Optimisation.CirclePacking:place from circle-packing-0.1.0.4, E

Percentage Accurate: 92.9% → 97.3%
Time: 9.9s
Alternatives: 8
Speedup: 1.1×

Specification

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

\\
x + \frac{y \cdot \left(z - t\right)}{a}
\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: 92.9% accurate, 1.0× speedup?

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

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

Alternative 1: 97.3% accurate, 1.1× speedup?

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

\\
\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)
\end{array}
Derivation
  1. Initial program 94.3%

    \[x + \frac{y \cdot \left(z - t\right)}{a} \]
  2. Add Preprocessing
  3. Step-by-step derivation
    1. +-commutativeN/A

      \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a} + x} \]
    2. *-commutativeN/A

      \[\leadsto \frac{\color{blue}{\left(z - t\right) \cdot y}}{a} + x \]
    3. associate-/l*N/A

      \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} + x \]
    4. *-commutativeN/A

      \[\leadsto \color{blue}{\frac{y}{a} \cdot \left(z - t\right)} + x \]
    5. accelerator-lowering-fma.f64N/A

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
    6. /-lowering-/.f64N/A

      \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z - t, x\right) \]
    7. --lowering--.f6498.2

      \[\leadsto \mathsf{fma}\left(\frac{y}{a}, \color{blue}{z - t}, x\right) \]
  4. Applied egg-rr98.2%

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

Alternative 2: 84.7% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y \cdot \left(z - t\right)}{a}\\ t_2 := \frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{if}\;t\_1 \leq -5 \cdot 10^{+181}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t\_1 \leq 1000:\\ \;\;\;\;x - \frac{y}{a} \cdot t\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (/ (* y (- z t)) a)) (t_2 (* (/ y a) (- z t))))
   (if (<= t_1 -5e+181) t_2 (if (<= t_1 1000.0) (- x (* (/ y a) t)) t_2))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * (z - t);
	double tmp;
	if (t_1 <= -5e+181) {
		tmp = t_2;
	} else if (t_1 <= 1000.0) {
		tmp = x - ((y / a) * t);
	} else {
		tmp = t_2;
	}
	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) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (y * (z - t)) / a
    t_2 = (y / a) * (z - t)
    if (t_1 <= (-5d+181)) then
        tmp = t_2
    else if (t_1 <= 1000.0d0) then
        tmp = x - ((y / a) * t)
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * (z - t);
	double tmp;
	if (t_1 <= -5e+181) {
		tmp = t_2;
	} else if (t_1 <= 1000.0) {
		tmp = x - ((y / a) * t);
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = (y * (z - t)) / a
	t_2 = (y / a) * (z - t)
	tmp = 0
	if t_1 <= -5e+181:
		tmp = t_2
	elif t_1 <= 1000.0:
		tmp = x - ((y / a) * t)
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(y * Float64(z - t)) / a)
	t_2 = Float64(Float64(y / a) * Float64(z - t))
	tmp = 0.0
	if (t_1 <= -5e+181)
		tmp = t_2;
	elseif (t_1 <= 1000.0)
		tmp = Float64(x - Float64(Float64(y / a) * t));
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = (y * (z - t)) / a;
	t_2 = (y / a) * (z - t);
	tmp = 0.0;
	if (t_1 <= -5e+181)
		tmp = t_2;
	elseif (t_1 <= 1000.0)
		tmp = x - ((y / a) * t);
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y / a), $MachinePrecision] * N[(z - t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, -5e+181], t$95$2, If[LessEqual[t$95$1, 1000.0], N[(x - N[(N[(y / a), $MachinePrecision] * t), $MachinePrecision]), $MachinePrecision], t$95$2]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{y \cdot \left(z - t\right)}{a}\\
t_2 := \frac{y}{a} \cdot \left(z - t\right)\\
\mathbf{if}\;t\_1 \leq -5 \cdot 10^{+181}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t\_1 \leq 1000:\\
\;\;\;\;x - \frac{y}{a} \cdot t\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 y (-.f64 z t)) a) < -5.0000000000000003e181 or 1e3 < (/.f64 (*.f64 y (-.f64 z t)) a)

    1. Initial program 90.3%

      \[x + \frac{y \cdot \left(z - t\right)}{a} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a} + x} \]
      2. *-commutativeN/A

        \[\leadsto \frac{\color{blue}{\left(z - t\right) \cdot y}}{a} + x \]
      3. associate-/l*N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} + x \]
      4. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot \left(z - t\right)} + x \]
      5. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
      6. /-lowering-/.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z - t, x\right) \]
      7. --lowering--.f6497.3

        \[\leadsto \mathsf{fma}\left(\frac{y}{a}, \color{blue}{z - t}, x\right) \]
    4. Applied egg-rr97.3%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
    5. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(\frac{z}{a} - \frac{t}{a}\right)} \]
    6. Step-by-step derivation
      1. div-subN/A

        \[\leadsto y \cdot \color{blue}{\frac{z - t}{a}} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      3. /-lowering-/.f64N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      4. *-lowering-*.f64N/A

        \[\leadsto \frac{\color{blue}{y \cdot \left(z - t\right)}}{a} \]
      5. --lowering--.f6485.1

        \[\leadsto \frac{y \cdot \color{blue}{\left(z - t\right)}}{a} \]
    7. Simplified85.1%

      \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
    8. Step-by-step derivation
      1. *-commutativeN/A

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

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      3. *-lowering-*.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      4. --lowering--.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right)} \cdot \frac{y}{a} \]
      5. /-lowering-/.f6491.5

        \[\leadsto \left(z - t\right) \cdot \color{blue}{\frac{y}{a}} \]
    9. Applied egg-rr91.5%

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

    if -5.0000000000000003e181 < (/.f64 (*.f64 y (-.f64 z t)) a) < 1e3

    1. Initial program 99.8%

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

      \[\leadsto \color{blue}{x + -1 \cdot \frac{t \cdot y}{a}} \]
    4. Step-by-step derivation
      1. mul-1-negN/A

        \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{t \cdot y}{a}\right)\right)} \]
      2. unsub-negN/A

        \[\leadsto \color{blue}{x - \frac{t \cdot y}{a}} \]
      3. --lowering--.f64N/A

        \[\leadsto \color{blue}{x - \frac{t \cdot y}{a}} \]
      4. *-commutativeN/A

        \[\leadsto x - \frac{\color{blue}{y \cdot t}}{a} \]
      5. associate-/l*N/A

        \[\leadsto x - \color{blue}{y \cdot \frac{t}{a}} \]
      6. *-lowering-*.f64N/A

        \[\leadsto x - \color{blue}{y \cdot \frac{t}{a}} \]
      7. /-lowering-/.f6489.2

        \[\leadsto x - y \cdot \color{blue}{\frac{t}{a}} \]
    5. Simplified89.2%

      \[\leadsto \color{blue}{x - y \cdot \frac{t}{a}} \]
    6. Step-by-step derivation
      1. --lowering--.f64N/A

        \[\leadsto \color{blue}{x - y \cdot \frac{t}{a}} \]
      2. clear-numN/A

        \[\leadsto x - y \cdot \color{blue}{\frac{1}{\frac{a}{t}}} \]
      3. associate-/r/N/A

        \[\leadsto x - y \cdot \color{blue}{\left(\frac{1}{a} \cdot t\right)} \]
      4. associate-*r*N/A

        \[\leadsto x - \color{blue}{\left(y \cdot \frac{1}{a}\right) \cdot t} \]
      5. div-invN/A

        \[\leadsto x - \color{blue}{\frac{y}{a}} \cdot t \]
      6. *-lowering-*.f64N/A

        \[\leadsto x - \color{blue}{\frac{y}{a} \cdot t} \]
      7. /-lowering-/.f6492.5

        \[\leadsto x - \color{blue}{\frac{y}{a}} \cdot t \]
    7. Applied egg-rr92.5%

      \[\leadsto \color{blue}{x - \frac{y}{a} \cdot t} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification91.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z - t\right)}{a} \leq -5 \cdot 10^{+181}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{elif}\;\frac{y \cdot \left(z - t\right)}{a} \leq 1000:\\ \;\;\;\;x - \frac{y}{a} \cdot t\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 3: 85.6% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y \cdot \left(z - t\right)}{a}\\ t_2 := \frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{if}\;t\_1 \leq -1 \cdot 10^{+73}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t\_1 \leq 1000:\\ \;\;\;\;x - y \cdot \frac{t}{a}\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (/ (* y (- z t)) a)) (t_2 (* (/ y a) (- z t))))
   (if (<= t_1 -1e+73) t_2 (if (<= t_1 1000.0) (- x (* y (/ t a))) t_2))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * (z - t);
	double tmp;
	if (t_1 <= -1e+73) {
		tmp = t_2;
	} else if (t_1 <= 1000.0) {
		tmp = x - (y * (t / a));
	} else {
		tmp = t_2;
	}
	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) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (y * (z - t)) / a
    t_2 = (y / a) * (z - t)
    if (t_1 <= (-1d+73)) then
        tmp = t_2
    else if (t_1 <= 1000.0d0) then
        tmp = x - (y * (t / a))
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * (z - t);
	double tmp;
	if (t_1 <= -1e+73) {
		tmp = t_2;
	} else if (t_1 <= 1000.0) {
		tmp = x - (y * (t / a));
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = (y * (z - t)) / a
	t_2 = (y / a) * (z - t)
	tmp = 0
	if t_1 <= -1e+73:
		tmp = t_2
	elif t_1 <= 1000.0:
		tmp = x - (y * (t / a))
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(y * Float64(z - t)) / a)
	t_2 = Float64(Float64(y / a) * Float64(z - t))
	tmp = 0.0
	if (t_1 <= -1e+73)
		tmp = t_2;
	elseif (t_1 <= 1000.0)
		tmp = Float64(x - Float64(y * Float64(t / a)));
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = (y * (z - t)) / a;
	t_2 = (y / a) * (z - t);
	tmp = 0.0;
	if (t_1 <= -1e+73)
		tmp = t_2;
	elseif (t_1 <= 1000.0)
		tmp = x - (y * (t / a));
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y / a), $MachinePrecision] * N[(z - t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, -1e+73], t$95$2, If[LessEqual[t$95$1, 1000.0], N[(x - N[(y * N[(t / a), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], t$95$2]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{y \cdot \left(z - t\right)}{a}\\
t_2 := \frac{y}{a} \cdot \left(z - t\right)\\
\mathbf{if}\;t\_1 \leq -1 \cdot 10^{+73}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t\_1 \leq 1000:\\
\;\;\;\;x - y \cdot \frac{t}{a}\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 y (-.f64 z t)) a) < -9.99999999999999983e72 or 1e3 < (/.f64 (*.f64 y (-.f64 z t)) a)

    1. Initial program 91.1%

      \[x + \frac{y \cdot \left(z - t\right)}{a} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a} + x} \]
      2. *-commutativeN/A

        \[\leadsto \frac{\color{blue}{\left(z - t\right) \cdot y}}{a} + x \]
      3. associate-/l*N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} + x \]
      4. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot \left(z - t\right)} + x \]
      5. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
      6. /-lowering-/.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z - t, x\right) \]
      7. --lowering--.f6497.5

        \[\leadsto \mathsf{fma}\left(\frac{y}{a}, \color{blue}{z - t}, x\right) \]
    4. Applied egg-rr97.5%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
    5. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(\frac{z}{a} - \frac{t}{a}\right)} \]
    6. Step-by-step derivation
      1. div-subN/A

        \[\leadsto y \cdot \color{blue}{\frac{z - t}{a}} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      3. /-lowering-/.f64N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      4. *-lowering-*.f64N/A

        \[\leadsto \frac{\color{blue}{y \cdot \left(z - t\right)}}{a} \]
      5. --lowering--.f6484.5

        \[\leadsto \frac{y \cdot \color{blue}{\left(z - t\right)}}{a} \]
    7. Simplified84.5%

      \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
    8. Step-by-step derivation
      1. *-commutativeN/A

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

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      3. *-lowering-*.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      4. --lowering--.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right)} \cdot \frac{y}{a} \]
      5. /-lowering-/.f6490.4

        \[\leadsto \left(z - t\right) \cdot \color{blue}{\frac{y}{a}} \]
    9. Applied egg-rr90.4%

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

    if -9.99999999999999983e72 < (/.f64 (*.f64 y (-.f64 z t)) a) < 1e3

    1. Initial program 99.9%

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

      \[\leadsto \color{blue}{x + -1 \cdot \frac{t \cdot y}{a}} \]
    4. Step-by-step derivation
      1. mul-1-negN/A

        \[\leadsto x + \color{blue}{\left(\mathsf{neg}\left(\frac{t \cdot y}{a}\right)\right)} \]
      2. unsub-negN/A

        \[\leadsto \color{blue}{x - \frac{t \cdot y}{a}} \]
      3. --lowering--.f64N/A

        \[\leadsto \color{blue}{x - \frac{t \cdot y}{a}} \]
      4. *-commutativeN/A

        \[\leadsto x - \frac{\color{blue}{y \cdot t}}{a} \]
      5. associate-/l*N/A

        \[\leadsto x - \color{blue}{y \cdot \frac{t}{a}} \]
      6. *-lowering-*.f64N/A

        \[\leadsto x - \color{blue}{y \cdot \frac{t}{a}} \]
      7. /-lowering-/.f6494.5

        \[\leadsto x - y \cdot \color{blue}{\frac{t}{a}} \]
    5. Simplified94.5%

      \[\leadsto \color{blue}{x - y \cdot \frac{t}{a}} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification91.9%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z - t\right)}{a} \leq -1 \cdot 10^{+73}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{elif}\;\frac{y \cdot \left(z - t\right)}{a} \leq 1000:\\ \;\;\;\;x - y \cdot \frac{t}{a}\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 4: 85.1% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y \cdot \left(z - t\right)}{a}\\ t_2 := \frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{if}\;t\_1 \leq -5 \cdot 10^{+45}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t\_1 \leq 2 \cdot 10^{-12}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{a}, z, x\right)\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (/ (* y (- z t)) a)) (t_2 (* (/ y a) (- z t))))
   (if (<= t_1 -5e+45) t_2 (if (<= t_1 2e-12) (fma (/ y a) z x) t_2))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * (z - t);
	double tmp;
	if (t_1 <= -5e+45) {
		tmp = t_2;
	} else if (t_1 <= 2e-12) {
		tmp = fma((y / a), z, x);
	} else {
		tmp = t_2;
	}
	return tmp;
}
function code(x, y, z, t, a)
	t_1 = Float64(Float64(y * Float64(z - t)) / a)
	t_2 = Float64(Float64(y / a) * Float64(z - t))
	tmp = 0.0
	if (t_1 <= -5e+45)
		tmp = t_2;
	elseif (t_1 <= 2e-12)
		tmp = fma(Float64(y / a), z, x);
	else
		tmp = t_2;
	end
	return tmp
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y / a), $MachinePrecision] * N[(z - t), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[t$95$1, -5e+45], t$95$2, If[LessEqual[t$95$1, 2e-12], N[(N[(y / a), $MachinePrecision] * z + x), $MachinePrecision], t$95$2]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{y \cdot \left(z - t\right)}{a}\\
t_2 := \frac{y}{a} \cdot \left(z - t\right)\\
\mathbf{if}\;t\_1 \leq -5 \cdot 10^{+45}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t\_1 \leq 2 \cdot 10^{-12}:\\
\;\;\;\;\mathsf{fma}\left(\frac{y}{a}, z, x\right)\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 y (-.f64 z t)) a) < -5e45 or 1.99999999999999996e-12 < (/.f64 (*.f64 y (-.f64 z t)) a)

    1. Initial program 91.4%

      \[x + \frac{y \cdot \left(z - t\right)}{a} \]
    2. Add Preprocessing
    3. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a} + x} \]
      2. *-commutativeN/A

        \[\leadsto \frac{\color{blue}{\left(z - t\right) \cdot y}}{a} + x \]
      3. associate-/l*N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} + x \]
      4. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot \left(z - t\right)} + x \]
      5. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
      6. /-lowering-/.f64N/A

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z - t, x\right) \]
      7. --lowering--.f6497.5

        \[\leadsto \mathsf{fma}\left(\frac{y}{a}, \color{blue}{z - t}, x\right) \]
    4. Applied egg-rr97.5%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z - t, x\right)} \]
    5. Taylor expanded in y around inf

      \[\leadsto \color{blue}{y \cdot \left(\frac{z}{a} - \frac{t}{a}\right)} \]
    6. Step-by-step derivation
      1. div-subN/A

        \[\leadsto y \cdot \color{blue}{\frac{z - t}{a}} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      3. /-lowering-/.f64N/A

        \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
      4. *-lowering-*.f64N/A

        \[\leadsto \frac{\color{blue}{y \cdot \left(z - t\right)}}{a} \]
      5. --lowering--.f6483.8

        \[\leadsto \frac{y \cdot \color{blue}{\left(z - t\right)}}{a} \]
    7. Simplified83.8%

      \[\leadsto \color{blue}{\frac{y \cdot \left(z - t\right)}{a}} \]
    8. Step-by-step derivation
      1. *-commutativeN/A

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

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      3. *-lowering-*.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right) \cdot \frac{y}{a}} \]
      4. --lowering--.f64N/A

        \[\leadsto \color{blue}{\left(z - t\right)} \cdot \frac{y}{a} \]
      5. /-lowering-/.f6489.5

        \[\leadsto \left(z - t\right) \cdot \color{blue}{\frac{y}{a}} \]
    9. Applied egg-rr89.5%

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

    if -5e45 < (/.f64 (*.f64 y (-.f64 z t)) a) < 1.99999999999999996e-12

    1. Initial program 99.9%

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

      \[\leadsto \color{blue}{x + \frac{y \cdot z}{a}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot z}{a} + x} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{y \cdot \frac{z}{a}} + x \]
      3. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]
      4. /-lowering-/.f6487.9

        \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z}{a}}, x\right) \]
    5. Simplified87.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]
    6. Step-by-step derivation
      1. clear-numN/A

        \[\leadsto y \cdot \color{blue}{\frac{1}{\frac{a}{z}}} + x \]
      2. associate-/r/N/A

        \[\leadsto y \cdot \color{blue}{\left(\frac{1}{a} \cdot z\right)} + x \]
      3. associate-*r*N/A

        \[\leadsto \color{blue}{\left(y \cdot \frac{1}{a}\right) \cdot z} + x \]
      4. div-invN/A

        \[\leadsto \color{blue}{\frac{y}{a}} \cdot z + x \]
      5. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z, x\right)} \]
      6. /-lowering-/.f6488.9

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z, x\right) \]
    7. Applied egg-rr88.9%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z, x\right)} \]
  3. Recombined 2 regimes into one program.
  4. Final simplification89.3%

    \[\leadsto \begin{array}{l} \mathbf{if}\;\frac{y \cdot \left(z - t\right)}{a} \leq -5 \cdot 10^{+45}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \mathbf{elif}\;\frac{y \cdot \left(z - t\right)}{a} \leq 2 \cdot 10^{-12}:\\ \;\;\;\;\mathsf{fma}\left(\frac{y}{a}, z, x\right)\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{a} \cdot \left(z - t\right)\\ \end{array} \]
  5. Add Preprocessing

Alternative 5: 58.8% accurate, 0.3× speedup?

\[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{y \cdot \left(z - t\right)}{a}\\ t_2 := \frac{y}{a} \cdot z\\ \mathbf{if}\;t\_1 \leq -1 \cdot 10^{+195}:\\ \;\;\;\;t\_2\\ \mathbf{elif}\;t\_1 \leq 5000:\\ \;\;\;\;x\\ \mathbf{else}:\\ \;\;\;\;t\_2\\ \end{array} \end{array} \]
(FPCore (x y z t a)
 :precision binary64
 (let* ((t_1 (/ (* y (- z t)) a)) (t_2 (* (/ y a) z)))
   (if (<= t_1 -1e+195) t_2 (if (<= t_1 5000.0) x t_2))))
double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * z;
	double tmp;
	if (t_1 <= -1e+195) {
		tmp = t_2;
	} else if (t_1 <= 5000.0) {
		tmp = x;
	} else {
		tmp = t_2;
	}
	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) :: t_1
    real(8) :: t_2
    real(8) :: tmp
    t_1 = (y * (z - t)) / a
    t_2 = (y / a) * z
    if (t_1 <= (-1d+195)) then
        tmp = t_2
    else if (t_1 <= 5000.0d0) then
        tmp = x
    else
        tmp = t_2
    end if
    code = tmp
end function
public static double code(double x, double y, double z, double t, double a) {
	double t_1 = (y * (z - t)) / a;
	double t_2 = (y / a) * z;
	double tmp;
	if (t_1 <= -1e+195) {
		tmp = t_2;
	} else if (t_1 <= 5000.0) {
		tmp = x;
	} else {
		tmp = t_2;
	}
	return tmp;
}
def code(x, y, z, t, a):
	t_1 = (y * (z - t)) / a
	t_2 = (y / a) * z
	tmp = 0
	if t_1 <= -1e+195:
		tmp = t_2
	elif t_1 <= 5000.0:
		tmp = x
	else:
		tmp = t_2
	return tmp
function code(x, y, z, t, a)
	t_1 = Float64(Float64(y * Float64(z - t)) / a)
	t_2 = Float64(Float64(y / a) * z)
	tmp = 0.0
	if (t_1 <= -1e+195)
		tmp = t_2;
	elseif (t_1 <= 5000.0)
		tmp = x;
	else
		tmp = t_2;
	end
	return tmp
end
function tmp_2 = code(x, y, z, t, a)
	t_1 = (y * (z - t)) / a;
	t_2 = (y / a) * z;
	tmp = 0.0;
	if (t_1 <= -1e+195)
		tmp = t_2;
	elseif (t_1 <= 5000.0)
		tmp = x;
	else
		tmp = t_2;
	end
	tmp_2 = tmp;
end
code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]}, Block[{t$95$2 = N[(N[(y / a), $MachinePrecision] * z), $MachinePrecision]}, If[LessEqual[t$95$1, -1e+195], t$95$2, If[LessEqual[t$95$1, 5000.0], x, t$95$2]]]]
\begin{array}{l}

\\
\begin{array}{l}
t_1 := \frac{y \cdot \left(z - t\right)}{a}\\
t_2 := \frac{y}{a} \cdot z\\
\mathbf{if}\;t\_1 \leq -1 \cdot 10^{+195}:\\
\;\;\;\;t\_2\\

\mathbf{elif}\;t\_1 \leq 5000:\\
\;\;\;\;x\\

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


\end{array}
\end{array}
Derivation
  1. Split input into 2 regimes
  2. if (/.f64 (*.f64 y (-.f64 z t)) a) < -9.99999999999999977e194 or 5e3 < (/.f64 (*.f64 y (-.f64 z t)) a)

    1. Initial program 90.1%

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

      \[\leadsto \color{blue}{\frac{y \cdot z}{a}} \]
    4. Step-by-step derivation
      1. +-rgt-identityN/A

        \[\leadsto \color{blue}{\frac{y \cdot z}{a} + 0} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{y \cdot \frac{z}{a}} + 0 \]
      3. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, 0\right)} \]
      4. /-lowering-/.f6449.0

        \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z}{a}}, 0\right) \]
    5. Simplified49.0%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, 0\right)} \]
    6. Step-by-step derivation
      1. +-rgt-identityN/A

        \[\leadsto \color{blue}{y \cdot \frac{z}{a}} \]
      2. associate-*r/N/A

        \[\leadsto \color{blue}{\frac{y \cdot z}{a}} \]
      3. *-commutativeN/A

        \[\leadsto \frac{\color{blue}{z \cdot y}}{a} \]
      4. associate-/l*N/A

        \[\leadsto \color{blue}{z \cdot \frac{y}{a}} \]
      5. *-commutativeN/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot z} \]
      6. *-lowering-*.f64N/A

        \[\leadsto \color{blue}{\frac{y}{a} \cdot z} \]
      7. /-lowering-/.f6453.4

        \[\leadsto \color{blue}{\frac{y}{a}} \cdot z \]
    7. Applied egg-rr53.4%

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

    if -9.99999999999999977e194 < (/.f64 (*.f64 y (-.f64 z t)) a) < 5e3

    1. Initial program 99.8%

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

      \[\leadsto \color{blue}{x} \]
    4. Step-by-step derivation
      1. Simplified72.4%

        \[\leadsto \color{blue}{x} \]
    5. Recombined 2 regimes into one program.
    6. Add Preprocessing

    Alternative 6: 67.2% accurate, 1.0× speedup?

    \[\begin{array}{l} \\ \begin{array}{l} \mathbf{if}\;z \leq 2.65 \cdot 10^{+208}:\\ \;\;\;\;\mathsf{fma}\left(y, \frac{z}{a}, x\right)\\ \mathbf{else}:\\ \;\;\;\;\frac{y}{a} \cdot z\\ \end{array} \end{array} \]
    (FPCore (x y z t a)
     :precision binary64
     (if (<= z 2.65e+208) (fma y (/ z a) x) (* (/ y a) z)))
    double code(double x, double y, double z, double t, double a) {
    	double tmp;
    	if (z <= 2.65e+208) {
    		tmp = fma(y, (z / a), x);
    	} else {
    		tmp = (y / a) * z;
    	}
    	return tmp;
    }
    
    function code(x, y, z, t, a)
    	tmp = 0.0
    	if (z <= 2.65e+208)
    		tmp = fma(y, Float64(z / a), x);
    	else
    		tmp = Float64(Float64(y / a) * z);
    	end
    	return tmp
    end
    
    code[x_, y_, z_, t_, a_] := If[LessEqual[z, 2.65e+208], N[(y * N[(z / a), $MachinePrecision] + x), $MachinePrecision], N[(N[(y / a), $MachinePrecision] * z), $MachinePrecision]]
    
    \begin{array}{l}
    
    \\
    \begin{array}{l}
    \mathbf{if}\;z \leq 2.65 \cdot 10^{+208}:\\
    \;\;\;\;\mathsf{fma}\left(y, \frac{z}{a}, x\right)\\
    
    \mathbf{else}:\\
    \;\;\;\;\frac{y}{a} \cdot z\\
    
    
    \end{array}
    \end{array}
    
    Derivation
    1. Split input into 2 regimes
    2. if z < 2.65e208

      1. Initial program 94.5%

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

        \[\leadsto \color{blue}{x + \frac{y \cdot z}{a}} \]
      4. Step-by-step derivation
        1. +-commutativeN/A

          \[\leadsto \color{blue}{\frac{y \cdot z}{a} + x} \]
        2. associate-/l*N/A

          \[\leadsto \color{blue}{y \cdot \frac{z}{a}} + x \]
        3. accelerator-lowering-fma.f64N/A

          \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]
        4. /-lowering-/.f6463.0

          \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z}{a}}, x\right) \]
      5. Simplified63.0%

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]

      if 2.65e208 < z

      1. Initial program 92.3%

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

        \[\leadsto \color{blue}{\frac{y \cdot z}{a}} \]
      4. Step-by-step derivation
        1. +-rgt-identityN/A

          \[\leadsto \color{blue}{\frac{y \cdot z}{a} + 0} \]
        2. associate-/l*N/A

          \[\leadsto \color{blue}{y \cdot \frac{z}{a}} + 0 \]
        3. accelerator-lowering-fma.f64N/A

          \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, 0\right)} \]
        4. /-lowering-/.f6470.1

          \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z}{a}}, 0\right) \]
      5. Simplified70.1%

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, 0\right)} \]
      6. Step-by-step derivation
        1. +-rgt-identityN/A

          \[\leadsto \color{blue}{y \cdot \frac{z}{a}} \]
        2. associate-*r/N/A

          \[\leadsto \color{blue}{\frac{y \cdot z}{a}} \]
        3. *-commutativeN/A

          \[\leadsto \frac{\color{blue}{z \cdot y}}{a} \]
        4. associate-/l*N/A

          \[\leadsto \color{blue}{z \cdot \frac{y}{a}} \]
        5. *-commutativeN/A

          \[\leadsto \color{blue}{\frac{y}{a} \cdot z} \]
        6. *-lowering-*.f64N/A

          \[\leadsto \color{blue}{\frac{y}{a} \cdot z} \]
        7. /-lowering-/.f6491.9

          \[\leadsto \color{blue}{\frac{y}{a}} \cdot z \]
      7. Applied egg-rr91.9%

        \[\leadsto \color{blue}{\frac{y}{a} \cdot z} \]
    3. Recombined 2 regimes into one program.
    4. Add Preprocessing

    Alternative 7: 71.1% accurate, 1.3× speedup?

    \[\begin{array}{l} \\ \mathsf{fma}\left(\frac{y}{a}, z, x\right) \end{array} \]
    (FPCore (x y z t a) :precision binary64 (fma (/ y a) z x))
    double code(double x, double y, double z, double t, double a) {
    	return fma((y / a), z, x);
    }
    
    function code(x, y, z, t, a)
    	return fma(Float64(y / a), z, x)
    end
    
    code[x_, y_, z_, t_, a_] := N[(N[(y / a), $MachinePrecision] * z + x), $MachinePrecision]
    
    \begin{array}{l}
    
    \\
    \mathsf{fma}\left(\frac{y}{a}, z, x\right)
    \end{array}
    
    Derivation
    1. Initial program 94.3%

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

      \[\leadsto \color{blue}{x + \frac{y \cdot z}{a}} \]
    4. Step-by-step derivation
      1. +-commutativeN/A

        \[\leadsto \color{blue}{\frac{y \cdot z}{a} + x} \]
      2. associate-/l*N/A

        \[\leadsto \color{blue}{y \cdot \frac{z}{a}} + x \]
      3. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]
      4. /-lowering-/.f6464.1

        \[\leadsto \mathsf{fma}\left(y, \color{blue}{\frac{z}{a}}, x\right) \]
    5. Simplified64.1%

      \[\leadsto \color{blue}{\mathsf{fma}\left(y, \frac{z}{a}, x\right)} \]
    6. Step-by-step derivation
      1. clear-numN/A

        \[\leadsto y \cdot \color{blue}{\frac{1}{\frac{a}{z}}} + x \]
      2. associate-/r/N/A

        \[\leadsto y \cdot \color{blue}{\left(\frac{1}{a} \cdot z\right)} + x \]
      3. associate-*r*N/A

        \[\leadsto \color{blue}{\left(y \cdot \frac{1}{a}\right) \cdot z} + x \]
      4. div-invN/A

        \[\leadsto \color{blue}{\frac{y}{a}} \cdot z + x \]
      5. accelerator-lowering-fma.f64N/A

        \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z, x\right)} \]
      6. /-lowering-/.f6467.3

        \[\leadsto \mathsf{fma}\left(\color{blue}{\frac{y}{a}}, z, x\right) \]
    7. Applied egg-rr67.3%

      \[\leadsto \color{blue}{\mathsf{fma}\left(\frac{y}{a}, z, x\right)} \]
    8. Add Preprocessing

    Alternative 8: 39.5% accurate, 23.0× speedup?

    \[\begin{array}{l} \\ x \end{array} \]
    (FPCore (x y z t a) :precision binary64 x)
    double code(double x, double y, double z, double t, double a) {
    	return x;
    }
    
    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
    end function
    
    public static double code(double x, double y, double z, double t, double a) {
    	return x;
    }
    
    def code(x, y, z, t, a):
    	return x
    
    function code(x, y, z, t, a)
    	return x
    end
    
    function tmp = code(x, y, z, t, a)
    	tmp = x;
    end
    
    code[x_, y_, z_, t_, a_] := x
    
    \begin{array}{l}
    
    \\
    x
    \end{array}
    
    Derivation
    1. Initial program 94.3%

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

      \[\leadsto \color{blue}{x} \]
    4. Step-by-step derivation
      1. Simplified35.5%

        \[\leadsto \color{blue}{x} \]
      2. Add Preprocessing

      Developer Target 1: 99.2% accurate, 0.5× speedup?

      \[\begin{array}{l} \\ \begin{array}{l} t_1 := \frac{a}{z - t}\\ \mathbf{if}\;y < -1.0761266216389975 \cdot 10^{-10}:\\ \;\;\;\;x + \frac{1}{\frac{t\_1}{y}}\\ \mathbf{elif}\;y < 2.894426862792089 \cdot 10^{-49}:\\ \;\;\;\;x + \frac{y \cdot \left(z - t\right)}{a}\\ \mathbf{else}:\\ \;\;\;\;x + \frac{y}{t\_1}\\ \end{array} \end{array} \]
      (FPCore (x y z t a)
       :precision binary64
       (let* ((t_1 (/ a (- z t))))
         (if (< y -1.0761266216389975e-10)
           (+ x (/ 1.0 (/ t_1 y)))
           (if (< y 2.894426862792089e-49)
             (+ x (/ (* y (- z t)) a))
             (+ x (/ y t_1))))))
      double code(double x, double y, double z, double t, double a) {
      	double t_1 = a / (z - t);
      	double tmp;
      	if (y < -1.0761266216389975e-10) {
      		tmp = x + (1.0 / (t_1 / y));
      	} else if (y < 2.894426862792089e-49) {
      		tmp = x + ((y * (z - t)) / a);
      	} else {
      		tmp = x + (y / t_1);
      	}
      	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) :: t_1
          real(8) :: tmp
          t_1 = a / (z - t)
          if (y < (-1.0761266216389975d-10)) then
              tmp = x + (1.0d0 / (t_1 / y))
          else if (y < 2.894426862792089d-49) then
              tmp = x + ((y * (z - t)) / a)
          else
              tmp = x + (y / t_1)
          end if
          code = tmp
      end function
      
      public static double code(double x, double y, double z, double t, double a) {
      	double t_1 = a / (z - t);
      	double tmp;
      	if (y < -1.0761266216389975e-10) {
      		tmp = x + (1.0 / (t_1 / y));
      	} else if (y < 2.894426862792089e-49) {
      		tmp = x + ((y * (z - t)) / a);
      	} else {
      		tmp = x + (y / t_1);
      	}
      	return tmp;
      }
      
      def code(x, y, z, t, a):
      	t_1 = a / (z - t)
      	tmp = 0
      	if y < -1.0761266216389975e-10:
      		tmp = x + (1.0 / (t_1 / y))
      	elif y < 2.894426862792089e-49:
      		tmp = x + ((y * (z - t)) / a)
      	else:
      		tmp = x + (y / t_1)
      	return tmp
      
      function code(x, y, z, t, a)
      	t_1 = Float64(a / Float64(z - t))
      	tmp = 0.0
      	if (y < -1.0761266216389975e-10)
      		tmp = Float64(x + Float64(1.0 / Float64(t_1 / y)));
      	elseif (y < 2.894426862792089e-49)
      		tmp = Float64(x + Float64(Float64(y * Float64(z - t)) / a));
      	else
      		tmp = Float64(x + Float64(y / t_1));
      	end
      	return tmp
      end
      
      function tmp_2 = code(x, y, z, t, a)
      	t_1 = a / (z - t);
      	tmp = 0.0;
      	if (y < -1.0761266216389975e-10)
      		tmp = x + (1.0 / (t_1 / y));
      	elseif (y < 2.894426862792089e-49)
      		tmp = x + ((y * (z - t)) / a);
      	else
      		tmp = x + (y / t_1);
      	end
      	tmp_2 = tmp;
      end
      
      code[x_, y_, z_, t_, a_] := Block[{t$95$1 = N[(a / N[(z - t), $MachinePrecision]), $MachinePrecision]}, If[Less[y, -1.0761266216389975e-10], N[(x + N[(1.0 / N[(t$95$1 / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], If[Less[y, 2.894426862792089e-49], N[(x + N[(N[(y * N[(z - t), $MachinePrecision]), $MachinePrecision] / a), $MachinePrecision]), $MachinePrecision], N[(x + N[(y / t$95$1), $MachinePrecision]), $MachinePrecision]]]]
      
      \begin{array}{l}
      
      \\
      \begin{array}{l}
      t_1 := \frac{a}{z - t}\\
      \mathbf{if}\;y < -1.0761266216389975 \cdot 10^{-10}:\\
      \;\;\;\;x + \frac{1}{\frac{t\_1}{y}}\\
      
      \mathbf{elif}\;y < 2.894426862792089 \cdot 10^{-49}:\\
      \;\;\;\;x + \frac{y \cdot \left(z - t\right)}{a}\\
      
      \mathbf{else}:\\
      \;\;\;\;x + \frac{y}{t\_1}\\
      
      
      \end{array}
      \end{array}
      

      Reproduce

      ?
      herbie shell --seed 2024196 
      (FPCore (x y z t a)
        :name "Optimisation.CirclePacking:place from circle-packing-0.1.0.4, E"
        :precision binary64
      
        :alt
        (! :herbie-platform default (if (< y -430450648655599/4000000000000000000000000) (+ x (/ 1 (/ (/ a (- z t)) y))) (if (< y 2894426862792089/10000000000000000000000000000000000000000000000000000000000000000) (+ x (/ (* y (- z t)) a)) (+ x (/ y (/ a (- z t)))))))
      
        (+ x (/ (* y (- z t)) a)))