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

Percentage Accurate: 100.0% → 100.0%
Time: 7.1s
Alternatives: 7
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 7 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, 1.2× speedup?

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

\\
\left(0.125 \cdot x - y \cdot \frac{z}{2}\right) + 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. Final simplification100.0%

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

Alternative 2: 71.4% accurate, 0.4× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \leq -2.5 \cdot 10^{+256} \lor \neg \left(y \leq -2.4 \cdot 10^{+242}\right) \land \left(y \leq -3.6 \cdot 10^{+157} \lor \neg \left(y \leq 3.9 \cdot 10^{-51} \lor \neg \left(y \leq 2.35 \cdot 10^{-23}\right) \land y \leq 55000000000000\right)\right):\\ \;\;\;\;y \cdot \left(z \cdot -0.5\right)\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x + t\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (or (<= y -2.5e+256)
         (and (not (<= y -2.4e+242))
              (or (<= y -3.6e+157)
                  (not
                   (or (<= y 3.9e-51)
                       (and (not (<= y 2.35e-23)) (<= y 55000000000000.0)))))))
   (* y (* z -0.5))
   (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
	double tmp;
	if ((y <= -2.5e+256) || (!(y <= -2.4e+242) && ((y <= -3.6e+157) || !((y <= 3.9e-51) || (!(y <= 2.35e-23) && (y <= 55000000000000.0)))))) {
		tmp = y * (z * -0.5);
	} else {
		tmp = (0.125 * x) + 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 ((y <= (-2.5d+256)) .or. (.not. (y <= (-2.4d+242))) .and. (y <= (-3.6d+157)) .or. (.not. (y <= 3.9d-51) .or. (.not. (y <= 2.35d-23)) .and. (y <= 55000000000000.0d0))) then
        tmp = y * (z * (-0.5d0))
    else
        tmp = (0.125d0 * x) + t
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double tmp;
	if ((y <= -2.5e+256) || (!(y <= -2.4e+242) && ((y <= -3.6e+157) || !((y <= 3.9e-51) || (!(y <= 2.35e-23) && (y <= 55000000000000.0)))))) {
		tmp = y * (z * -0.5);
	} else {
		tmp = (0.125 * x) + t;
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if (y <= -2.5e+256) or (not (y <= -2.4e+242) and ((y <= -3.6e+157) or not ((y <= 3.9e-51) or (not (y <= 2.35e-23) and (y <= 55000000000000.0))))):
		tmp = y * (z * -0.5)
	else:
		tmp = (0.125 * x) + t
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if ((y <= -2.5e+256) || (!(y <= -2.4e+242) && ((y <= -3.6e+157) || !((y <= 3.9e-51) || (!(y <= 2.35e-23) && (y <= 55000000000000.0))))))
		tmp = Float64(y * Float64(z * -0.5));
	else
		tmp = Float64(Float64(0.125 * x) + t);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if ((y <= -2.5e+256) || (~((y <= -2.4e+242)) && ((y <= -3.6e+157) || ~(((y <= 3.9e-51) || (~((y <= 2.35e-23)) && (y <= 55000000000000.0)))))))
		tmp = y * (z * -0.5);
	else
		tmp = (0.125 * x) + t;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[Or[LessEqual[y, -2.5e+256], And[N[Not[LessEqual[y, -2.4e+242]], $MachinePrecision], Or[LessEqual[y, -3.6e+157], N[Not[Or[LessEqual[y, 3.9e-51], And[N[Not[LessEqual[y, 2.35e-23]], $MachinePrecision], LessEqual[y, 55000000000000.0]]]], $MachinePrecision]]]], N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \leq -2.5 \cdot 10^{+256} \lor \neg \left(y \leq -2.4 \cdot 10^{+242}\right) \land \left(y \leq -3.6 \cdot 10^{+157} \lor \neg \left(y \leq 3.9 \cdot 10^{-51} \lor \neg \left(y \leq 2.35 \cdot 10^{-23}\right) \land y \leq 55000000000000\right)\right):\\
\;\;\;\;y \cdot \left(z \cdot -0.5\right)\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if y < -2.50000000000000008e256 or -2.40000000000000012e242 < y < -3.60000000000000024e157 or 3.8999999999999997e-51 < y < 2.35e-23 or 5.5e13 < y

    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 64.5%

      \[\leadsto \color{blue}{-0.5 \cdot \left(y \cdot z\right)} \]
    6. Step-by-step derivation
      1. *-commutative64.5%

        \[\leadsto \color{blue}{\left(y \cdot z\right) \cdot -0.5} \]
      2. associate-*r*64.5%

        \[\leadsto \color{blue}{y \cdot \left(z \cdot -0.5\right)} \]
    7. Simplified64.5%

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

    if -2.50000000000000008e256 < y < -2.40000000000000012e242 or -3.60000000000000024e157 < y < 3.8999999999999997e-51 or 2.35e-23 < y < 5.5e13

    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 80.1%

      \[\leadsto \color{blue}{t + 0.125 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification74.0%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \leq -2.5 \cdot 10^{+256} \lor \neg \left(y \leq -2.4 \cdot 10^{+242}\right) \land \left(y \leq -3.6 \cdot 10^{+157} \lor \neg \left(y \leq 3.9 \cdot 10^{-51} \lor \neg \left(y \leq 2.35 \cdot 10^{-23}\right) \land y \leq 55000000000000\right)\right):\\ \;\;\;\;y \cdot \left(z \cdot -0.5\right)\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x + t\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 87.7% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41} \lor \neg \left(y \cdot z \leq 10^{+85}\right):\\ \;\;\;\;t - \left(y \cdot z\right) \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x + t\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (or (<= (* y z) -5e+41) (not (<= (* y z) 1e+85)))
   (- t (* (* y z) 0.5))
   (+ (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
	double tmp;
	if (((y * z) <= -5e+41) || !((y * z) <= 1e+85)) {
		tmp = t - ((y * z) * 0.5);
	} else {
		tmp = (0.125 * x) + 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 (((y * z) <= (-5d+41)) .or. (.not. ((y * z) <= 1d+85))) then
        tmp = t - ((y * z) * 0.5d0)
    else
        tmp = (0.125d0 * x) + t
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double tmp;
	if (((y * z) <= -5e+41) || !((y * z) <= 1e+85)) {
		tmp = t - ((y * z) * 0.5);
	} else {
		tmp = (0.125 * x) + t;
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if ((y * z) <= -5e+41) or not ((y * z) <= 1e+85):
		tmp = t - ((y * z) * 0.5)
	else:
		tmp = (0.125 * x) + t
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if ((Float64(y * z) <= -5e+41) || !(Float64(y * z) <= 1e+85))
		tmp = Float64(t - Float64(Float64(y * z) * 0.5));
	else
		tmp = Float64(Float64(0.125 * x) + t);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (((y * z) <= -5e+41) || ~(((y * z) <= 1e+85)))
		tmp = t - ((y * z) * 0.5);
	else
		tmp = (0.125 * x) + t;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[Or[LessEqual[N[(y * z), $MachinePrecision], -5e+41], N[Not[LessEqual[N[(y * z), $MachinePrecision], 1e+85]], $MachinePrecision]], N[(t - N[(N[(y * z), $MachinePrecision] * 0.5), $MachinePrecision]), $MachinePrecision], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41} \lor \neg \left(y \cdot z \leq 10^{+85}\right):\\
\;\;\;\;t - \left(y \cdot z\right) \cdot 0.5\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (*.f64 y z) < -5.00000000000000022e41 or 1e85 < (*.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 91.6%

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

    if -5.00000000000000022e41 < (*.f64 y z) < 1e85

    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 90.9%

      \[\leadsto \color{blue}{t + 0.125 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification91.2%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41} \lor \neg \left(y \cdot z \leq 10^{+85}\right):\\ \;\;\;\;t - \left(y \cdot z\right) \cdot 0.5\\ \mathbf{else}:\\ \;\;\;\;0.125 \cdot x + t\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 87.6% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \left(y \cdot z\right) \cdot 0.5\\ \mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41}:\\ \;\;\;\;0.125 \cdot x - t\_1\\ \mathbf{elif}\;y \cdot z \leq 10^{+85}:\\ \;\;\;\;0.125 \cdot x + t\\ \mathbf{else}:\\ \;\;\;\;t - t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* (* y z) 0.5)))
   (if (<= (* y z) -5e+41)
     (- (* 0.125 x) t_1)
     (if (<= (* y z) 1e+85) (+ (* 0.125 x) t) (- t t_1)))))
double code(double x, double y, double z, double t) {
	double t_1 = (y * z) * 0.5;
	double tmp;
	if ((y * z) <= -5e+41) {
		tmp = (0.125 * x) - t_1;
	} else if ((y * z) <= 1e+85) {
		tmp = (0.125 * x) + t;
	} 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 = (y * z) * 0.5d0
    if ((y * z) <= (-5d+41)) then
        tmp = (0.125d0 * x) - t_1
    else if ((y * z) <= 1d+85) then
        tmp = (0.125d0 * x) + t
    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 = (y * z) * 0.5;
	double tmp;
	if ((y * z) <= -5e+41) {
		tmp = (0.125 * x) - t_1;
	} else if ((y * z) <= 1e+85) {
		tmp = (0.125 * x) + t;
	} else {
		tmp = t - t_1;
	}
	return tmp;
}
def code(x, y, z, t):
	t_1 = (y * z) * 0.5
	tmp = 0
	if (y * z) <= -5e+41:
		tmp = (0.125 * x) - t_1
	elif (y * z) <= 1e+85:
		tmp = (0.125 * x) + t
	else:
		tmp = t - t_1
	return tmp
function code(x, y, z, t)
	t_1 = Float64(Float64(y * z) * 0.5)
	tmp = 0.0
	if (Float64(y * z) <= -5e+41)
		tmp = Float64(Float64(0.125 * x) - t_1);
	elseif (Float64(y * z) <= 1e+85)
		tmp = Float64(Float64(0.125 * x) + t);
	else
		tmp = Float64(t - t_1);
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	t_1 = (y * z) * 0.5;
	tmp = 0.0;
	if ((y * z) <= -5e+41)
		tmp = (0.125 * x) - t_1;
	elseif ((y * z) <= 1e+85)
		tmp = (0.125 * x) + t;
	else
		tmp = t - t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(N[(y * z), $MachinePrecision] * 0.5), $MachinePrecision]}, If[LessEqual[N[(y * z), $MachinePrecision], -5e+41], N[(N[(0.125 * x), $MachinePrecision] - t$95$1), $MachinePrecision], If[LessEqual[N[(y * z), $MachinePrecision], 1e+85], N[(N[(0.125 * x), $MachinePrecision] + t), $MachinePrecision], N[(t - t$95$1), $MachinePrecision]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \left(y \cdot z\right) \cdot 0.5\\
\mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41}:\\
\;\;\;\;0.125 \cdot x - t\_1\\

\mathbf{elif}\;y \cdot z \leq 10^{+85}:\\
\;\;\;\;0.125 \cdot x + t\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if (*.f64 y z) < -5.00000000000000022e41

    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 92.7%

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

    if -5.00000000000000022e41 < (*.f64 y z) < 1e85

    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 90.9%

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

    if 1e85 < (*.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 94.5%

      \[\leadsto \color{blue}{t - 0.5 \cdot \left(y \cdot z\right)} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification91.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;y \cdot z \leq -5 \cdot 10^{+41}:\\ \;\;\;\;0.125 \cdot x - \left(y \cdot z\right) \cdot 0.5\\ \mathbf{elif}\;y \cdot z \leq 10^{+85}:\\ \;\;\;\;0.125 \cdot x + t\\ \mathbf{else}:\\ \;\;\;\;t - \left(y \cdot z\right) \cdot 0.5\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 48.2% accurate, 0.6× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := y \cdot \left(z \cdot -0.5\right)\\ \mathbf{if}\;z \leq -8.8 \cdot 10^{-92}:\\ \;\;\;\;t\_1\\ \mathbf{elif}\;z \leq 16000000000000:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{elif}\;z \leq 1.9 \cdot 10^{+97}:\\ \;\;\;\;t\\ \mathbf{else}:\\ \;\;\;\;t\_1\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (let* ((t_1 (* y (* z -0.5))))
   (if (<= z -8.8e-92)
     t_1
     (if (<= z 16000000000000.0) (* 0.125 x) (if (<= z 1.9e+97) t t_1)))))
double code(double x, double y, double z, double t) {
	double t_1 = y * (z * -0.5);
	double tmp;
	if (z <= -8.8e-92) {
		tmp = t_1;
	} else if (z <= 16000000000000.0) {
		tmp = 0.125 * x;
	} else if (z <= 1.9e+97) {
		tmp = t;
	} else {
		tmp = 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 = y * (z * (-0.5d0))
    if (z <= (-8.8d-92)) then
        tmp = t_1
    else if (z <= 16000000000000.0d0) then
        tmp = 0.125d0 * x
    else if (z <= 1.9d+97) then
        tmp = t
    else
        tmp = t_1
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t) {
	double t_1 = y * (z * -0.5);
	double tmp;
	if (z <= -8.8e-92) {
		tmp = t_1;
	} else if (z <= 16000000000000.0) {
		tmp = 0.125 * x;
	} else if (z <= 1.9e+97) {
		tmp = t;
	} else {
		tmp = t_1;
	}
	return tmp;
}
def code(x, y, z, t):
	t_1 = y * (z * -0.5)
	tmp = 0
	if z <= -8.8e-92:
		tmp = t_1
	elif z <= 16000000000000.0:
		tmp = 0.125 * x
	elif z <= 1.9e+97:
		tmp = t
	else:
		tmp = t_1
	return tmp
function code(x, y, z, t)
	t_1 = Float64(y * Float64(z * -0.5))
	tmp = 0.0
	if (z <= -8.8e-92)
		tmp = t_1;
	elseif (z <= 16000000000000.0)
		tmp = Float64(0.125 * x);
	elseif (z <= 1.9e+97)
		tmp = t;
	else
		tmp = t_1;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	t_1 = y * (z * -0.5);
	tmp = 0.0;
	if (z <= -8.8e-92)
		tmp = t_1;
	elseif (z <= 16000000000000.0)
		tmp = 0.125 * x;
	elseif (z <= 1.9e+97)
		tmp = t;
	else
		tmp = t_1;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[(y * N[(z * -0.5), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[z, -8.8e-92], t$95$1, If[LessEqual[z, 16000000000000.0], N[(0.125 * x), $MachinePrecision], If[LessEqual[z, 1.9e+97], t, t$95$1]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := y \cdot \left(z \cdot -0.5\right)\\
\mathbf{if}\;z \leq -8.8 \cdot 10^{-92}:\\
\;\;\;\;t\_1\\

\mathbf{elif}\;z \leq 16000000000000:\\
\;\;\;\;0.125 \cdot x\\

\mathbf{elif}\;z \leq 1.9 \cdot 10^{+97}:\\
\;\;\;\;t\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 3 regimes
  2. if z < -8.79999999999999949e-92 or 1.90000000000000018e97 < 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 53.3%

      \[\leadsto \color{blue}{-0.5 \cdot \left(y \cdot z\right)} \]
    6. Step-by-step derivation
      1. *-commutative53.3%

        \[\leadsto \color{blue}{\left(y \cdot z\right) \cdot -0.5} \]
      2. associate-*r*53.3%

        \[\leadsto \color{blue}{y \cdot \left(z \cdot -0.5\right)} \]
    7. Simplified53.3%

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

    if -8.79999999999999949e-92 < z < 1.6e13

    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 47.6%

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

    if 1.6e13 < z < 1.90000000000000018e97

    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 23.9%

      \[\leadsto \color{blue}{t} \]
  3. Recombined 3 regimes into one program.
  4. Final simplification48.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;z \leq -8.8 \cdot 10^{-92}:\\ \;\;\;\;y \cdot \left(z \cdot -0.5\right)\\ \mathbf{elif}\;z \leq 16000000000000:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{elif}\;z \leq 1.9 \cdot 10^{+97}:\\ \;\;\;\;t\\ \mathbf{else}:\\ \;\;\;\;y \cdot \left(z \cdot -0.5\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 6: 49.9% accurate, 1.0× speedup?

\[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;t \leq -2.2 \cdot 10^{+98}:\\ \;\;\;\;t\\ \mathbf{elif}\;t \leq 2.95 \cdot 10^{+26}:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\\ \end{array} \end{array} \]
(FPCore (x y z t)
 :precision binary64
 (if (<= t -2.2e+98) t (if (<= t 2.95e+26) (* 0.125 x) t)))
double code(double x, double y, double z, double t) {
	double tmp;
	if (t <= -2.2e+98) {
		tmp = t;
	} else if (t <= 2.95e+26) {
		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 (t <= (-2.2d+98)) then
        tmp = t
    else if (t <= 2.95d+26) 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 (t <= -2.2e+98) {
		tmp = t;
	} else if (t <= 2.95e+26) {
		tmp = 0.125 * x;
	} else {
		tmp = t;
	}
	return tmp;
}
def code(x, y, z, t):
	tmp = 0
	if t <= -2.2e+98:
		tmp = t
	elif t <= 2.95e+26:
		tmp = 0.125 * x
	else:
		tmp = t
	return tmp
function code(x, y, z, t)
	tmp = 0.0
	if (t <= -2.2e+98)
		tmp = t;
	elseif (t <= 2.95e+26)
		tmp = Float64(0.125 * x);
	else
		tmp = t;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t)
	tmp = 0.0;
	if (t <= -2.2e+98)
		tmp = t;
	elseif (t <= 2.95e+26)
		tmp = 0.125 * x;
	else
		tmp = t;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_] := If[LessEqual[t, -2.2e+98], t, If[LessEqual[t, 2.95e+26], N[(0.125 * x), $MachinePrecision], t]]
\begin{array}{l}

\\
\begin{array}{l}
\mathbf{if}\;t \leq -2.2 \cdot 10^{+98}:\\
\;\;\;\;t\\

\mathbf{elif}\;t \leq 2.95 \cdot 10^{+26}:\\
\;\;\;\;0.125 \cdot x\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if t < -2.20000000000000009e98 or 2.95000000000000015e26 < t

    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 64.9%

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

    if -2.20000000000000009e98 < t < 2.95000000000000015e26

    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 49.2%

      \[\leadsto \color{blue}{0.125 \cdot x} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification54.7%

    \[\leadsto \begin{array}{l} \mathbf{if}\;t \leq -2.2 \cdot 10^{+98}:\\ \;\;\;\;t\\ \mathbf{elif}\;t \leq 2.95 \cdot 10^{+26}:\\ \;\;\;\;0.125 \cdot x\\ \mathbf{else}:\\ \;\;\;\;t\\ \end{array} \]
  5. Add Preprocessing

Alternative 7: 32.9% 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 28.9%

    \[\leadsto \color{blue}{t} \]
  6. Final simplification28.9%

    \[\leadsto t \]
  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 2024066 
(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))