
(FPCore (x y z t) :precision binary64 (* (/ 1.0 3.0) (acos (* (/ (* 3.0 (/ x (* y 27.0))) (* z 2.0)) (sqrt t)))))
double code(double x, double y, double z, double t) {
return (1.0 / 3.0) * acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * sqrt(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 / 3.0d0) * acos((((3.0d0 * (x / (y * 27.0d0))) / (z * 2.0d0)) * sqrt(t)))
end function
public static double code(double x, double y, double z, double t) {
return (1.0 / 3.0) * Math.acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * Math.sqrt(t)));
}
def code(x, y, z, t): return (1.0 / 3.0) * math.acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * math.sqrt(t)))
function code(x, y, z, t) return Float64(Float64(1.0 / 3.0) * acos(Float64(Float64(Float64(3.0 * Float64(x / Float64(y * 27.0))) / Float64(z * 2.0)) * sqrt(t)))) end
function tmp = code(x, y, z, t) tmp = (1.0 / 3.0) * acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * sqrt(t))); end
code[x_, y_, z_, t_] := N[(N[(1.0 / 3.0), $MachinePrecision] * N[ArcCos[N[(N[(N[(3.0 * N[(x / N[(y * 27.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(z * 2.0), $MachinePrecision]), $MachinePrecision] * N[Sqrt[t], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{3} \cdot \cos^{-1} \left(\frac{3 \cdot \frac{x}{y \cdot 27}}{z \cdot 2} \cdot \sqrt{t}\right)
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 3 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (x y z t) :precision binary64 (* (/ 1.0 3.0) (acos (* (/ (* 3.0 (/ x (* y 27.0))) (* z 2.0)) (sqrt t)))))
double code(double x, double y, double z, double t) {
return (1.0 / 3.0) * acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * sqrt(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 / 3.0d0) * acos((((3.0d0 * (x / (y * 27.0d0))) / (z * 2.0d0)) * sqrt(t)))
end function
public static double code(double x, double y, double z, double t) {
return (1.0 / 3.0) * Math.acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * Math.sqrt(t)));
}
def code(x, y, z, t): return (1.0 / 3.0) * math.acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * math.sqrt(t)))
function code(x, y, z, t) return Float64(Float64(1.0 / 3.0) * acos(Float64(Float64(Float64(3.0 * Float64(x / Float64(y * 27.0))) / Float64(z * 2.0)) * sqrt(t)))) end
function tmp = code(x, y, z, t) tmp = (1.0 / 3.0) * acos((((3.0 * (x / (y * 27.0))) / (z * 2.0)) * sqrt(t))); end
code[x_, y_, z_, t_] := N[(N[(1.0 / 3.0), $MachinePrecision] * N[ArcCos[N[(N[(N[(3.0 * N[(x / N[(y * 27.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision] / N[(z * 2.0), $MachinePrecision]), $MachinePrecision] * N[Sqrt[t], $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
\frac{1}{3} \cdot \cos^{-1} \left(\frac{3 \cdot \frac{x}{y \cdot 27}}{z \cdot 2} \cdot \sqrt{t}\right)
\end{array}
(FPCore (x y z t)
:precision binary64
(let* ((t_1 (acos (/ (sqrt t) (/ z (/ (/ x y) 18.0)))))
(t_2 (+ (/ (* PI PI) 4.0) (* t_1 (+ t_1 (/ PI 2.0))))))
(*
(/
(+ (* PI t_2) (* (- (/ (pow (sqrt PI) 6.0) 8.0) (pow t_1 3.0)) -2.0))
t_2)
0.16666666666666666)))
double code(double x, double y, double z, double t) {
double t_1 = acos((sqrt(t) / (z / ((x / y) / 18.0))));
double t_2 = ((((double) M_PI) * ((double) M_PI)) / 4.0) + (t_1 * (t_1 + (((double) M_PI) / 2.0)));
return (((((double) M_PI) * t_2) + (((pow(sqrt(((double) M_PI)), 6.0) / 8.0) - pow(t_1, 3.0)) * -2.0)) / t_2) * 0.16666666666666666;
}
public static double code(double x, double y, double z, double t) {
double t_1 = Math.acos((Math.sqrt(t) / (z / ((x / y) / 18.0))));
double t_2 = ((Math.PI * Math.PI) / 4.0) + (t_1 * (t_1 + (Math.PI / 2.0)));
return (((Math.PI * t_2) + (((Math.pow(Math.sqrt(Math.PI), 6.0) / 8.0) - Math.pow(t_1, 3.0)) * -2.0)) / t_2) * 0.16666666666666666;
}
def code(x, y, z, t): t_1 = math.acos((math.sqrt(t) / (z / ((x / y) / 18.0)))) t_2 = ((math.pi * math.pi) / 4.0) + (t_1 * (t_1 + (math.pi / 2.0))) return (((math.pi * t_2) + (((math.pow(math.sqrt(math.pi), 6.0) / 8.0) - math.pow(t_1, 3.0)) * -2.0)) / t_2) * 0.16666666666666666
function code(x, y, z, t) t_1 = acos(Float64(sqrt(t) / Float64(z / Float64(Float64(x / y) / 18.0)))) t_2 = Float64(Float64(Float64(pi * pi) / 4.0) + Float64(t_1 * Float64(t_1 + Float64(pi / 2.0)))) return Float64(Float64(Float64(Float64(pi * t_2) + Float64(Float64(Float64((sqrt(pi) ^ 6.0) / 8.0) - (t_1 ^ 3.0)) * -2.0)) / t_2) * 0.16666666666666666) end
function tmp = code(x, y, z, t) t_1 = acos((sqrt(t) / (z / ((x / y) / 18.0)))); t_2 = ((pi * pi) / 4.0) + (t_1 * (t_1 + (pi / 2.0))); tmp = (((pi * t_2) + ((((sqrt(pi) ^ 6.0) / 8.0) - (t_1 ^ 3.0)) * -2.0)) / t_2) * 0.16666666666666666; end
code[x_, y_, z_, t_] := Block[{t$95$1 = N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] / N[(z / N[(N[(x / y), $MachinePrecision] / 18.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]}, Block[{t$95$2 = N[(N[(N[(Pi * Pi), $MachinePrecision] / 4.0), $MachinePrecision] + N[(t$95$1 * N[(t$95$1 + N[(Pi / 2.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, N[(N[(N[(N[(Pi * t$95$2), $MachinePrecision] + N[(N[(N[(N[Power[N[Sqrt[Pi], $MachinePrecision], 6.0], $MachinePrecision] / 8.0), $MachinePrecision] - N[Power[t$95$1, 3.0], $MachinePrecision]), $MachinePrecision] * -2.0), $MachinePrecision]), $MachinePrecision] / t$95$2), $MachinePrecision] * 0.16666666666666666), $MachinePrecision]]]
\begin{array}{l}
\\
\begin{array}{l}
t_1 := \cos^{-1} \left(\frac{\sqrt{t}}{\frac{z}{\frac{\frac{x}{y}}{18}}}\right)\\
t_2 := \frac{\pi \cdot \pi}{4} + t\_1 \cdot \left(t\_1 + \frac{\pi}{2}\right)\\
\frac{\pi \cdot t\_2 + \left(\frac{{\left(\sqrt{\pi}\right)}^{6}}{8} - {t\_1}^{3}\right) \cdot -2}{t\_2} \cdot 0.16666666666666666
\end{array}
\end{array}
Initial program 98.5%
metadata-evalN/A
*-commutativeN/A
*-lowering-*.f64N/A
Applied egg-rr98.5%
Applied egg-rr98.5%
Applied egg-rr98.5%
cube-unmultN/A
metadata-evalN/A
sqrt-pow2N/A
pow-lowering-pow.f64N/A
sqrt-lowering-sqrt.f64N/A
PI-lowering-PI.f64100.0%
Applied egg-rr100.0%
(FPCore (x y z t) :precision binary64 (* (acos (/ (sqrt t) (* z (/ 18.0 (/ x y))))) 0.3333333333333333))
double code(double x, double y, double z, double t) {
return acos((sqrt(t) / (z * (18.0 / (x / y))))) * 0.3333333333333333;
}
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 = acos((sqrt(t) / (z * (18.0d0 / (x / y))))) * 0.3333333333333333d0
end function
public static double code(double x, double y, double z, double t) {
return Math.acos((Math.sqrt(t) / (z * (18.0 / (x / y))))) * 0.3333333333333333;
}
def code(x, y, z, t): return math.acos((math.sqrt(t) / (z * (18.0 / (x / y))))) * 0.3333333333333333
function code(x, y, z, t) return Float64(acos(Float64(sqrt(t) / Float64(z * Float64(18.0 / Float64(x / y))))) * 0.3333333333333333) end
function tmp = code(x, y, z, t) tmp = acos((sqrt(t) / (z * (18.0 / (x / y))))) * 0.3333333333333333; end
code[x_, y_, z_, t_] := N[(N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] / N[(z * N[(18.0 / N[(x / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * 0.3333333333333333), $MachinePrecision]
\begin{array}{l}
\\
\cos^{-1} \left(\frac{\sqrt{t}}{z \cdot \frac{18}{\frac{x}{y}}}\right) \cdot 0.3333333333333333
\end{array}
Initial program 98.5%
metadata-evalN/A
*-commutativeN/A
*-lowering-*.f64N/A
Applied egg-rr98.5%
(FPCore (x y z t) :precision binary64 (* 0.3333333333333333 (acos (* 0.05555555555555555 (/ (/ (* (sqrt t) x) z) y)))))
double code(double x, double y, double z, double t) {
return 0.3333333333333333 * acos((0.05555555555555555 * (((sqrt(t) * x) / z) / 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 = 0.3333333333333333d0 * acos((0.05555555555555555d0 * (((sqrt(t) * x) / z) / y)))
end function
public static double code(double x, double y, double z, double t) {
return 0.3333333333333333 * Math.acos((0.05555555555555555 * (((Math.sqrt(t) * x) / z) / y)));
}
def code(x, y, z, t): return 0.3333333333333333 * math.acos((0.05555555555555555 * (((math.sqrt(t) * x) / z) / y)))
function code(x, y, z, t) return Float64(0.3333333333333333 * acos(Float64(0.05555555555555555 * Float64(Float64(Float64(sqrt(t) * x) / z) / y)))) end
function tmp = code(x, y, z, t) tmp = 0.3333333333333333 * acos((0.05555555555555555 * (((sqrt(t) * x) / z) / y))); end
code[x_, y_, z_, t_] := N[(0.3333333333333333 * N[ArcCos[N[(0.05555555555555555 * N[(N[(N[(N[Sqrt[t], $MachinePrecision] * x), $MachinePrecision] / z), $MachinePrecision] / y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.3333333333333333 \cdot \cos^{-1} \left(0.05555555555555555 \cdot \frac{\frac{\sqrt{t} \cdot x}{z}}{y}\right)
\end{array}
Initial program 98.5%
*-lowering-*.f64N/A
metadata-evalN/A
acos-lowering-acos.f64N/A
associate-*l/N/A
*-commutativeN/A
associate-*r/N/A
*-commutativeN/A
times-fracN/A
associate-*l*N/A
times-fracN/A
associate-*r/N/A
*-lowering-*.f64N/A
metadata-evalN/A
metadata-evalN/A
associate-*l/N/A
associate-/l*N/A
*-commutativeN/A
associate-*r/N/A
Simplified96.3%
Final simplification96.3%
(FPCore (x y z t) :precision binary64 (/ (acos (* (/ (/ x 27.0) (* y z)) (/ (sqrt t) (/ 2.0 3.0)))) 3.0))
double code(double x, double y, double z, double t) {
return acos((((x / 27.0) / (y * z)) * (sqrt(t) / (2.0 / 3.0)))) / 3.0;
}
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 = acos((((x / 27.0d0) / (y * z)) * (sqrt(t) / (2.0d0 / 3.0d0)))) / 3.0d0
end function
public static double code(double x, double y, double z, double t) {
return Math.acos((((x / 27.0) / (y * z)) * (Math.sqrt(t) / (2.0 / 3.0)))) / 3.0;
}
def code(x, y, z, t): return math.acos((((x / 27.0) / (y * z)) * (math.sqrt(t) / (2.0 / 3.0)))) / 3.0
function code(x, y, z, t) return Float64(acos(Float64(Float64(Float64(x / 27.0) / Float64(y * z)) * Float64(sqrt(t) / Float64(2.0 / 3.0)))) / 3.0) end
function tmp = code(x, y, z, t) tmp = acos((((x / 27.0) / (y * z)) * (sqrt(t) / (2.0 / 3.0)))) / 3.0; end
code[x_, y_, z_, t_] := N[(N[ArcCos[N[(N[(N[(x / 27.0), $MachinePrecision] / N[(y * z), $MachinePrecision]), $MachinePrecision] * N[(N[Sqrt[t], $MachinePrecision] / N[(2.0 / 3.0), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] / 3.0), $MachinePrecision]
\begin{array}{l}
\\
\frac{\cos^{-1} \left(\frac{\frac{x}{27}}{y \cdot z} \cdot \frac{\sqrt{t}}{\frac{2}{3}}\right)}{3}
\end{array}
herbie shell --seed 2024145
(FPCore (x y z t)
:name "Diagrams.Solve.Polynomial:cubForm from diagrams-solve-0.1, D"
:precision binary64
:alt
(! :herbie-platform default (/ (acos (* (/ (/ x 27) (* y z)) (/ (sqrt t) (/ 2 3)))) 3))
(* (/ 1.0 3.0) (acos (* (/ (* 3.0 (/ x (* y 27.0))) (* z 2.0)) (sqrt t)))))