
(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 7 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 (* 0.3333333333333333 (cbrt (pow (acos (* (/ x (* y z)) (* 0.05555555555555555 (sqrt t)))) 3.0))))
double code(double x, double y, double z, double t) {
return 0.3333333333333333 * cbrt(pow(acos(((x / (y * z)) * (0.05555555555555555 * sqrt(t)))), 3.0));
}
public static double code(double x, double y, double z, double t) {
return 0.3333333333333333 * Math.cbrt(Math.pow(Math.acos(((x / (y * z)) * (0.05555555555555555 * Math.sqrt(t)))), 3.0));
}
function code(x, y, z, t) return Float64(0.3333333333333333 * cbrt((acos(Float64(Float64(x / Float64(y * z)) * Float64(0.05555555555555555 * sqrt(t)))) ^ 3.0))) end
code[x_, y_, z_, t_] := N[(0.3333333333333333 * N[Power[N[Power[N[ArcCos[N[(N[(x / N[(y * z), $MachinePrecision]), $MachinePrecision] * N[(0.05555555555555555 * N[Sqrt[t], $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], 3.0], $MachinePrecision], 1/3], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.3333333333333333 \cdot \sqrt[3]{{\cos^{-1} \left(\frac{x}{y \cdot z} \cdot \left(0.05555555555555555 \cdot \sqrt{t}\right)\right)}^{3}}
\end{array}
Initial program 97.8%
Simplified98.1%
add-cbrt-cube99.6%
pow399.6%
*-commutative99.6%
associate-*l*99.6%
associate-/l/99.7%
*-commutative99.7%
Applied egg-rr99.7%
(FPCore (x y z t) :precision binary64 (+ -1.0 (fma 0.3333333333333333 (acos (/ (* (sqrt t) (* x 0.05555555555555555)) (* y z))) 1.0)))
double code(double x, double y, double z, double t) {
return -1.0 + fma(0.3333333333333333, acos(((sqrt(t) * (x * 0.05555555555555555)) / (y * z))), 1.0);
}
function code(x, y, z, t) return Float64(-1.0 + fma(0.3333333333333333, acos(Float64(Float64(sqrt(t) * Float64(x * 0.05555555555555555)) / Float64(y * z))), 1.0)) end
code[x_, y_, z_, t_] := N[(-1.0 + N[(0.3333333333333333 * N[ArcCos[N[(N[(N[Sqrt[t], $MachinePrecision] * N[(x * 0.05555555555555555), $MachinePrecision]), $MachinePrecision] / N[(y * z), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \mathsf{fma}\left(0.3333333333333333, \cos^{-1} \left(\frac{\sqrt{t} \cdot \left(x \cdot 0.05555555555555555\right)}{y \cdot z}\right), 1\right)
\end{array}
Initial program 97.8%
Simplified98.1%
clear-num98.1%
un-div-inv98.1%
div-inv97.9%
clear-num98.3%
Applied egg-rr98.3%
expm1-log1p-u98.3%
expm1-undefine99.8%
metadata-eval99.8%
associate-*l/99.8%
associate-*r/99.7%
*-commutative99.7%
clear-num99.7%
associate-*l/99.7%
*-commutative99.7%
Applied egg-rr99.7%
sub-neg99.7%
metadata-eval99.7%
+-commutative99.7%
log1p-undefine97.3%
rem-exp-log97.3%
+-commutative97.3%
fma-define99.7%
*-commutative99.7%
times-frac99.3%
Simplified99.3%
*-commutative99.3%
frac-times99.7%
associate-*l/99.6%
Applied egg-rr99.6%
Final simplification99.6%
(FPCore (x y z t) :precision binary64 (+ -1.0 (fma 0.3333333333333333 (acos (* (sqrt t) (* (/ x z) (/ 0.05555555555555555 y)))) 1.0)))
double code(double x, double y, double z, double t) {
return -1.0 + fma(0.3333333333333333, acos((sqrt(t) * ((x / z) * (0.05555555555555555 / y)))), 1.0);
}
function code(x, y, z, t) return Float64(-1.0 + fma(0.3333333333333333, acos(Float64(sqrt(t) * Float64(Float64(x / z) * Float64(0.05555555555555555 / y)))), 1.0)) end
code[x_, y_, z_, t_] := N[(-1.0 + N[(0.3333333333333333 * N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] * N[(N[(x / z), $MachinePrecision] * N[(0.05555555555555555 / y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \mathsf{fma}\left(0.3333333333333333, \cos^{-1} \left(\sqrt{t} \cdot \left(\frac{x}{z} \cdot \frac{0.05555555555555555}{y}\right)\right), 1\right)
\end{array}
Initial program 97.8%
Simplified98.1%
clear-num98.1%
un-div-inv98.1%
div-inv97.9%
clear-num98.3%
Applied egg-rr98.3%
expm1-log1p-u98.3%
expm1-undefine99.8%
metadata-eval99.8%
associate-*l/99.8%
associate-*r/99.7%
*-commutative99.7%
clear-num99.7%
associate-*l/99.7%
*-commutative99.7%
Applied egg-rr99.7%
sub-neg99.7%
metadata-eval99.7%
+-commutative99.7%
log1p-undefine97.3%
rem-exp-log97.3%
+-commutative97.3%
fma-define99.7%
*-commutative99.7%
times-frac99.3%
Simplified99.3%
(FPCore (x y z t) :precision binary64 (* 0.3333333333333333 (acos (* (sqrt t) (/ 0.05555555555555555 (* z (/ y x)))))))
double code(double x, double y, double z, double t) {
return 0.3333333333333333 * acos((sqrt(t) * (0.05555555555555555 / (z * (y / x)))));
}
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((sqrt(t) * (0.05555555555555555d0 / (z * (y / x)))))
end function
public static double code(double x, double y, double z, double t) {
return 0.3333333333333333 * Math.acos((Math.sqrt(t) * (0.05555555555555555 / (z * (y / x)))));
}
def code(x, y, z, t): return 0.3333333333333333 * math.acos((math.sqrt(t) * (0.05555555555555555 / (z * (y / x)))))
function code(x, y, z, t) return Float64(0.3333333333333333 * acos(Float64(sqrt(t) * Float64(0.05555555555555555 / Float64(z * Float64(y / x)))))) end
function tmp = code(x, y, z, t) tmp = 0.3333333333333333 * acos((sqrt(t) * (0.05555555555555555 / (z * (y / x))))); end
code[x_, y_, z_, t_] := N[(0.3333333333333333 * N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] * N[(0.05555555555555555 / N[(z * N[(y / x), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.3333333333333333 \cdot \cos^{-1} \left(\sqrt{t} \cdot \frac{0.05555555555555555}{z \cdot \frac{y}{x}}\right)
\end{array}
Initial program 97.8%
Simplified98.1%
clear-num98.1%
un-div-inv98.1%
div-inv97.9%
clear-num98.3%
Applied egg-rr98.3%
Final simplification98.3%
(FPCore (x y z t) :precision binary64 (* 0.3333333333333333 (acos (* (sqrt t) (* 0.05555555555555555 (/ (/ x y) z))))))
double code(double x, double y, double z, double t) {
return 0.3333333333333333 * acos((sqrt(t) * (0.05555555555555555 * ((x / y) / z))));
}
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((sqrt(t) * (0.05555555555555555d0 * ((x / y) / z))))
end function
public static double code(double x, double y, double z, double t) {
return 0.3333333333333333 * Math.acos((Math.sqrt(t) * (0.05555555555555555 * ((x / y) / z))));
}
def code(x, y, z, t): return 0.3333333333333333 * math.acos((math.sqrt(t) * (0.05555555555555555 * ((x / y) / z))))
function code(x, y, z, t) return Float64(0.3333333333333333 * acos(Float64(sqrt(t) * Float64(0.05555555555555555 * Float64(Float64(x / y) / z))))) end
function tmp = code(x, y, z, t) tmp = 0.3333333333333333 * acos((sqrt(t) * (0.05555555555555555 * ((x / y) / z)))); end
code[x_, y_, z_, t_] := N[(0.3333333333333333 * N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] * N[(0.05555555555555555 * N[(N[(x / y), $MachinePrecision] / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.3333333333333333 \cdot \cos^{-1} \left(\sqrt{t} \cdot \left(0.05555555555555555 \cdot \frac{\frac{x}{y}}{z}\right)\right)
\end{array}
Initial program 97.8%
Simplified98.1%
Final simplification98.1%
(FPCore (x y z t) :precision binary64 (+ -1.0 (fma 0.3333333333333333 (acos 0.0) 1.0)))
double code(double x, double y, double z, double t) {
return -1.0 + fma(0.3333333333333333, acos(0.0), 1.0);
}
function code(x, y, z, t) return Float64(-1.0 + fma(0.3333333333333333, acos(0.0), 1.0)) end
code[x_, y_, z_, t_] := N[(-1.0 + N[(0.3333333333333333 * N[ArcCos[0.0], $MachinePrecision] + 1.0), $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
-1 + \mathsf{fma}\left(0.3333333333333333, \cos^{-1} 0, 1\right)
\end{array}
Initial program 97.8%
Simplified98.1%
clear-num98.1%
un-div-inv98.1%
div-inv97.9%
clear-num98.3%
Applied egg-rr98.3%
associate-*l/98.3%
div-inv98.3%
associate-*r/98.2%
*-commutative98.2%
clear-num98.2%
*-commutative98.2%
expm1-log1p-u98.2%
expm1-undefine98.2%
associate-*r*98.2%
associate-*l/98.2%
*-commutative98.2%
Applied egg-rr98.2%
sub-neg98.2%
metadata-eval98.2%
+-commutative98.2%
log1p-undefine98.2%
rem-exp-log98.2%
+-commutative98.2%
*-commutative98.2%
fma-define98.2%
times-frac97.8%
Simplified97.8%
Taylor expanded in x around 0 95.9%
expm1-log1p-u95.9%
expm1-undefine97.4%
metadata-eval97.4%
Applied egg-rr97.4%
sub-neg97.4%
metadata-eval97.4%
+-commutative97.4%
log1p-undefine95.1%
rem-exp-log95.1%
+-commutative95.1%
fma-define97.4%
Simplified97.4%
(FPCore (x y z t) :precision binary64 (* 0.3333333333333333 (acos 0.0)))
double code(double x, double y, double z, double t) {
return 0.3333333333333333 * acos(0.0);
}
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 = 0.3333333333333333d0 * acos(0.0d0)
end function
public static double code(double x, double y, double z, double t) {
return 0.3333333333333333 * Math.acos(0.0);
}
def code(x, y, z, t): return 0.3333333333333333 * math.acos(0.0)
function code(x, y, z, t) return Float64(0.3333333333333333 * acos(0.0)) end
function tmp = code(x, y, z, t) tmp = 0.3333333333333333 * acos(0.0); end
code[x_, y_, z_, t_] := N[(0.3333333333333333 * N[ArcCos[0.0], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
\\
0.3333333333333333 \cdot \cos^{-1} 0
\end{array}
Initial program 97.8%
Simplified98.1%
clear-num98.1%
un-div-inv98.1%
div-inv97.9%
clear-num98.3%
Applied egg-rr98.3%
associate-*l/98.3%
div-inv98.3%
associate-*r/98.2%
*-commutative98.2%
clear-num98.2%
*-commutative98.2%
expm1-log1p-u98.2%
expm1-undefine98.2%
associate-*r*98.2%
associate-*l/98.2%
*-commutative98.2%
Applied egg-rr98.2%
sub-neg98.2%
metadata-eval98.2%
+-commutative98.2%
log1p-undefine98.2%
rem-exp-log98.2%
+-commutative98.2%
*-commutative98.2%
fma-define98.2%
times-frac97.8%
Simplified97.8%
Taylor expanded in x around 0 95.9%
pow195.9%
metadata-eval95.9%
Applied egg-rr95.9%
unpow195.9%
Simplified95.9%
(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 2024133
(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)))))