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

Percentage Accurate: 100.0% → 100.0%
Time: 8.0s
Alternatives: 8
Speedup: 1.2×

Specification

?
\[\begin{array}{l} \\ \left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))
double code(double x, double y, double z, double t) {
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = (((1.0d0 / 8.0d0) * x) - ((y * z) / 2.0d0)) + t
end function
public static double code(double x, double y, double z, double t) {
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
def code(x, y, z, t):
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t
function code(x, y, z, t)
	return Float64(Float64(Float64(Float64(1.0 / 8.0) * x) - Float64(Float64(y * z) / 2.0)) + t)
end
function tmp = code(x, y, z, t)
	tmp = (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
end
code[x_, y_, z_, t_] := N[(N[(N[(N[(1.0 / 8.0), $MachinePrecision] * x), $MachinePrecision] - N[(N[(y * z), $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision] + t), $MachinePrecision]
\begin{array}{l}

\\
\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t
\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 8 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: 100.0% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))
double code(double x, double y, double z, double t) {
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = (((1.0d0 / 8.0d0) * x) - ((y * z) / 2.0d0)) + t
end function
public static double code(double x, double y, double z, double t) {
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
}
def code(x, y, z, t):
	return (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t
function code(x, y, z, t)
	return Float64(Float64(Float64(Float64(1.0 / 8.0) * x) - Float64(Float64(y * z) / 2.0)) + t)
end
function tmp = code(x, y, z, t)
	tmp = (((1.0 / 8.0) * x) - ((y * z) / 2.0)) + t;
end
code[x_, y_, z_, t_] := N[(N[(N[(N[(1.0 / 8.0), $MachinePrecision] * x), $MachinePrecision] - N[(N[(y * z), $MachinePrecision] / 2.0), $MachinePrecision]), $MachinePrecision] + t), $MachinePrecision]
\begin{array}{l}

\\
\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t
\end{array}

Alternative 1: 100.0% accurate, 0.1× speedup?

\[\begin{array}{l} \\ \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, z \cdot -0.5, t\right)\right) \end{array} \]
(FPCore (x y z t) :precision binary64 (fma 0.125 x (fma y (* z -0.5) t)))
double code(double x, double y, double z, double t) {
	return fma(0.125, x, fma(y, (z * -0.5), t));
}
function code(x, y, z, t)
	return fma(0.125, x, fma(y, Float64(z * -0.5), t))
end
code[x_, y_, z_, t_] := N[(0.125 * x + N[(y * N[(z * -0.5), $MachinePrecision] + t), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, z \cdot -0.5, t\right)\right)
\end{array}
Derivation
  1. Initial program 100.0%

    \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
  2. Step-by-step derivation
    1. associate-+l-100.0%

      \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
    2. fma-neg100.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{1}{8}, x, -\left(\frac{y \cdot z}{2} - t\right)\right)} \]
    3. metadata-eval100.0%

      \[\leadsto \mathsf{fma}\left(\color{blue}{0.125}, x, -\left(\frac{y \cdot z}{2} - t\right)\right) \]
    4. sub-neg100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, -\color{blue}{\left(\frac{y \cdot z}{2} + \left(-t\right)\right)}\right) \]
    5. distribute-neg-in100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \color{blue}{\left(-\frac{y \cdot z}{2}\right) + \left(-\left(-t\right)\right)}\right) \]
    6. distribute-frac-neg100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \color{blue}{\frac{-y \cdot z}{2}} + \left(-\left(-t\right)\right)\right) \]
    7. distribute-rgt-neg-out100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \frac{\color{blue}{y \cdot \left(-z\right)}}{2} + \left(-\left(-t\right)\right)\right) \]
    8. remove-double-neg100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \frac{y \cdot \left(-z\right)}{2} + \color{blue}{t}\right) \]
    9. associate-/l*100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \color{blue}{y \cdot \frac{-z}{2}} + t\right) \]
    10. fma-define100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \color{blue}{\mathsf{fma}\left(y, \frac{-z}{2}, t\right)}\right) \]
    11. neg-mul-1100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, \frac{\color{blue}{-1 \cdot z}}{2}, t\right)\right) \]
    12. *-commutative100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, \frac{\color{blue}{z \cdot -1}}{2}, t\right)\right) \]
    13. associate-/l*100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, \color{blue}{z \cdot \frac{-1}{2}}, t\right)\right) \]
    14. metadata-eval100.0%

      \[\leadsto \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, z \cdot \color{blue}{-0.5}, t\right)\right) \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{\mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, z \cdot -0.5, t\right)\right)} \]
  4. Add Preprocessing
  5. Final simplification100.0%

    \[\leadsto \mathsf{fma}\left(0.125, x, \mathsf{fma}\left(y, z \cdot -0.5, t\right)\right) \]
  6. Add Preprocessing

Alternative 2: 50.9% accurate, 0.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := z \cdot \left(y \cdot -0.5\right)\\ \mathbf{if}\;x \leq -1.05 \cdot 10^{+43}:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{elif}\;x \leq -2.85 \cdot 10^{-31}:\\ \;\;\;\;t\\ \mathbf{elif}\;x \leq -2.75 \cdot 10^{-111}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;x \leq -2.7 \cdot 10^{-250}:\\ \;\;\;\;t\\ \mathbf{elif}\;x \leq 0.038:\\ \;\;\;\;t\_1\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* z (* y -0.5))))
   (if (<= x -1.05e+43)
     (* 0.125 x)
     (if (<= x -2.85e-31)
       t
       (if (<= x -2.75e-111)
         t_1
         (if (<= x -2.7e-250) t (if (<= x 0.038) t_1 (* 0.125 x))))))))
double code(double x, double y, double z, double t) {
	double t_1 = z * (y * -0.5);
	double tmp;
	if (x <= -1.05e+43) {
		tmp = 0.125 * x;
	} else if (x <= -2.85e-31) {
		tmp = t;
	} else if (x <= -2.75e-111) {
		tmp = t_1;
	} else if (x <= -2.7e-250) {
		tmp = t;
	} else if (x <= 0.038) {
		tmp = t_1;
	} else {
		tmp = 0.125 * x;
	}
	return tmp;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = z * (y * (-0.5d0))
    if (x <= (-1.05d+43)) then
        tmp = 0.125d0 * x
    else if (x <= (-2.85d-31)) then
        tmp = t
    else if (x <= (-2.75d-111)) then
        tmp = t_1
    else if (x <= (-2.7d-250)) then
        tmp = t
    else if (x <= 0.038d0) then
        tmp = t_1
    else
        tmp = 0.125d0 * x
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double t_1 = z * (y * -0.5);
	double tmp;
	if (x <= -1.05e+43) {
		tmp = 0.125 * x;
	} else if (x <= -2.85e-31) {
		tmp = t;
	} else if (x <= -2.75e-111) {
		tmp = t_1;
	} else if (x <= -2.7e-250) {
		tmp = t;
	} else if (x <= 0.038) {
		tmp = t_1;
	} else {
		tmp = 0.125 * x;
	}
	return tmp;
}
def code(x, y, z, t):
	t_1 = z * (y * -0.5)
	tmp = 0
	if x <= -1.05e+43:
		tmp = 0.125 * x
	elif x <= -2.85e-31:
		tmp = t
	elif x <= -2.75e-111:
		tmp = t_1
	elif x <= -2.7e-250:
		tmp = t
	elif x <= 0.038:
		tmp = t_1
	else:
		tmp = 0.125 * x
	return tmp
function code(x, y, z, t)
	t_1 = Float64(z * Float64(y * -0.5))
	tmp = 0.0
	if (x <= -1.05e+43)
		tmp = Float64(0.125 * x);
	elseif (x <= -2.85e-31)
		tmp = t;
	elseif (x <= -2.75e-111)
		tmp = t_1;
	elseif (x <= -2.7e-250)
		tmp = t;
	elseif (x <= 0.038)
		tmp = t_1;
	else
		tmp = Float64(0.125 * x);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	t_1 = z * (y * -0.5);
	tmp = 0.0;
	if (x <= -1.05e+43)
		tmp = 0.125 * x;
	elseif (x <= -2.85e-31)
		tmp = t;
	elseif (x <= -2.75e-111)
		tmp = t_1;
	elseif (x <= -2.7e-250)
		tmp = t;
	elseif (x <= 0.038)
		tmp = t_1;
	else
		tmp = 0.125 * x;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(z * N[(y * -0.5), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[x, -1.05e+43], N[(0.125 * x), $MachinePrecision], If[LessEqual[x, -2.85e-31], t, If[LessEqual[x, -2.75e-111], t$95$1, If[LessEqual[x, -2.7e-250], t, If[LessEqual[x, 0.038], t$95$1, N[(0.125 * x), $MachinePrecision]]]]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := z \cdot \left(y \cdot -0.5\right)\\
\mathbf{if}\;x \leq -1.05 \cdot 10^{+43}:\\
\;\;\;\;0.125 \cdot x\\

\mathbf{elif}\;x \leq -2.85 \cdot 10^{-31}:\\
\;\;\;\;t\\

\mathbf{elif}\;x \leq -2.75 \cdot 10^{-111}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;x \leq -2.7 \cdot 10^{-250}:\\
\;\;\;\;t\\

\mathbf{elif}\;x \leq 0.038:\\
\;\;\;\;t\_1\\

\mathbf{else}:\\
\;\;\;\;0.125 \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if x < -1.05000000000000001e43 or 0.0379999999999999991 < x

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 64.5%

      \[\leadsto \color{blue}{0.125 \cdot x} \]

    if -1.05000000000000001e43 < x < -2.84999999999999997e-31 or -2.7499999999999999e-111 < x < -2.70000000000000002e-250

    1. Initial program 99.9%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-99.9%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative99.9%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-99.9%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval99.9%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative99.9%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*99.9%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified99.9%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in t around inf 66.5%

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

    if -2.84999999999999997e-31 < x < -2.7499999999999999e-111 or -2.70000000000000002e-250 < x < 0.0379999999999999991

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 60.3%

      \[\leadsto \color{blue}{-0.5 \cdot \left(y \cdot z\right)} \]
    6. Step-by-step derivation
      1. *-commutative60.3%

        \[\leadsto \color{blue}{\left(y \cdot z\right) \cdot -0.5} \]
      2. *-commutative60.3%

        \[\leadsto \color{blue}{\left(z \cdot y\right)} \cdot -0.5 \]
      3. associate-*r*60.3%

        \[\leadsto \color{blue}{z \cdot \left(y \cdot -0.5\right)} \]
    7. Simplified60.3%

      \[\leadsto \color{blue}{z \cdot \left(y \cdot -0.5\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification63.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -1.05 \cdot 10^{+43}:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{elif}\;x \leq -2.85 \cdot 10^{-31}:\\ \;\;\;\;t\\ \mathbf{elif}\;x \leq -2.75 \cdot 10^{-111}:\\ \;\;\;\;z \cdot \left(y \cdot -0.5\right)\\ \mathbf{elif}\;x \leq -2.7 \cdot 10^{-250}:\\ \;\;\;\;t\\ \mathbf{elif}\;x \leq 0.038:\\ \;\;\;\;z \cdot \left(y \cdot -0.5\right)\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 88.0% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \cdot z \leq -2 \cdot 10^{+39} \lor \neg \left(y \cdot z \leq 5 \cdot 10^{+24}\right):\\ \;\;\;\;t - 0.5 \cdot \left(y \cdot z\right)\\ \mathbf{else}:\\ \;\;\;\;t + 0.125 \cdot x\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (or (<= (* y z) -2e+39) (not (<= (* y z) 5e+24)))
   (- t (* 0.5 (* y z)))
   (+ t (* 0.125 x))))
double code(double x, double y, double z, double t) {
	double tmp;
	if (((y * z) <= -2e+39) || !((y * z) <= 5e+24)) {
		tmp = t - (0.5 * (y * z));
	} else {
		tmp = t + (0.125 * x);
	}
	return tmp;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if (((y * z) <= (-2d+39)) .or. (.not. ((y * z) <= 5d+24))) then
        tmp = t - (0.5d0 * (y * z))
    else
        tmp = t + (0.125d0 * x)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double tmp;
	if (((y * z) <= -2e+39) || !((y * z) <= 5e+24)) {
		tmp = t - (0.5 * (y * z));
	} else {
		tmp = t + (0.125 * x);
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if ((y * z) <= -2e+39) or not ((y * z) <= 5e+24):
		tmp = t - (0.5 * (y * z))
	else:
		tmp = t + (0.125 * x)
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if ((Float64(y * z) <= -2e+39) || !(Float64(y * z) <= 5e+24))
		tmp = Float64(t - Float64(0.5 * Float64(y * z)));
	else
		tmp = Float64(t + Float64(0.125 * x));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (((y * z) <= -2e+39) || ~(((y * z) <= 5e+24)))
		tmp = t - (0.5 * (y * z));
	else
		tmp = t + (0.125 * x);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(y * z), $MachinePrecision], -2e+39], N[Not[LessEqual[N[(y * z), $MachinePrecision], 5e+24]], $MachinePrecision]], N[(t - N[(0.5 * N[(y * z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(t + N[(0.125 * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \cdot z \leq -2 \cdot 10^{+39} \lor \neg \left(y \cdot z \leq 5 \cdot 10^{+24}\right):\\
\;\;\;\;t - 0.5 \cdot \left(y \cdot z\right)\\

\mathbf{else}:\\
\;\;\;\;t + 0.125 \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 y z) < -1.99999999999999988e39 or 5.00000000000000045e24 < (*.f64 y z)

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 83.9%

      \[\leadsto \color{blue}{t - 0.5 \cdot \left(y \cdot z\right)} \]

    if -1.99999999999999988e39 < (*.f64 y z) < 5.00000000000000045e24

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 91.3%

      \[\leadsto \color{blue}{t + 0.125 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification88.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \cdot z \leq -2 \cdot 10^{+39} \lor \neg \left(y \cdot z \leq 5 \cdot 10^{+24}\right):\\ \;\;\;\;t - 0.5 \cdot \left(y \cdot z\right)\\ \mathbf{else}:\\ \;\;\;\;t + 0.125 \cdot x\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 85.9% accurate, 0.7× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := 0.5 \cdot \left(y \cdot z\right)\\ \mathbf{if}\;x \leq -3.1 \cdot 10^{+43} \lor \neg \left(x \leq 5.2 \cdot 10^{+58}\right):\\ \;\;\;\;0.125 \cdot x - t\_1\\ \mathbf{else}:\\ \;\;\;\;t - t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* 0.5 (* y z))))
   (if (or (<= x -3.1e+43) (not (<= x 5.2e+58)))
     (- (* 0.125 x) t_1)
     (- t t_1))))
double code(double x, double y, double z, double t) {
	double t_1 = 0.5 * (y * z);
	double tmp;
	if ((x <= -3.1e+43) || !(x <= 5.2e+58)) {
		tmp = (0.125 * x) - t_1;
	} else {
		tmp = t - t_1;
	}
	return tmp;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: t_1
    real(8) :: tmp
    t_1 = 0.5d0 * (y * z)
    if ((x <= (-3.1d+43)) .or. (.not. (x <= 5.2d+58))) then
        tmp = (0.125d0 * x) - t_1
    else
        tmp = t - t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double t_1 = 0.5 * (y * z);
	double tmp;
	if ((x <= -3.1e+43) || !(x <= 5.2e+58)) {
		tmp = (0.125 * x) - t_1;
	} else {
		tmp = t - t_1;
	}
	return tmp;
}
def code(x, y, z, t):
	t_1 = 0.5 * (y * z)
	tmp = 0
	if (x <= -3.1e+43) or not (x <= 5.2e+58):
		tmp = (0.125 * x) - t_1
	else:
		tmp = t - t_1
	return tmp
function code(x, y, z, t)
	t_1 = Float64(0.5 * Float64(y * z))
	tmp = 0.0
	if ((x <= -3.1e+43) || !(x <= 5.2e+58))
		tmp = Float64(Float64(0.125 * x) - t_1);
	else
		tmp = Float64(t - t_1);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	t_1 = 0.5 * (y * z);
	tmp = 0.0;
	if ((x <= -3.1e+43) || ~((x <= 5.2e+58)))
		tmp = (0.125 * x) - t_1;
	else
		tmp = t - t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(0.5 * N[(y * z), $MachinePrecision]), $MachinePrecision]}, If[Or[LessEqual[x, -3.1e+43], N[Not[LessEqual[x, 5.2e+58]], $MachinePrecision]], N[(N[(0.125 * x), $MachinePrecision] - t$95$1), $MachinePrecision], N[(t - t$95$1), $MachinePrecision]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := 0.5 \cdot \left(y \cdot z\right)\\
\mathbf{if}\;x \leq -3.1 \cdot 10^{+43} \lor \neg \left(x \leq 5.2 \cdot 10^{+58}\right):\\
\;\;\;\;0.125 \cdot x - t\_1\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < -3.1000000000000002e43 or 5.19999999999999976e58 < x

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in t around 0 88.9%

      \[\leadsto \color{blue}{0.125 \cdot x - 0.5 \cdot \left(y \cdot z\right)} \]

    if -3.1000000000000002e43 < x < 5.19999999999999976e58

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in x around 0 92.7%

      \[\leadsto \color{blue}{t - 0.5 \cdot \left(y \cdot z\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification91.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -3.1 \cdot 10^{+43} \lor \neg \left(x \leq 5.2 \cdot 10^{+58}\right):\\ \;\;\;\;0.125 \cdot x - 0.5 \cdot \left(y \cdot z\right)\\ \mathbf{else}:\\ \;\;\;\;t - 0.5 \cdot \left(y \cdot z\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 71.5% accurate, 0.9× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq -2.1 \cdot 10^{-38} \lor \neg \left(z \leq 2.2 \cdot 10^{+178}\right):\\ \;\;\;\;z \cdot \left(y \cdot -0.5\right)\\ \mathbf{else}:\\ \;\;\;\;t + 0.125 \cdot x\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (or (<= z -2.1e-38) (not (<= z 2.2e+178)))
   (* z (* y -0.5))
   (+ t (* 0.125 x))))
double code(double x, double y, double z, double t) {
	double tmp;
	if ((z <= -2.1e-38) || !(z <= 2.2e+178)) {
		tmp = z * (y * -0.5);
	} else {
		tmp = t + (0.125 * x);
	}
	return tmp;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if ((z <= (-2.1d-38)) .or. (.not. (z <= 2.2d+178))) then
        tmp = z * (y * (-0.5d0))
    else
        tmp = t + (0.125d0 * x)
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double tmp;
	if ((z <= -2.1e-38) || !(z <= 2.2e+178)) {
		tmp = z * (y * -0.5);
	} else {
		tmp = t + (0.125 * x);
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if (z <= -2.1e-38) or not (z <= 2.2e+178):
		tmp = z * (y * -0.5)
	else:
		tmp = t + (0.125 * x)
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if ((z <= -2.1e-38) || !(z <= 2.2e+178))
		tmp = Float64(z * Float64(y * -0.5));
	else
		tmp = Float64(t + Float64(0.125 * x));
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if ((z <= -2.1e-38) || ~((z <= 2.2e+178)))
		tmp = z * (y * -0.5);
	else
		tmp = t + (0.125 * x);
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[Or[LessEqual[z, -2.1e-38], N[Not[LessEqual[z, 2.2e+178]], $MachinePrecision]], N[(z * N[(y * -0.5), $MachinePrecision]), $MachinePrecision], N[(t + N[(0.125 * x), $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;z \leq -2.1 \cdot 10^{-38} \lor \neg \left(z \leq 2.2 \cdot 10^{+178}\right):\\
\;\;\;\;z \cdot \left(y \cdot -0.5\right)\\

\mathbf{else}:\\
\;\;\;\;t + 0.125 \cdot x\\


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if z < -2.10000000000000013e-38 or 2.19999999999999997e178 < z

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in y around inf 62.4%

      \[\leadsto \color{blue}{-0.5 \cdot \left(y \cdot z\right)} \]
    6. Step-by-step derivation
      1. *-commutative62.4%

        \[\leadsto \color{blue}{\left(y \cdot z\right) \cdot -0.5} \]
      2. *-commutative62.4%

        \[\leadsto \color{blue}{\left(z \cdot y\right)} \cdot -0.5 \]
      3. associate-*r*62.4%

        \[\leadsto \color{blue}{z \cdot \left(y \cdot -0.5\right)} \]
    7. Simplified62.4%

      \[\leadsto \color{blue}{z \cdot \left(y \cdot -0.5\right)} \]

    if -2.10000000000000013e-38 < z < 2.19999999999999997e178

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in y around 0 82.6%

      \[\leadsto \color{blue}{t + 0.125 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification74.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -2.1 \cdot 10^{-38} \lor \neg \left(z \leq 2.2 \cdot 10^{+178}\right):\\ \;\;\;\;z \cdot \left(y \cdot -0.5\right)\\ \mathbf{else}:\\ \;\;\;\;t + 0.125 \cdot x\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 50.5% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;x \leq -1.05 \cdot 10^{+44} \lor \neg \left(x \leq 1.4 \cdot 10^{+58}\right):\\ \;\;\;\;0.125 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (or (<= x -1.05e+44) (not (<= x 1.4e+58))) (* 0.125 x) t))
double code(double x, double y, double z, double t) {
	double tmp;
	if ((x <= -1.05e+44) || !(x <= 1.4e+58)) {
		tmp = 0.125 * x;
	} else {
		tmp = t;
	}
	return tmp;
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    real(8) :: tmp
    if ((x <= (-1.05d+44)) .or. (.not. (x <= 1.4d+58))) then
        tmp = 0.125d0 * x
    else
        tmp = t
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double tmp;
	if ((x <= -1.05e+44) || !(x <= 1.4e+58)) {
		tmp = 0.125 * x;
	} else {
		tmp = t;
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if (x <= -1.05e+44) or not (x <= 1.4e+58):
		tmp = 0.125 * x
	else:
		tmp = t
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if ((x <= -1.05e+44) || !(x <= 1.4e+58))
		tmp = Float64(0.125 * x);
	else
		tmp = t;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if ((x <= -1.05e+44) || ~((x <= 1.4e+58)))
		tmp = 0.125 * x;
	else
		tmp = t;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[Or[LessEqual[x, -1.05e+44], N[Not[LessEqual[x, 1.4e+58]], $MachinePrecision]], N[(0.125 * x), $MachinePrecision], t]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;x \leq -1.05 \cdot 10^{+44} \lor \neg \left(x \leq 1.4 \cdot 10^{+58}\right):\\
\;\;\;\;0.125 \cdot x\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if x < -1.04999999999999993e44 or 1.3999999999999999e58 < x

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in x around inf 69.1%

      \[\leadsto \color{blue}{0.125 \cdot x} \]

    if -1.04999999999999993e44 < x < 1.3999999999999999e58

    1. Initial program 100.0%

      \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
    2. Step-by-step derivation
      1. associate-+l-100.0%

        \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
      2. *-commutative100.0%

        \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
      3. associate-+l-100.0%

        \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
      4. metadata-eval100.0%

        \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
      5. *-commutative100.0%

        \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
      6. associate-/l*100.0%

        \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
    3. Simplified100.0%

      \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
    4. Add Preprocessing
    5. Taylor expanded in t around inf 45.9%

      \[\leadsto \color{blue}{t} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification56.4%

    \[\leadsto \begin{array}{l} \mathbf{if}\;x \leq -1.05 \cdot 10^{+44} \lor \neg \left(x \leq 1.4 \cdot 10^{+58}\right):\\ \;\;\;\;0.125 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 100.0% accurate, 1.2× speedup?

\[\begin{array}{l} \\ t + \left(0.125 \cdot x - y \cdot \frac{z}{2}\right) \end{array} \]
(FPCore (x y z t) :precision binary64 (+ t (- (* 0.125 x) (* y (/ z 2.0)))))
double code(double x, double y, double z, double t) {
	return t + ((0.125 * x) - (y * (z / 2.0)));
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = t + ((0.125d0 * x) - (y * (z / 2.0d0)))
end function
public static double code(double x, double y, double z, double t) {
	return t + ((0.125 * x) - (y * (z / 2.0)));
}
def code(x, y, z, t):
	return t + ((0.125 * x) - (y * (z / 2.0)))
function code(x, y, z, t)
	return Float64(t + Float64(Float64(0.125 * x) - Float64(y * Float64(z / 2.0))))
end
function tmp = code(x, y, z, t)
	tmp = t + ((0.125 * x) - (y * (z / 2.0)));
end
code[x_, y_, z_, t_] := N[(t + N[(N[(0.125 * x), $MachinePrecision] - N[(y * N[(z / 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
t + \left(0.125 \cdot x - y \cdot \frac{z}{2}\right)
\end{array}
Derivation
  1. Initial program 100.0%

    \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
  2. Step-by-step derivation
    1. associate-+l-100.0%

      \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
    2. *-commutative100.0%

      \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
    3. associate-+l-100.0%

      \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
    4. metadata-eval100.0%

      \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
    5. *-commutative100.0%

      \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
    6. associate-/l*100.0%

      \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
  4. Add Preprocessing
  5. Final simplification100.0%

    \[\leadsto t + \left(0.125 \cdot x - y \cdot \frac{z}{2}\right) \]
  6. Add Preprocessing

Alternative 8: 33.3% accurate, 13.0× speedup?

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

\\
t
\end{array}
Derivation
  1. Initial program 100.0%

    \[\left(\frac{1}{8} \cdot x - \frac{y \cdot z}{2}\right) + t \]
  2. Step-by-step derivation
    1. associate-+l-100.0%

      \[\leadsto \color{blue}{\frac{1}{8} \cdot x - \left(\frac{y \cdot z}{2} - t\right)} \]
    2. *-commutative100.0%

      \[\leadsto \frac{1}{8} \cdot x - \left(\frac{\color{blue}{z \cdot y}}{2} - t\right) \]
    3. associate-+l-100.0%

      \[\leadsto \color{blue}{\left(\frac{1}{8} \cdot x - \frac{z \cdot y}{2}\right) + t} \]
    4. metadata-eval100.0%

      \[\leadsto \left(\color{blue}{0.125} \cdot x - \frac{z \cdot y}{2}\right) + t \]
    5. *-commutative100.0%

      \[\leadsto \left(0.125 \cdot x - \frac{\color{blue}{y \cdot z}}{2}\right) + t \]
    6. associate-/l*100.0%

      \[\leadsto \left(0.125 \cdot x - \color{blue}{y \cdot \frac{z}{2}}\right) + t \]
  3. Simplified100.0%

    \[\leadsto \color{blue}{\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + t} \]
  4. Add Preprocessing
  5. Taylor expanded in t around inf 30.7%

    \[\leadsto \color{blue}{t} \]
  6. Final simplification30.7%

    \[\leadsto t \]
  7. Add Preprocessing

Developer target: 100.0% accurate, 1.2× speedup?

\[\begin{array}{l} \\ \left(\frac{x}{8} + t\right) - \frac{z}{2} \cdot y \end{array} \]
(FPCore (x y z t) :precision binary64 (- (+ (/ x 8.0) t) (* (/ z 2.0) y)))
double code(double x, double y, double z, double t) {
	return ((x / 8.0) + t) - ((z / 2.0) * y);
}
real(8) function code(x, y, z, t)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    real(8), intent (in) :: z
    real(8), intent (in) :: t
    code = ((x / 8.0d0) + t) - ((z / 2.0d0) * y)
end function
public static double code(double x, double y, double z, double t) {
	return ((x / 8.0) + t) - ((z / 2.0) * y);
}
def code(x, y, z, t):
	return ((x / 8.0) + t) - ((z / 2.0) * y)
function code(x, y, z, t)
	return Float64(Float64(Float64(x / 8.0) + t) - Float64(Float64(z / 2.0) * y))
end
function tmp = code(x, y, z, t)
	tmp = ((x / 8.0) + t) - ((z / 2.0) * y);
end
code[x_, y_, z_, t_] := N[(N[(N[(x / 8.0), $MachinePrecision] + t), $MachinePrecision] - N[(N[(z / 2.0), $MachinePrecision] * y), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}

\\
\left(\frac{x}{8} + t\right) - \frac{z}{2} \cdot y
\end{array}

Reproduce

?
herbie shell --seed 2024074 
(FPCore (x y z t)
  :name "Diagrams.Solve.Polynomial:quartForm  from diagrams-solve-0.1, B"
  :precision binary64

  :alt
  (- (+ (/ x 8.0) t) (* (/ z 2.0) y))

  (+ (- (* (/ 1.0 8.0) x) (/ (* y z) 2.0)) t))