Diagrams.Solve.Polynomial:cubForm from diagrams-solve-0.1, I

Percentage Accurate: 91.1% → 95.4%
Time: 8.6s
Alternatives: 9
Speedup: 0.5×

Specification

?
\[\begin{array}{l} \\ \frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (/ (- (* x y) (* (* z 9.0) t)) (* a 2.0)))
double code(double x, double y, double z, double t, double a) {
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
}
real(8) function code(x, y, z, t, a)
    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
    code = ((x * y) - ((z * 9.0d0) * t)) / (a * 2.0d0)
end function
public static double code(double x, double y, double z, double t, double a) {
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
}
def code(x, y, z, t, a):
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0)
function code(x, y, z, t, a)
	return Float64(Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t)) / Float64(a * 2.0))
end
function tmp = code(x, y, z, t, a)
	tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
end
code[x_, y_, z_, t_, a_] := N[(N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}
\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 9 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: 91.1% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (/ (- (* x y) (* (* z 9.0) t)) (* a 2.0)))
double code(double x, double y, double z, double t, double a) {
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
}
real(8) function code(x, y, z, t, a)
    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
    code = ((x * y) - ((z * 9.0d0) * t)) / (a * 2.0d0)
end function
public static double code(double x, double y, double z, double t, double a) {
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
}
def code(x, y, z, t, a):
	return ((x * y) - ((z * 9.0) * t)) / (a * 2.0)
function code(x, y, z, t, a)
	return Float64(Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t)) / Float64(a * 2.0))
end
function tmp = code(x, y, z, t, a)
	tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
end
code[x_, y_, z_, t_, a_] := N[(N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}
\end{array}

Alternative 1: 95.4% accurate, 0.3× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} t_1 := x \cdot y - \left(z \cdot 9\right) \cdot t\\ \mathbf{if}\;t\_1 \leq -1 \cdot 10^{+302}:\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{elif}\;t\_1 \leq 10^{+306}:\\ \;\;\;\;\frac{t\_1}{a \cdot 2}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(-4.5 \cdot \frac{z \cdot t}{y \cdot a} + 0.5 \cdot \frac{x}{a}\right)\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (- (* x y) (* (* z 9.0) t))))
   (if (<= t_1 -1e+302)
     (- (* x (/ y (* a 2.0))) (* z (/ (* t 4.5) a)))
     (if (<= t_1 1e+306)
       (/ t_1 (* a 2.0))
       (* y (+ (* -4.5 (/ (* z t) (* y a))) (* 0.5 (/ x a))))))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double t_1 = (x * y) - ((z * 9.0) * t);
	double tmp;
	if (t_1 <= -1e+302) {
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	} else if (t_1 <= 1e+306) {
		tmp = t_1 / (a * 2.0);
	} else {
		tmp = y * ((-4.5 * ((z * t) / (y * a))) + (0.5 * (x / a)));
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: t_1
    real(8) :: tmp
    t_1 = (x * y) - ((z * 9.0d0) * t)
    if (t_1 <= (-1d+302)) then
        tmp = (x * (y / (a * 2.0d0))) - (z * ((t * 4.5d0) / a))
    else if (t_1 <= 1d+306) then
        tmp = t_1 / (a * 2.0d0)
    else
        tmp = y * (((-4.5d0) * ((z * t) / (y * a))) + (0.5d0 * (x / a)))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (x * y) - ((z * 9.0) * t);
	double tmp;
	if (t_1 <= -1e+302) {
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	} else if (t_1 <= 1e+306) {
		tmp = t_1 / (a * 2.0);
	} else {
		tmp = y * ((-4.5 * ((z * t) / (y * a))) + (0.5 * (x / a)));
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	t_1 = (x * y) - ((z * 9.0) * t)
	tmp = 0
	if t_1 <= -1e+302:
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a))
	elif t_1 <= 1e+306:
		tmp = t_1 / (a * 2.0)
	else:
		tmp = y * ((-4.5 * ((z * t) / (y * a))) + (0.5 * (x / a)))
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	t_1 = Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t))
	tmp = 0.0
	if (t_1 <= -1e+302)
		tmp = Float64(Float64(x * Float64(y / Float64(a * 2.0))) - Float64(z * Float64(Float64(t * 4.5) / a)));
	elseif (t_1 <= 1e+306)
		tmp = Float64(t_1 / Float64(a * 2.0));
	else
		tmp = Float64(y * Float64(Float64(-4.5 * Float64(Float64(z * t) / Float64(y * a))) + Float64(0.5 * Float64(x / a))));
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	t_1 = (x * y) - ((z * 9.0) * t);
	tmp = 0.0;
	if (t_1 <= -1e+302)
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	elseif (t_1 <= 1e+306)
		tmp = t_1 / (a * 2.0);
	else
		tmp = y * ((-4.5 * ((z * t) / (y * a))) + (0.5 * (x / a)));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, -1e+302], N[(N[(x * N[(y / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(z * N[(N[(t * 4.5), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[LessEqual[t$95$1, 1e+306], N[(t$95$1 / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], N[(y * N[(N[(-4.5 * N[(N[(z * t), $MachinePrecision] / N[(y * a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] + N[(0.5 * N[(x / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
t_1 := x \cdot y - \left(z \cdot 9\right) \cdot t\\
\mathbf{if}\;t\_1 \leq -1 \cdot 10^{+302}:\\
\;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\

\mathbf{elif}\;t\_1 \leq 10^{+306}:\\
\;\;\;\;\frac{t\_1}{a \cdot 2}\\

\mathbf{else}:\\
\;\;\;\;y \cdot \left(-4.5 \cdot \frac{z \cdot t}{y \cdot a} + 0.5 \cdot \frac{x}{a}\right)\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t)) < -1.0000000000000001e302

    1. Initial program 68.5%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. div-sub65.7%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot 2} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2}} \]
      2. associate-/l*81.2%

        \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2}} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
      3. associate-/l*94.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    4. Applied egg-rr94.2%

      \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2} - \left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    5. Taylor expanded in z around 0 81.2%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{4.5 \cdot \frac{t \cdot z}{a}} \]
    6. Step-by-step derivation
      1. associate-*r/81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\frac{4.5 \cdot \left(t \cdot z\right)}{a}} \]
      2. metadata-eval81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{\left(--4.5\right)} \cdot \left(t \cdot z\right)}{a} \]
      3. distribute-lft-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{--4.5 \cdot \left(t \cdot z\right)}}{a} \]
      4. associate-*r*81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
      5. *-commutative81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(t \cdot -4.5\right)} \cdot z}{a} \]
      6. *-commutative81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{z \cdot \left(t \cdot -4.5\right)}}{a} \]
      7. distribute-rgt-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{z \cdot \left(-t \cdot -4.5\right)}}{a} \]
      8. distribute-rgt-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \color{blue}{\left(t \cdot \left(--4.5\right)\right)}}{a} \]
      9. metadata-eval81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \left(t \cdot \color{blue}{4.5}\right)}{a} \]
      10. associate-*r/94.3%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]
    7. Simplified94.3%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]

    if -1.0000000000000001e302 < (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t)) < 1.00000000000000002e306

    1. Initial program 98.2%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing

    if 1.00000000000000002e306 < (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t))

    1. Initial program 62.6%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in y around inf 82.9%

      \[\leadsto \color{blue}{y \cdot \left(-4.5 \cdot \frac{t \cdot z}{a \cdot y} + 0.5 \cdot \frac{x}{a}\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification96.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq -1 \cdot 10^{+302}:\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{elif}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq 10^{+306}:\\ \;\;\;\;\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(-4.5 \cdot \frac{z \cdot t}{y \cdot a} + 0.5 \cdot \frac{x}{a}\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 2: 94.1% accurate, 0.1× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} \mathbf{if}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq -1 \cdot 10^{+302}:\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{a \cdot 2}\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (if (<= (- (* x y) (* (* z 9.0) t)) -1e+302)
   (- (* x (/ y (* a 2.0))) (* z (/ (* t 4.5) a)))
   (/ (fma x y (* z (* t -9.0))) (* a 2.0))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (((x * y) - ((z * 9.0) * t)) <= -1e+302) {
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	} else {
		tmp = fma(x, y, (z * (t * -9.0))) / (a * 2.0);
	}
	return tmp;
}
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	tmp = 0.0
	if (Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t)) <= -1e+302)
		tmp = Float64(Float64(x * Float64(y / Float64(a * 2.0))) - Float64(z * Float64(Float64(t * 4.5) / a)));
	else
		tmp = Float64(fma(x, y, Float64(z * Float64(t * -9.0))) / Float64(a * 2.0));
	end
	return tmp
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := If[LessEqual[N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision], -1e+302], N[(N[(x * N[(y / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(z * N[(N[(t * 4.5), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(x * y + N[(z * N[(t * -9.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
\mathbf{if}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq -1 \cdot 10^{+302}:\\
\;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\

\mathbf{else}:\\
\;\;\;\;\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{a \cdot 2}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t)) < -1.0000000000000001e302

    1. Initial program 68.5%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. div-sub65.7%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot 2} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2}} \]
      2. associate-/l*81.2%

        \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2}} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
      3. associate-/l*94.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    4. Applied egg-rr94.2%

      \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2} - \left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    5. Taylor expanded in z around 0 81.2%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{4.5 \cdot \frac{t \cdot z}{a}} \]
    6. Step-by-step derivation
      1. associate-*r/81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\frac{4.5 \cdot \left(t \cdot z\right)}{a}} \]
      2. metadata-eval81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{\left(--4.5\right)} \cdot \left(t \cdot z\right)}{a} \]
      3. distribute-lft-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{--4.5 \cdot \left(t \cdot z\right)}}{a} \]
      4. associate-*r*81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
      5. *-commutative81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(t \cdot -4.5\right)} \cdot z}{a} \]
      6. *-commutative81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{z \cdot \left(t \cdot -4.5\right)}}{a} \]
      7. distribute-rgt-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{z \cdot \left(-t \cdot -4.5\right)}}{a} \]
      8. distribute-rgt-neg-in81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \color{blue}{\left(t \cdot \left(--4.5\right)\right)}}{a} \]
      9. metadata-eval81.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \left(t \cdot \color{blue}{4.5}\right)}{a} \]
      10. associate-*r/94.3%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]
    7. Simplified94.3%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]

    if -1.0000000000000001e302 < (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t))

    1. Initial program 94.5%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Step-by-step derivation
      1. div-sub92.2%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot 2} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2}} \]
      2. *-commutative92.2%

        \[\leadsto \frac{\color{blue}{y \cdot x}}{a \cdot 2} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
      3. div-sub94.5%

        \[\leadsto \color{blue}{\frac{y \cdot x - \left(z \cdot 9\right) \cdot t}{a \cdot 2}} \]
      4. cancel-sign-sub-inv94.5%

        \[\leadsto \frac{\color{blue}{y \cdot x + \left(-z \cdot 9\right) \cdot t}}{a \cdot 2} \]
      5. *-commutative94.5%

        \[\leadsto \frac{\color{blue}{x \cdot y} + \left(-z \cdot 9\right) \cdot t}{a \cdot 2} \]
      6. fma-define94.9%

        \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(x, y, \left(-z \cdot 9\right) \cdot t\right)}}{a \cdot 2} \]
      7. distribute-rgt-neg-in94.9%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(z \cdot \left(-9\right)\right)} \cdot t\right)}{a \cdot 2} \]
      8. associate-*r*94.5%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{z \cdot \left(\left(-9\right) \cdot t\right)}\right)}{a \cdot 2} \]
      9. distribute-lft-neg-in94.5%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(-9 \cdot t\right)}\right)}{a \cdot 2} \]
      10. *-commutative94.5%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \left(-\color{blue}{t \cdot 9}\right)\right)}{a \cdot 2} \]
      11. distribute-rgt-neg-in94.5%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(t \cdot \left(-9\right)\right)}\right)}{a \cdot 2} \]
      12. metadata-eval94.5%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot \color{blue}{-9}\right)\right)}{a \cdot 2} \]
    3. Simplified94.5%

      \[\leadsto \color{blue}{\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{a \cdot 2}} \]
    4. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification94.5%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq -1 \cdot 10^{+302}:\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{a \cdot 2}\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 96.9% accurate, 0.3× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} t_1 := x \cdot y - \left(z \cdot 9\right) \cdot t\\ \mathbf{if}\;t\_1 \leq -1 \cdot 10^{+302} \lor \neg \left(t\_1 \leq 10^{+306}\right):\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{t\_1}{a \cdot 2}\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (- (* x y) (* (* z 9.0) t))))
   (if (or (<= t_1 -1e+302) (not (<= t_1 1e+306)))
     (- (* x (/ y (* a 2.0))) (* z (/ (* t 4.5) a)))
     (/ t_1 (* a 2.0)))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double t_1 = (x * y) - ((z * 9.0) * t);
	double tmp;
	if ((t_1 <= -1e+302) || !(t_1 <= 1e+306)) {
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	} else {
		tmp = t_1 / (a * 2.0);
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: t_1
    real(8) :: tmp
    t_1 = (x * y) - ((z * 9.0d0) * t)
    if ((t_1 <= (-1d+302)) .or. (.not. (t_1 <= 1d+306))) then
        tmp = (x * (y / (a * 2.0d0))) - (z * ((t * 4.5d0) / a))
    else
        tmp = t_1 / (a * 2.0d0)
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (x * y) - ((z * 9.0) * t);
	double tmp;
	if ((t_1 <= -1e+302) || !(t_1 <= 1e+306)) {
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	} else {
		tmp = t_1 / (a * 2.0);
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	t_1 = (x * y) - ((z * 9.0) * t)
	tmp = 0
	if (t_1 <= -1e+302) or not (t_1 <= 1e+306):
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a))
	else:
		tmp = t_1 / (a * 2.0)
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	t_1 = Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t))
	tmp = 0.0
	if ((t_1 <= -1e+302) || !(t_1 <= 1e+306))
		tmp = Float64(Float64(x * Float64(y / Float64(a * 2.0))) - Float64(z * Float64(Float64(t * 4.5) / a)));
	else
		tmp = Float64(t_1 / Float64(a * 2.0));
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	t_1 = (x * y) - ((z * 9.0) * t);
	tmp = 0.0;
	if ((t_1 <= -1e+302) || ~((t_1 <= 1e+306)))
		tmp = (x * (y / (a * 2.0))) - (z * ((t * 4.5) / a));
	else
		tmp = t_1 / (a * 2.0);
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[t$95$1, -1e+302], N[Not[LessEqual[t$95$1, 1e+306]], $MachinePrecision]], N[(N[(x * N[(y / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] - N[(z * N[(N[(t * 4.5), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(t$95$1 / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
t_1 := x \cdot y - \left(z \cdot 9\right) \cdot t\\
\mathbf{if}\;t\_1 \leq -1 \cdot 10^{+302} \lor \neg \left(t\_1 \leq 10^{+306}\right):\\
\;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\

\mathbf{else}:\\
\;\;\;\;\frac{t\_1}{a \cdot 2}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t)) < -1.0000000000000001e302 or 1.00000000000000002e306 < (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t))

    1. Initial program 66.2%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. div-sub62.8%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot 2} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2}} \]
      2. associate-/l*80.2%

        \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2}} - \frac{\left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
      3. associate-/l*91.4%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    4. Applied egg-rr91.4%

      \[\leadsto \color{blue}{x \cdot \frac{y}{a \cdot 2} - \left(z \cdot 9\right) \cdot \frac{t}{a \cdot 2}} \]
    5. Taylor expanded in z around 0 80.2%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{4.5 \cdot \frac{t \cdot z}{a}} \]
    6. Step-by-step derivation
      1. associate-*r/80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{\frac{4.5 \cdot \left(t \cdot z\right)}{a}} \]
      2. metadata-eval80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{\left(--4.5\right)} \cdot \left(t \cdot z\right)}{a} \]
      3. distribute-lft-neg-in80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{--4.5 \cdot \left(t \cdot z\right)}}{a} \]
      4. associate-*r*80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
      5. *-commutative80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{\left(t \cdot -4.5\right)} \cdot z}{a} \]
      6. *-commutative80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{-\color{blue}{z \cdot \left(t \cdot -4.5\right)}}{a} \]
      7. distribute-rgt-neg-in80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{\color{blue}{z \cdot \left(-t \cdot -4.5\right)}}{a} \]
      8. distribute-rgt-neg-in80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \color{blue}{\left(t \cdot \left(--4.5\right)\right)}}{a} \]
      9. metadata-eval80.2%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \frac{z \cdot \left(t \cdot \color{blue}{4.5}\right)}{a} \]
      10. associate-*r/91.4%

        \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]
    7. Simplified91.4%

      \[\leadsto x \cdot \frac{y}{a \cdot 2} - \color{blue}{z \cdot \frac{t \cdot 4.5}{a}} \]

    if -1.0000000000000001e302 < (-.f64 (*.f64 x y) (*.f64 (*.f64 z #s(literal 9 binary64)) t)) < 1.00000000000000002e306

    1. Initial program 98.2%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification96.6%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y - \left(z \cdot 9\right) \cdot t \leq -1 \cdot 10^{+302} \lor \neg \left(x \cdot y - \left(z \cdot 9\right) \cdot t \leq 10^{+306}\right):\\ \;\;\;\;x \cdot \frac{y}{a \cdot 2} - z \cdot \frac{t \cdot 4.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 73.2% accurate, 0.4× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82} \lor \neg \left(x \cdot y \leq -2 \cdot 10^{-40} \lor \neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}\right):\\ \;\;\;\;\frac{x}{a} \cdot \frac{y}{2}\\ \mathbf{else}:\\ \;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (if (or (<= (* x y) -1e+82)
         (not
          (or (<= (* x y) -2e-40)
              (and (not (<= (* x y) -5e-70)) (<= (* x y) 1e-19)))))
   (* (/ x a) (/ y 2.0))
   (* -4.5 (/ (* z t) a))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (((x * y) <= -1e+82) || !(((x * y) <= -2e-40) || (!((x * y) <= -5e-70) && ((x * y) <= 1e-19)))) {
		tmp = (x / a) * (y / 2.0);
	} else {
		tmp = -4.5 * ((z * t) / a);
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: tmp
    if (((x * y) <= (-1d+82)) .or. (.not. ((x * y) <= (-2d-40)) .or. (.not. ((x * y) <= (-5d-70))) .and. ((x * y) <= 1d-19))) then
        tmp = (x / a) * (y / 2.0d0)
    else
        tmp = (-4.5d0) * ((z * t) / a)
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (((x * y) <= -1e+82) || !(((x * y) <= -2e-40) || (!((x * y) <= -5e-70) && ((x * y) <= 1e-19)))) {
		tmp = (x / a) * (y / 2.0);
	} else {
		tmp = -4.5 * ((z * t) / a);
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	tmp = 0
	if ((x * y) <= -1e+82) or not (((x * y) <= -2e-40) or (not ((x * y) <= -5e-70) and ((x * y) <= 1e-19))):
		tmp = (x / a) * (y / 2.0)
	else:
		tmp = -4.5 * ((z * t) / a)
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	tmp = 0.0
	if ((Float64(x * y) <= -1e+82) || !((Float64(x * y) <= -2e-40) || (!(Float64(x * y) <= -5e-70) && (Float64(x * y) <= 1e-19))))
		tmp = Float64(Float64(x / a) * Float64(y / 2.0));
	else
		tmp = Float64(-4.5 * Float64(Float64(z * t) / a));
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	tmp = 0.0;
	if (((x * y) <= -1e+82) || ~((((x * y) <= -2e-40) || (~(((x * y) <= -5e-70)) && ((x * y) <= 1e-19)))))
		tmp = (x / a) * (y / 2.0);
	else
		tmp = -4.5 * ((z * t) / a);
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := If[Or[LessEqual[N[(x * y), $MachinePrecision], -1e+82], N[Not[Or[LessEqual[N[(x * y), $MachinePrecision], -2e-40], And[N[Not[LessEqual[N[(x * y), $MachinePrecision], -5e-70]], $MachinePrecision], LessEqual[N[(x * y), $MachinePrecision], 1e-19]]]], $MachinePrecision]], N[(N[(x / a), $MachinePrecision] * N[(y / 2.0), $MachinePrecision]), $MachinePrecision], N[(-4.5 * N[(N[(z * t), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
\mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82} \lor \neg \left(x \cdot y \leq -2 \cdot 10^{-40} \lor \neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}\right):\\
\;\;\;\;\frac{x}{a} \cdot \frac{y}{2}\\

\mathbf{else}:\\
\;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 x y) < -9.9999999999999996e81 or -1.9999999999999999e-40 < (*.f64 x y) < -4.9999999999999998e-70 or 9.9999999999999998e-20 < (*.f64 x y)

    1. Initial program 83.6%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. fma-neg84.4%

        \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(x, y, -\left(z \cdot 9\right) \cdot t\right)}}{a \cdot 2} \]
      2. distribute-lft-neg-in84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-z \cdot 9\right) \cdot t}\right)}{a \cdot 2} \]
      3. distribute-rgt-neg-in84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(z \cdot \left(-9\right)\right)} \cdot t\right)}{a \cdot 2} \]
      4. metadata-eval84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \left(z \cdot \color{blue}{-9}\right) \cdot t\right)}{a \cdot 2} \]
      5. associate-*r*84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{z \cdot \left(-9 \cdot t\right)}\right)}{a \cdot 2} \]
      6. *-commutative84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(t \cdot -9\right)}\right)}{a \cdot 2} \]
      7. *-un-lft-identity84.4%

        \[\leadsto \frac{\color{blue}{1 \cdot \mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}}{a \cdot 2} \]
      8. add-sqr-sqrt40.7%

        \[\leadsto \frac{1 \cdot \mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\color{blue}{\sqrt{a \cdot 2} \cdot \sqrt{a \cdot 2}}} \]
      9. times-frac40.8%

        \[\leadsto \color{blue}{\frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\sqrt{a \cdot 2}}} \]
      10. *-commutative40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(-9 \cdot t\right)}\right)}{\sqrt{a \cdot 2}} \]
      11. associate-*r*40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(z \cdot -9\right) \cdot t}\right)}{\sqrt{a \cdot 2}} \]
      12. metadata-eval40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \left(z \cdot \color{blue}{\left(-9\right)}\right) \cdot t\right)}{\sqrt{a \cdot 2}} \]
      13. distribute-rgt-neg-in40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-z \cdot 9\right)} \cdot t\right)}{\sqrt{a \cdot 2}} \]
      14. *-commutative40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{t \cdot \left(-z \cdot 9\right)}\right)}{\sqrt{a \cdot 2}} \]
      15. distribute-rgt-neg-in40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \color{blue}{\left(z \cdot \left(-9\right)\right)}\right)}{\sqrt{a \cdot 2}} \]
      16. metadata-eval40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot \color{blue}{-9}\right)\right)}{\sqrt{a \cdot 2}} \]
    4. Applied egg-rr40.8%

      \[\leadsto \color{blue}{\frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}} \]
    5. Step-by-step derivation
      1. associate-*l/40.8%

        \[\leadsto \color{blue}{\frac{1 \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}}} \]
      2. *-lft-identity40.8%

        \[\leadsto \frac{\color{blue}{\frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}}{\sqrt{a \cdot 2}} \]
      3. associate-*r*40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(t \cdot z\right) \cdot -9}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      4. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9 \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      5. metadata-eval40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9\right)} \cdot \left(t \cdot z\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      6. distribute-lft-neg-in40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9 \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      7. distribute-lft-neg-in40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9\right) \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      8. metadata-eval40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9} \cdot \left(t \cdot z\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      9. associate-*r*40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9 \cdot t\right) \cdot z}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      10. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{z \cdot \left(-9 \cdot t\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      11. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(t \cdot -9\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
    6. Simplified40.8%

      \[\leadsto \color{blue}{\frac{\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}}} \]
    7. Taylor expanded in x around inf 69.8%

      \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot {\left(\sqrt{2}\right)}^{2}}} \]
    8. Step-by-step derivation
      1. times-frac74.7%

        \[\leadsto \color{blue}{\frac{x}{a} \cdot \frac{y}{{\left(\sqrt{2}\right)}^{2}}} \]
      2. unpow274.7%

        \[\leadsto \frac{x}{a} \cdot \frac{y}{\color{blue}{\sqrt{2} \cdot \sqrt{2}}} \]
      3. rem-square-sqrt75.4%

        \[\leadsto \frac{x}{a} \cdot \frac{y}{\color{blue}{2}} \]
    9. Simplified75.4%

      \[\leadsto \color{blue}{\frac{x}{a} \cdot \frac{y}{2}} \]

    if -9.9999999999999996e81 < (*.f64 x y) < -1.9999999999999999e-40 or -4.9999999999999998e-70 < (*.f64 x y) < 9.9999999999999998e-20

    1. Initial program 97.4%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 79.7%

      \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification77.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82} \lor \neg \left(x \cdot y \leq -2 \cdot 10^{-40} \lor \neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}\right):\\ \;\;\;\;\frac{x}{a} \cdot \frac{y}{2}\\ \mathbf{else}:\\ \;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 73.1% accurate, 0.4× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} t_1 := \frac{x}{a} \cdot \frac{y}{2}\\ \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x \cdot y \leq -2 \cdot 10^{-40}:\\ \;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\ \mathbf{elif}\;\neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}:\\ \;\;\;\;\frac{z \cdot \left(t \cdot -4.5\right)}{a}\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (* (/ x a) (/ y 2.0))))
   (if (<= (* x y) -1e+82)
     t_1
     (if (<= (* x y) -2e-40)
       (* -4.5 (/ (* z t) a))
       (if (and (not (<= (* x y) -5e-70)) (<= (* x y) 1e-19))
         (/ (* z (* t -4.5)) a)
         t_1)))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double t_1 = (x / a) * (y / 2.0);
	double tmp;
	if ((x * y) <= -1e+82) {
		tmp = t_1;
	} else if ((x * y) <= -2e-40) {
		tmp = -4.5 * ((z * t) / a);
	} else if (!((x * y) <= -5e-70) && ((x * y) <= 1e-19)) {
		tmp = (z * (t * -4.5)) / a;
	} else {
		tmp = t_1;
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: t_1
    real(8) :: tmp
    t_1 = (x / a) * (y / 2.0d0)
    if ((x * y) <= (-1d+82)) then
        tmp = t_1
    else if ((x * y) <= (-2d-40)) then
        tmp = (-4.5d0) * ((z * t) / a)
    else if ((.not. ((x * y) <= (-5d-70))) .and. ((x * y) <= 1d-19)) then
        tmp = (z * (t * (-4.5d0))) / a
    else
        tmp = t_1
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (x / a) * (y / 2.0);
	double tmp;
	if ((x * y) <= -1e+82) {
		tmp = t_1;
	} else if ((x * y) <= -2e-40) {
		tmp = -4.5 * ((z * t) / a);
	} else if (!((x * y) <= -5e-70) && ((x * y) <= 1e-19)) {
		tmp = (z * (t * -4.5)) / a;
	} else {
		tmp = t_1;
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	t_1 = (x / a) * (y / 2.0)
	tmp = 0
	if (x * y) <= -1e+82:
		tmp = t_1
	elif (x * y) <= -2e-40:
		tmp = -4.5 * ((z * t) / a)
	elif not ((x * y) <= -5e-70) and ((x * y) <= 1e-19):
		tmp = (z * (t * -4.5)) / a
	else:
		tmp = t_1
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	t_1 = Float64(Float64(x / a) * Float64(y / 2.0))
	tmp = 0.0
	if (Float64(x * y) <= -1e+82)
		tmp = t_1;
	elseif (Float64(x * y) <= -2e-40)
		tmp = Float64(-4.5 * Float64(Float64(z * t) / a));
	elseif (!(Float64(x * y) <= -5e-70) && (Float64(x * y) <= 1e-19))
		tmp = Float64(Float64(z * Float64(t * -4.5)) / a);
	else
		tmp = t_1;
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	t_1 = (x / a) * (y / 2.0);
	tmp = 0.0;
	if ((x * y) <= -1e+82)
		tmp = t_1;
	elseif ((x * y) <= -2e-40)
		tmp = -4.5 * ((z * t) / a);
	elseif (~(((x * y) <= -5e-70)) && ((x * y) <= 1e-19))
		tmp = (z * (t * -4.5)) / a;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(x / a), $MachinePrecision] * N[(y / 2.0), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(x * y), $MachinePrecision], -1e+82], t$95$1, If[LessEqual[N[(x * y), $MachinePrecision], -2e-40], N[(-4.5 * N[(N[(z * t), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision], If[And[N[Not[LessEqual[N[(x * y), $MachinePrecision], -5e-70]], $MachinePrecision], LessEqual[N[(x * y), $MachinePrecision], 1e-19]], N[(N[(z * N[(t * -4.5), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision], t$95$1]]]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
t_1 := \frac{x}{a} \cdot \frac{y}{2}\\
\mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;x \cdot y \leq -2 \cdot 10^{-40}:\\
\;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\

\mathbf{elif}\;\neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}:\\
\;\;\;\;\frac{z \cdot \left(t \cdot -4.5\right)}{a}\\

\mathbf{else}:\\
\;\;\;\;t\_1\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 x y) < -9.9999999999999996e81 or -1.9999999999999999e-40 < (*.f64 x y) < -4.9999999999999998e-70 or 9.9999999999999998e-20 < (*.f64 x y)

    1. Initial program 83.6%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. fma-neg84.4%

        \[\leadsto \frac{\color{blue}{\mathsf{fma}\left(x, y, -\left(z \cdot 9\right) \cdot t\right)}}{a \cdot 2} \]
      2. distribute-lft-neg-in84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-z \cdot 9\right) \cdot t}\right)}{a \cdot 2} \]
      3. distribute-rgt-neg-in84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(z \cdot \left(-9\right)\right)} \cdot t\right)}{a \cdot 2} \]
      4. metadata-eval84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \left(z \cdot \color{blue}{-9}\right) \cdot t\right)}{a \cdot 2} \]
      5. associate-*r*84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, \color{blue}{z \cdot \left(-9 \cdot t\right)}\right)}{a \cdot 2} \]
      6. *-commutative84.4%

        \[\leadsto \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(t \cdot -9\right)}\right)}{a \cdot 2} \]
      7. *-un-lft-identity84.4%

        \[\leadsto \frac{\color{blue}{1 \cdot \mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}}{a \cdot 2} \]
      8. add-sqr-sqrt40.7%

        \[\leadsto \frac{1 \cdot \mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\color{blue}{\sqrt{a \cdot 2} \cdot \sqrt{a \cdot 2}}} \]
      9. times-frac40.8%

        \[\leadsto \color{blue}{\frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\sqrt{a \cdot 2}}} \]
      10. *-commutative40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(-9 \cdot t\right)}\right)}{\sqrt{a \cdot 2}} \]
      11. associate-*r*40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(z \cdot -9\right) \cdot t}\right)}{\sqrt{a \cdot 2}} \]
      12. metadata-eval40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \left(z \cdot \color{blue}{\left(-9\right)}\right) \cdot t\right)}{\sqrt{a \cdot 2}} \]
      13. distribute-rgt-neg-in40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-z \cdot 9\right)} \cdot t\right)}{\sqrt{a \cdot 2}} \]
      14. *-commutative40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, \color{blue}{t \cdot \left(-z \cdot 9\right)}\right)}{\sqrt{a \cdot 2}} \]
      15. distribute-rgt-neg-in40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \color{blue}{\left(z \cdot \left(-9\right)\right)}\right)}{\sqrt{a \cdot 2}} \]
      16. metadata-eval40.8%

        \[\leadsto \frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot \color{blue}{-9}\right)\right)}{\sqrt{a \cdot 2}} \]
    4. Applied egg-rr40.8%

      \[\leadsto \color{blue}{\frac{1}{\sqrt{a \cdot 2}} \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}} \]
    5. Step-by-step derivation
      1. associate-*l/40.8%

        \[\leadsto \color{blue}{\frac{1 \cdot \frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}}} \]
      2. *-lft-identity40.8%

        \[\leadsto \frac{\color{blue}{\frac{\mathsf{fma}\left(x, y, t \cdot \left(z \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}}{\sqrt{a \cdot 2}} \]
      3. associate-*r*40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(t \cdot z\right) \cdot -9}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      4. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9 \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      5. metadata-eval40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9\right)} \cdot \left(t \cdot z\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      6. distribute-lft-neg-in40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9 \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      7. distribute-lft-neg-in40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9\right) \cdot \left(t \cdot z\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      8. metadata-eval40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{-9} \cdot \left(t \cdot z\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      9. associate-*r*40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{\left(-9 \cdot t\right) \cdot z}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      10. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, \color{blue}{z \cdot \left(-9 \cdot t\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
      11. *-commutative40.8%

        \[\leadsto \frac{\frac{\mathsf{fma}\left(x, y, z \cdot \color{blue}{\left(t \cdot -9\right)}\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}} \]
    6. Simplified40.8%

      \[\leadsto \color{blue}{\frac{\frac{\mathsf{fma}\left(x, y, z \cdot \left(t \cdot -9\right)\right)}{\sqrt{a \cdot 2}}}{\sqrt{a \cdot 2}}} \]
    7. Taylor expanded in x around inf 69.8%

      \[\leadsto \color{blue}{\frac{x \cdot y}{a \cdot {\left(\sqrt{2}\right)}^{2}}} \]
    8. Step-by-step derivation
      1. times-frac74.7%

        \[\leadsto \color{blue}{\frac{x}{a} \cdot \frac{y}{{\left(\sqrt{2}\right)}^{2}}} \]
      2. unpow274.7%

        \[\leadsto \frac{x}{a} \cdot \frac{y}{\color{blue}{\sqrt{2} \cdot \sqrt{2}}} \]
      3. rem-square-sqrt75.4%

        \[\leadsto \frac{x}{a} \cdot \frac{y}{\color{blue}{2}} \]
    9. Simplified75.4%

      \[\leadsto \color{blue}{\frac{x}{a} \cdot \frac{y}{2}} \]

    if -9.9999999999999996e81 < (*.f64 x y) < -1.9999999999999999e-40

    1. Initial program 99.8%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 68.1%

      \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]

    if -4.9999999999999998e-70 < (*.f64 x y) < 9.9999999999999998e-20

    1. Initial program 97.0%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 81.9%

      \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]
    4. Step-by-step derivation
      1. associate-*r/81.9%

        \[\leadsto \color{blue}{\frac{-4.5 \cdot \left(t \cdot z\right)}{a}} \]
      2. associate-*r*81.1%

        \[\leadsto \frac{\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
      3. associate-*l/74.7%

        \[\leadsto \color{blue}{\frac{-4.5 \cdot t}{a} \cdot z} \]
      4. associate-*r/75.5%

        \[\leadsto \color{blue}{\left(-4.5 \cdot \frac{t}{a}\right)} \cdot z \]
      5. *-commutative75.5%

        \[\leadsto \color{blue}{z \cdot \left(-4.5 \cdot \frac{t}{a}\right)} \]
      6. associate-*r/74.7%

        \[\leadsto z \cdot \color{blue}{\frac{-4.5 \cdot t}{a}} \]
    5. Simplified74.7%

      \[\leadsto \color{blue}{z \cdot \frac{-4.5 \cdot t}{a}} \]
    6. Step-by-step derivation
      1. associate-*r/81.1%

        \[\leadsto \color{blue}{\frac{z \cdot \left(-4.5 \cdot t\right)}{a}} \]
      2. *-commutative81.1%

        \[\leadsto \frac{z \cdot \color{blue}{\left(t \cdot -4.5\right)}}{a} \]
    7. Applied egg-rr81.1%

      \[\leadsto \color{blue}{\frac{z \cdot \left(t \cdot -4.5\right)}{a}} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification77.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+82}:\\ \;\;\;\;\frac{x}{a} \cdot \frac{y}{2}\\ \mathbf{elif}\;x \cdot y \leq -2 \cdot 10^{-40}:\\ \;\;\;\;-4.5 \cdot \frac{z \cdot t}{a}\\ \mathbf{elif}\;\neg \left(x \cdot y \leq -5 \cdot 10^{-70}\right) \land x \cdot y \leq 10^{-19}:\\ \;\;\;\;\frac{z \cdot \left(t \cdot -4.5\right)}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{x}{a} \cdot \frac{y}{2}\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 94.9% accurate, 0.5× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+302} \lor \neg \left(x \cdot y \leq 5 \cdot 10^{+276}\right):\\ \;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (if (or (<= (* x y) -1e+302) (not (<= (* x y) 5e+276)))
   (* x (/ (* y 0.5) a))
   (/ (- (* x y) (* (* z 9.0) t)) (* a 2.0))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (((x * y) <= -1e+302) || !((x * y) <= 5e+276)) {
		tmp = x * ((y * 0.5) / a);
	} else {
		tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: tmp
    if (((x * y) <= (-1d+302)) .or. (.not. ((x * y) <= 5d+276))) then
        tmp = x * ((y * 0.5d0) / a)
    else
        tmp = ((x * y) - ((z * 9.0d0) * t)) / (a * 2.0d0)
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (((x * y) <= -1e+302) || !((x * y) <= 5e+276)) {
		tmp = x * ((y * 0.5) / a);
	} else {
		tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	tmp = 0
	if ((x * y) <= -1e+302) or not ((x * y) <= 5e+276):
		tmp = x * ((y * 0.5) / a)
	else:
		tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0)
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	tmp = 0.0
	if ((Float64(x * y) <= -1e+302) || !(Float64(x * y) <= 5e+276))
		tmp = Float64(x * Float64(Float64(y * 0.5) / a));
	else
		tmp = Float64(Float64(Float64(x * y) - Float64(Float64(z * 9.0) * t)) / Float64(a * 2.0));
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	tmp = 0.0;
	if (((x * y) <= -1e+302) || ~(((x * y) <= 5e+276)))
		tmp = x * ((y * 0.5) / a);
	else
		tmp = ((x * y) - ((z * 9.0) * t)) / (a * 2.0);
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := If[Or[LessEqual[N[(x * y), $MachinePrecision], -1e+302], N[Not[LessEqual[N[(x * y), $MachinePrecision], 5e+276]], $MachinePrecision]], N[(x * N[(N[(y * 0.5), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision], N[(N[(N[(x * y), $MachinePrecision] - N[(N[(z * 9.0), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
\mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+302} \lor \neg \left(x \cdot y \leq 5 \cdot 10^{+276}\right):\\
\;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\

\mathbf{else}:\\
\;\;\;\;\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 x y) < -1.0000000000000001e302 or 5.00000000000000001e276 < (*.f64 x y)

    1. Initial program 57.4%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 62.6%

      \[\leadsto \color{blue}{0.5 \cdot \frac{x \cdot y}{a}} \]
    4. Step-by-step derivation
      1. *-commutative62.6%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a} \cdot 0.5} \]
      2. associate-/l*92.6%

        \[\leadsto \color{blue}{\left(x \cdot \frac{y}{a}\right)} \cdot 0.5 \]
      3. associate-*r*92.6%

        \[\leadsto \color{blue}{x \cdot \left(\frac{y}{a} \cdot 0.5\right)} \]
      4. *-commutative92.6%

        \[\leadsto x \cdot \color{blue}{\left(0.5 \cdot \frac{y}{a}\right)} \]
      5. associate-*r/92.6%

        \[\leadsto x \cdot \color{blue}{\frac{0.5 \cdot y}{a}} \]
    5. Simplified92.6%

      \[\leadsto \color{blue}{x \cdot \frac{0.5 \cdot y}{a}} \]

    if -1.0000000000000001e302 < (*.f64 x y) < 5.00000000000000001e276

    1. Initial program 96.6%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
  3. Recombined 2 regimes into one program.
  4. Final simplification96.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \cdot y \leq -1 \cdot 10^{+302} \lor \neg \left(x \cdot y \leq 5 \cdot 10^{+276}\right):\\ \;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2}\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 66.6% accurate, 0.8× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ \begin{array}{l} \mathbf{if}\;y \leq -2.25 \cdot 10^{-13} \lor \neg \left(y \leq 5.4 \cdot 10^{-13}\right):\\ \;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\ \mathbf{else}:\\ \;\;\;\;-4.5 \cdot \frac{z}{\frac{a}{t}}\\ \end{array} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a)
 :precision binary64
 (if (or (<= y -2.25e-13) (not (<= y 5.4e-13)))
   (* x (/ (* y 0.5) a))
   (* -4.5 (/ z (/ a t)))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if ((y <= -2.25e-13) || !(y <= 5.4e-13)) {
		tmp = x * ((y * 0.5) / a);
	} else {
		tmp = -4.5 * (z / (a / t));
	}
	return tmp;
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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) :: tmp
    if ((y <= (-2.25d-13)) .or. (.not. (y <= 5.4d-13))) then
        tmp = x * ((y * 0.5d0) / a)
    else
        tmp = (-4.5d0) * (z / (a / t))
    end if
    code = tmp
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	double tmp;
	if ((y <= -2.25e-13) || !(y <= 5.4e-13)) {
		tmp = x * ((y * 0.5) / a);
	} else {
		tmp = -4.5 * (z / (a / t));
	}
	return tmp;
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	tmp = 0
	if (y <= -2.25e-13) or not (y <= 5.4e-13):
		tmp = x * ((y * 0.5) / a)
	else:
		tmp = -4.5 * (z / (a / t))
	return tmp
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	tmp = 0.0
	if ((y <= -2.25e-13) || !(y <= 5.4e-13))
		tmp = Float64(x * Float64(Float64(y * 0.5) / a));
	else
		tmp = Float64(-4.5 * Float64(z / Float64(a / t)));
	end
	return tmp
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp_2 = code(x, y, z, t, a)
	tmp = 0.0;
	if ((y <= -2.25e-13) || ~((y <= 5.4e-13)))
		tmp = x * ((y * 0.5) / a);
	else
		tmp = -4.5 * (z / (a / t));
	end
	tmp_2 = tmp;
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := If[Or[LessEqual[y, -2.25e-13], N[Not[LessEqual[y, 5.4e-13]], $MachinePrecision]], N[(x * N[(N[(y * 0.5), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision], N[(-4.5 * N[(z / N[(a / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.25 \cdot 10^{-13} \lor \neg \left(y \leq 5.4 \cdot 10^{-13}\right):\\
\;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\

\mathbf{else}:\\
\;\;\;\;-4.5 \cdot \frac{z}{\frac{a}{t}}\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -2.25e-13 or 5.40000000000000021e-13 < y

    1. Initial program 86.0%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around inf 60.3%

      \[\leadsto \color{blue}{0.5 \cdot \frac{x \cdot y}{a}} \]
    4. Step-by-step derivation
      1. *-commutative60.3%

        \[\leadsto \color{blue}{\frac{x \cdot y}{a} \cdot 0.5} \]
      2. associate-/l*71.9%

        \[\leadsto \color{blue}{\left(x \cdot \frac{y}{a}\right)} \cdot 0.5 \]
      3. associate-*r*71.9%

        \[\leadsto \color{blue}{x \cdot \left(\frac{y}{a} \cdot 0.5\right)} \]
      4. *-commutative71.9%

        \[\leadsto x \cdot \color{blue}{\left(0.5 \cdot \frac{y}{a}\right)} \]
      5. associate-*r/71.9%

        \[\leadsto x \cdot \color{blue}{\frac{0.5 \cdot y}{a}} \]
    5. Simplified71.9%

      \[\leadsto \color{blue}{x \cdot \frac{0.5 \cdot y}{a}} \]

    if -2.25e-13 < y < 5.40000000000000021e-13

    1. Initial program 96.4%

      \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
    2. Add Preprocessing
    3. Taylor expanded in x around 0 72.7%

      \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]
    4. Step-by-step derivation
      1. associate-*r/72.7%

        \[\leadsto \color{blue}{\frac{-4.5 \cdot \left(t \cdot z\right)}{a}} \]
      2. associate-*r*71.9%

        \[\leadsto \frac{\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
      3. associate-*l/66.8%

        \[\leadsto \color{blue}{\frac{-4.5 \cdot t}{a} \cdot z} \]
      4. associate-*r/67.5%

        \[\leadsto \color{blue}{\left(-4.5 \cdot \frac{t}{a}\right)} \cdot z \]
      5. *-commutative67.5%

        \[\leadsto \color{blue}{z \cdot \left(-4.5 \cdot \frac{t}{a}\right)} \]
      6. associate-*r/66.8%

        \[\leadsto z \cdot \color{blue}{\frac{-4.5 \cdot t}{a}} \]
    5. Simplified66.8%

      \[\leadsto \color{blue}{z \cdot \frac{-4.5 \cdot t}{a}} \]
    6. Step-by-step derivation
      1. clear-num66.4%

        \[\leadsto z \cdot \color{blue}{\frac{1}{\frac{a}{-4.5 \cdot t}}} \]
      2. un-div-inv67.0%

        \[\leadsto \color{blue}{\frac{z}{\frac{a}{-4.5 \cdot t}}} \]
      3. *-un-lft-identity67.0%

        \[\leadsto \frac{z}{\frac{\color{blue}{1 \cdot a}}{-4.5 \cdot t}} \]
      4. times-frac67.8%

        \[\leadsto \frac{z}{\color{blue}{\frac{1}{-4.5} \cdot \frac{a}{t}}} \]
      5. metadata-eval67.8%

        \[\leadsto \frac{z}{\color{blue}{-0.2222222222222222} \cdot \frac{a}{t}} \]
    7. Applied egg-rr67.8%

      \[\leadsto \color{blue}{\frac{z}{-0.2222222222222222 \cdot \frac{a}{t}}} \]
    8. Step-by-step derivation
      1. *-lft-identity67.8%

        \[\leadsto \frac{\color{blue}{1 \cdot z}}{-0.2222222222222222 \cdot \frac{a}{t}} \]
      2. times-frac67.8%

        \[\leadsto \color{blue}{\frac{1}{-0.2222222222222222} \cdot \frac{z}{\frac{a}{t}}} \]
      3. metadata-eval67.8%

        \[\leadsto \color{blue}{-4.5} \cdot \frac{z}{\frac{a}{t}} \]
    9. Simplified67.8%

      \[\leadsto \color{blue}{-4.5 \cdot \frac{z}{\frac{a}{t}}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification70.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.25 \cdot 10^{-13} \lor \neg \left(y \leq 5.4 \cdot 10^{-13}\right):\\ \;\;\;\;x \cdot \frac{y \cdot 0.5}{a}\\ \mathbf{else}:\\ \;\;\;\;-4.5 \cdot \frac{z}{\frac{a}{t}}\\ \end{array} \]
  5. Add Preprocessing

Alternative 8: 51.6% accurate, 1.9× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ -4.5 \cdot \left(t \cdot \frac{z}{a}\right) \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a) :precision binary64 (* -4.5 (* t (/ z a))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	return -4.5 * (t * (z / a));
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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
    code = (-4.5d0) * (t * (z / a))
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	return -4.5 * (t * (z / a));
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	return -4.5 * (t * (z / a))
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	return Float64(-4.5 * Float64(t * Float64(z / a)))
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp = code(x, y, z, t, a)
	tmp = -4.5 * (t * (z / a));
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := N[(-4.5 * N[(t * N[(z / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
-4.5 \cdot \left(t \cdot \frac{z}{a}\right)
\end{array}
Derivation
  1. Initial program 90.8%

    \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
  2. Add Preprocessing
  3. Taylor expanded in x around 0 51.9%

    \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]
  4. Step-by-step derivation
    1. associate-/l*52.6%

      \[\leadsto -4.5 \cdot \color{blue}{\left(t \cdot \frac{z}{a}\right)} \]
  5. Simplified52.6%

    \[\leadsto \color{blue}{-4.5 \cdot \left(t \cdot \frac{z}{a}\right)} \]
  6. Final simplification52.6%

    \[\leadsto -4.5 \cdot \left(t \cdot \frac{z}{a}\right) \]
  7. Add Preprocessing

Alternative 9: 51.7% accurate, 1.9× speedup?

\[\begin{array}{l} [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\ [x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\ \\ -4.5 \cdot \frac{z}{\frac{a}{t}} \end{array} \]
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
(FPCore (x y z t a) :precision binary64 (* -4.5 (/ z (/ a t))))
assert(x < y && y < z && z < t && t < a);
assert(x < y && y < z && z < t && t < a);
double code(double x, double y, double z, double t, double a) {
	return -4.5 * (z / (a / t));
}
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
real(8) function code(x, y, z, t, a)
    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
    code = (-4.5d0) * (z / (a / t))
end function
assert x < y && y < z && z < t && t < a;
assert x < y && y < z && z < t && t < a;
public static double code(double x, double y, double z, double t, double a) {
	return -4.5 * (z / (a / t));
}
[x, y, z, t, a] = sort([x, y, z, t, a])
[x, y, z, t, a] = sort([x, y, z, t, a])
def code(x, y, z, t, a):
	return -4.5 * (z / (a / t))
x, y, z, t, a = sort([x, y, z, t, a])
x, y, z, t, a = sort([x, y, z, t, a])
function code(x, y, z, t, a)
	return Float64(-4.5 * Float64(z / Float64(a / t)))
end
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
x, y, z, t, a = num2cell(sort([x, y, z, t, a])){:}
function tmp = code(x, y, z, t, a)
	tmp = -4.5 * (z / (a / t));
end
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
NOTE: x, y, z, t, and a should be sorted in increasing order before calling this function.
code[x_, y_, z_, t_, a_] := N[(-4.5 * N[(z / N[(a / t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\\\
[x, y, z, t, a] = \mathsf{sort}([x, y, z, t, a])\\
\\
-4.5 \cdot \frac{z}{\frac{a}{t}}
\end{array}
Derivation
  1. Initial program 90.8%

    \[\frac{x \cdot y - \left(z \cdot 9\right) \cdot t}{a \cdot 2} \]
  2. Add Preprocessing
  3. Taylor expanded in x around 0 51.9%

    \[\leadsto \color{blue}{-4.5 \cdot \frac{t \cdot z}{a}} \]
  4. Step-by-step derivation
    1. associate-*r/51.9%

      \[\leadsto \color{blue}{\frac{-4.5 \cdot \left(t \cdot z\right)}{a}} \]
    2. associate-*r*51.6%

      \[\leadsto \frac{\color{blue}{\left(-4.5 \cdot t\right) \cdot z}}{a} \]
    3. associate-*l/50.3%

      \[\leadsto \color{blue}{\frac{-4.5 \cdot t}{a} \cdot z} \]
    4. associate-*r/50.7%

      \[\leadsto \color{blue}{\left(-4.5 \cdot \frac{t}{a}\right)} \cdot z \]
    5. *-commutative50.7%

      \[\leadsto \color{blue}{z \cdot \left(-4.5 \cdot \frac{t}{a}\right)} \]
    6. associate-*r/50.3%

      \[\leadsto z \cdot \color{blue}{\frac{-4.5 \cdot t}{a}} \]
  5. Simplified50.3%

    \[\leadsto \color{blue}{z \cdot \frac{-4.5 \cdot t}{a}} \]
  6. Step-by-step derivation
    1. clear-num50.1%

      \[\leadsto z \cdot \color{blue}{\frac{1}{\frac{a}{-4.5 \cdot t}}} \]
    2. un-div-inv50.5%

      \[\leadsto \color{blue}{\frac{z}{\frac{a}{-4.5 \cdot t}}} \]
    3. *-un-lft-identity50.5%

      \[\leadsto \frac{z}{\frac{\color{blue}{1 \cdot a}}{-4.5 \cdot t}} \]
    4. times-frac50.8%

      \[\leadsto \frac{z}{\color{blue}{\frac{1}{-4.5} \cdot \frac{a}{t}}} \]
    5. metadata-eval50.8%

      \[\leadsto \frac{z}{\color{blue}{-0.2222222222222222} \cdot \frac{a}{t}} \]
  7. Applied egg-rr50.8%

    \[\leadsto \color{blue}{\frac{z}{-0.2222222222222222 \cdot \frac{a}{t}}} \]
  8. Step-by-step derivation
    1. *-lft-identity50.8%

      \[\leadsto \frac{\color{blue}{1 \cdot z}}{-0.2222222222222222 \cdot \frac{a}{t}} \]
    2. times-frac50.8%

      \[\leadsto \color{blue}{\frac{1}{-0.2222222222222222} \cdot \frac{z}{\frac{a}{t}}} \]
    3. metadata-eval50.8%

      \[\leadsto \color{blue}{-4.5} \cdot \frac{z}{\frac{a}{t}} \]
  9. Simplified50.8%

    \[\leadsto \color{blue}{-4.5 \cdot \frac{z}{\frac{a}{t}}} \]
  10. Final simplification50.8%

    \[\leadsto -4.5 \cdot \frac{z}{\frac{a}{t}} \]
  11. Add Preprocessing

Developer target: 93.3% accurate, 0.5× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;a < -2.090464557976709 \cdot 10^{+86}:\\ \;\;\;\;0.5 \cdot \frac{y \cdot x}{a} - 4.5 \cdot \frac{t}{\frac{a}{z}}\\ \mathbf{elif}\;a < 2.144030707833976 \cdot 10^{+99}:\\ \;\;\;\;\frac{x \cdot y - z \cdot \left(9 \cdot t\right)}{a \cdot 2}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{a} \cdot \left(x \cdot 0.5\right) - \frac{t}{a} \cdot \left(z \cdot 4.5\right)\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (if (< a -2.090464557976709e+86)
   (- (* 0.5 (/ (* y x) a)) (* 4.5 (/ t (/ a z))))
   (if (< a 2.144030707833976e+99)
     (/ (- (* x y) (* z (* 9.0 t))) (* a 2.0))
     (- (* (/ y a) (* x 0.5)) (* (/ t a) (* z 4.5))))))
double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (a < -2.090464557976709e+86) {
		tmp = (0.5 * ((y * x) / a)) - (4.5 * (t / (a / z)));
	} else if (a < 2.144030707833976e+99) {
		tmp = ((x * y) - (z * (9.0 * t))) / (a * 2.0);
	} else {
		tmp = ((y / a) * (x * 0.5)) - ((t / a) * (z * 4.5));
	}
	return tmp;
}
real(8) function code(x, y, z, t, a)
    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) :: tmp
    if (a < (-2.090464557976709d+86)) then
        tmp = (0.5d0 * ((y * x) / a)) - (4.5d0 * (t / (a / z)))
    else if (a < 2.144030707833976d+99) then
        tmp = ((x * y) - (z * (9.0d0 * t))) / (a * 2.0d0)
    else
        tmp = ((y / a) * (x * 0.5d0)) - ((t / a) * (z * 4.5d0))
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a) {
	double tmp;
	if (a < -2.090464557976709e+86) {
		tmp = (0.5 * ((y * x) / a)) - (4.5 * (t / (a / z)));
	} else if (a < 2.144030707833976e+99) {
		tmp = ((x * y) - (z * (9.0 * t))) / (a * 2.0);
	} else {
		tmp = ((y / a) * (x * 0.5)) - ((t / a) * (z * 4.5));
	}
	return tmp;
}
def code(x, y, z, t, a):
	tmp = 0
	if a < -2.090464557976709e+86:
		tmp = (0.5 * ((y * x) / a)) - (4.5 * (t / (a / z)))
	elif a < 2.144030707833976e+99:
		tmp = ((x * y) - (z * (9.0 * t))) / (a * 2.0)
	else:
		tmp = ((y / a) * (x * 0.5)) - ((t / a) * (z * 4.5))
	return tmp
function code(x, y, z, t, a)
	tmp = 0.0
	if (a < -2.090464557976709e+86)
		tmp = Float64(Float64(0.5 * Float64(Float64(y * x) / a)) - Float64(4.5 * Float64(t / Float64(a / z))));
	elseif (a < 2.144030707833976e+99)
		tmp = Float64(Float64(Float64(x * y) - Float64(z * Float64(9.0 * t))) / Float64(a * 2.0));
	else
		tmp = Float64(Float64(Float64(y / a) * Float64(x * 0.5)) - Float64(Float64(t / a) * Float64(z * 4.5)));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	tmp = 0.0;
	if (a < -2.090464557976709e+86)
		tmp = (0.5 * ((y * x) / a)) - (4.5 * (t / (a / z)));
	elseif (a < 2.144030707833976e+99)
		tmp = ((x * y) - (z * (9.0 * t))) / (a * 2.0);
	else
		tmp = ((y / a) * (x * 0.5)) - ((t / a) * (z * 4.5));
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := If[Less[a, -2.090464557976709e+86], N[(N[(0.5 * N[(N[(y * x), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision] - N[(4.5 * N[(t / N[(a / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Less[a, 2.144030707833976e+99], N[(N[(N[(x * y), $MachinePrecision] - N[(z * N[(9.0 * t), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(a * 2.0), $MachinePrecision]), $MachinePrecision], N[(N[(N[(y / a), $MachinePrecision] * N[(x * 0.5), $MachinePrecision]), $MachinePrecision] - N[(N[(t / a), $MachinePrecision] * N[(z * 4.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;a < -2.090464557976709 \cdot 10^{+86}:\\
\;\;\;\;0.5 \cdot \frac{y \cdot x}{a} - 4.5 \cdot \frac{t}{\frac{a}{z}}\\

\mathbf{elif}\;a < 2.144030707833976 \cdot 10^{+99}:\\
\;\;\;\;\frac{x \cdot y - z \cdot \left(9 \cdot t\right)}{a \cdot 2}\\

\mathbf{else}:\\
\;\;\;\;\frac{y}{a} \cdot \left(x \cdot 0.5\right) - \frac{t}{a} \cdot \left(z \cdot 4.5\right)\\


\end{array}
\end{array}

Reproduce

?
herbie shell --seed 2024078 
(FPCore (x y z t a)
  :name "Diagrams.Solve.Polynomial:cubForm  from diagrams-solve-0.1, I"
  :precision binary64

  :alt
  (if (< a -2.090464557976709e+86) (- (* 0.5 (/ (* y x) a)) (* 4.5 (/ t (/ a z)))) (if (< a 2.144030707833976e+99) (/ (- (* x y) (* z (* 9.0 t))) (* a 2.0)) (- (* (/ y a) (* x 0.5)) (* (/ t a) (* z 4.5)))))

  (/ (- (* x y) (* (* z 9.0) t)) (* a 2.0)))