdot -0.25\right)\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -9.99999999999999972e58 or 3.1e130 < (*.f64 x y)

    1. Initial program 93.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 77.9%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in x around inf 69.9%

      \[\leadsto \color{blue}{x \cdot y} \]

    if -9.99999999999999972e58 < (*.f64 x y) < -2.8999999999999999e-24

    1. Initial program 100.0%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in c around inf 45.7%

      \[\leadsto \color{blue}{c} \]

    if -2.8999999999999999e-24 < (*.f64 x y) < 3.1e130

    1. Initial program 96.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 80.2%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in b around inf 33.3%

      \[\leadsto \color{blue}{-0.25 \cdot \left(a \cdot b\right)} \]
    5. Step-by-step derivation
      1. associate-*r*33.3%

        \[\leadsto \color{blue}{\left(-0.25 \cdot a\right) \cdot b} \]
      2. *-commutative33.3%

        \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
    6. Simplified33.3%

      \[\leadsto \color{blue}{b \cdot \left(-0.25 \cdot a\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification46.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+59}:\\ \;\;\;\;x \cdot y\\ \mathbf{elif}\;x \cdot y \leq -2.9 \cdot 10^{-24}:\\ \;\;\;\;c\\ \mathbf{elif}\;x \cdot y \leq 3.1 \cdot 10^{+130}:\\ \;\;\;\;b \cdot \left(a \cdot -0.25\right)\\ \mathbf{else}:\\ \;\;\;\;x \cdot y\\ \end{array} \]
  5. Add Preprocessing

Alternative 12: 75.2% accurate, 0.8× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(a \cdot b\right) \cdot 0.25\\ \mathbf{if}\;z \leq -3.3 \cdot 10^{+134}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;z \leq 1.38 \cdot 10^{-74}:\\ \;\;\;\;\left(c + x \cdot y\right) - t\_1\\ \mathbf{else}:\\ \;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (let* ((t_1 (* (* a b) 0.25)))
   (if (<= z -3.3e+134)
     (+ c (* t (* z 0.0625)))
     (if (<= z 1.38e-74) (- (+ c (* x y)) t_1) (- (* (* z t) 0.0625) t_1)))))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double t_1 = (a * b) * 0.25;
	double tmp;
	if (z <= -3.3e+134) {
		tmp = c + (t * (z * 0.0625));
	} else if (z <= 1.38e-74) {
		tmp = (c + (x * y)) - t_1;
	} else {
		tmp = ((z * t) * 0.0625) - t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: t_1
    real(8) :: tmp
    t_1 = (a * b) * 0.25d0
    if (z <= (-3.3d+134)) then
        tmp = c + (t * (z * 0.0625d0))
    else if (z <= 1.38d-74) then
        tmp = (c + (x * y)) - t_1
    else
        tmp = ((z * t) * 0.0625d0) - 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 c) {
	double t_1 = (a * b) * 0.25;
	double tmp;
	if (z <= -3.3e+134) {
		tmp = c + (t * (z * 0.0625));
	} else if (z <= 1.38e-74) {
		tmp = (c + (x * y)) - t_1;
	} else {
		tmp = ((z * t) * 0.0625) - t_1;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	t_1 = (a * b) * 0.25
	tmp = 0
	if z <= -3.3e+134:
		tmp = c + (t * (z * 0.0625))
	elif z <= 1.38e-74:
		tmp = (c + (x * y)) - t_1
	else:
		tmp = ((z * t) * 0.0625) - t_1
	return tmp
function code(x, y, z, t, a, b, c)
	t_1 = Float64(Float64(a * b) * 0.25)
	tmp = 0.0
	if (z <= -3.3e+134)
		tmp = Float64(c + Float64(t * Float64(z * 0.0625)));
	elseif (z <= 1.38e-74)
		tmp = Float64(Float64(c + Float64(x * y)) - t_1);
	else
		tmp = Float64(Float64(Float64(z * t) * 0.0625) - t_1);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	t_1 = (a * b) * 0.25;
	tmp = 0.0;
	if (z <= -3.3e+134)
		tmp = c + (t * (z * 0.0625));
	elseif (z <= 1.38e-74)
		tmp = (c + (x * y)) - t_1;
	else
		tmp = ((z * t) * 0.0625) - t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := Block[{t$95$1 = N[(N[(a * b), $MachinePrecision] * 0.25), $MachinePrecision]}, If[LessEqual[z, -3.3e+134], N[(c + N[(t * N[(z * 0.0625), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[z, 1.38e-74], N[(N[(c + N[(x * y), $MachinePrecision]), $MachinePrecision] - t$95$1), $MachinePrecision], N[(N[(N[(z * t), $MachinePrecision] * 0.0625), $MachinePrecision] - t$95$1), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(a \cdot b\right) \cdot 0.25\\
\mathbf{if}\;z \leq -3.3 \cdot 10^{+134}:\\
\;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\

\mathbf{elif}\;z \leq 1.38 \cdot 10^{-74}:\\
\;\;\;\;\left(c + x \cdot y\right) - t\_1\\

\mathbf{else}:\\
\;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -3.3e134

    1. Initial program 97.1%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around inf 72.4%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right)} + c \]
    4. Step-by-step derivation
      1. associate-*r*72.4%

        \[\leadsto \color{blue}{\left(0.0625 \cdot t\right) \cdot z} + c \]
      2. *-commutative72.4%

        \[\leadsto \color{blue}{\left(t \cdot 0.0625\right)} \cdot z + c \]
      3. associate-*r*72.4%

        \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]
    5. Simplified72.4%

      \[\leadsto \color{blue}{t \cdot \left(0.0625 \cdot z\right)} + c \]

    if -3.3e134 < z < 1.38e-74

    1. Initial program 97.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in z around 0 87.8%

      \[\leadsto \color{blue}{\left(c + x \cdot y\right) - 0.25 \cdot \left(a \cdot b\right)} \]

    if 1.38e-74 < z

    1. Initial program 91.2%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 83.1%

      \[\leadsto \color{blue}{\left(c + 0.0625 \cdot \left(t \cdot z\right)\right) - 0.25 \cdot \left(a \cdot b\right)} \]
    4. Taylor expanded in c around 0 67.2%

      \[\leadsto \color{blue}{0.0625 \cdot \left(t \cdot z\right) - 0.25 \cdot \left(a \cdot b\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification78.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -3.3 \cdot 10^{+134}:\\ \;\;\;\;c + t \cdot \left(z \cdot 0.0625\right)\\ \mathbf{elif}\;z \leq 1.38 \cdot 10^{-74}:\\ \;\;\;\;\left(c + x \cdot y\right) - \left(a \cdot b\right) \cdot 0.25\\ \mathbf{else}:\\ \;\;\;\;\left(z \cdot t\right) \cdot 0.0625 - \left(a \cdot b\right) \cdot 0.25\\ \end{array} \]
  5. Add Preprocessing

Alternative 13: 42.2% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \cdot y \leq -9.6 \cdot 10^{+58} \lor \neg \left(x \cdot y \leq 2.8 \cdot 10^{+57}\right):\\ \;\;\;\;x \cdot y\\ \mathbf{else}:\\ \;\;\;\;c\\ \end{array} \end{array} \]
(FPCore (x y z t a b c)
 :precision binary64
 (if (or (<= (* x y) -9.6e+58) (not (<= (* x y) 2.8e+57))) (* x y) c))
double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((x * y) <= -9.6e+58) || !((x * y) <= 2.8e+57)) {
		tmp = x * y;
	} else {
		tmp = c;
	}
	return tmp;
}
real(8) function code(x, y, z, t, a, b, c)
    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), intent (in) :: c
    real(8) :: tmp
    if (((x * y) <= (-9.6d+58)) .or. (.not. ((x * y) <= 2.8d+57))) then
        tmp = x * y
    else
        tmp = c
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a, double b, double c) {
	double tmp;
	if (((x * y) <= -9.6e+58) || !((x * y) <= 2.8e+57)) {
		tmp = x * y;
	} else {
		tmp = c;
	}
	return tmp;
}
def code(x, y, z, t, a, b, c):
	tmp = 0
	if ((x * y) <= -9.6e+58) or not ((x * y) <= 2.8e+57):
		tmp = x * y
	else:
		tmp = c
	return tmp
function code(x, y, z, t, a, b, c)
	tmp = 0.0
	if ((Float64(x * y) <= -9.6e+58) || !(Float64(x * y) <= 2.8e+57))
		tmp = Float64(x * y);
	else
		tmp = c;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a, b, c)
	tmp = 0.0;
	if (((x * y) <= -9.6e+58) || ~(((x * y) <= 2.8e+57)))
		tmp = x * y;
	else
		tmp = c;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_, b_, c_] := If[Or[LessEqual[N[(x * y), $MachinePrecision], -9.6e+58], N[Not[LessEqual[N[(x * y), $MachinePrecision], 2.8e+57]], $MachinePrecision]], N[(x * y), $MachinePrecision], c]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \cdot y \leq -9.6 \cdot 10^{+58} \lor \neg \left(x \cdot y \leq 2.8 \cdot 10^{+57}\right):\\
\;\;\;\;x \cdot y\\

\mathbf{else}:\\
\;\;\;\;c\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 x y) < -9.5999999999999999e58 or 2.8e57 < (*.f64 x y)

    1. Initial program 93.4%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in b around inf 79.8%

      \[\leadsto \color{blue}{b \cdot \left(\left(0.0625 \cdot \frac{t \cdot z}{b} + \left(\frac{c}{b} + \frac{x \cdot y}{b}\right)\right) - 0.25 \cdot a\right)} \]
    4. Taylor expanded in x around inf 62.4%

      \[\leadsto \color{blue}{x \cdot y} \]

    if -9.5999999999999999e58 < (*.f64 x y) < 2.8e57

    1. Initial program 96.7%

      \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
    2. Add Preprocessing
    3. Taylor expanded in c around inf 30.0%

      \[\leadsto \color{blue}{c} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification43.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -9.6 \cdot 10^{+58} \lor \neg \left(x \cdot y \leq 2.8 \cdot 10^{+57}\right):\\ \;\;\;\;x \cdot y\\ \mathbf{else}:\\ \;\;\;\;c\\ \end{array} \]
  5. Add Preprocessing

Alternative 14: 22.9% accurate, 17.0× speedup?

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

\\
c
\end{array}
Derivation
  1. Initial program 95.4%

    \[\left(\left(x \cdot y + \frac{z \cdot t}{16}\right) - \frac{a \cdot b}{4}\right) + c \]
  2. Add Preprocessing
  3. Taylor expanded in c around inf 19.8%

    \[\leadsto \color{blue}{c} \]
  4. Add Preprocessing

Reproduce

?
herbie shell --seed 2024089 
(FPCore (x y z t a b c)
  :name "Diagrams.Solve.Polynomial:quartForm  from diagrams-solve-0.1, C"
  :precision binary64
  (+ (- (+ (* x y) (/ (* z t) 16.0)) (/ (* a b) 4.0)) c))