
(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}
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. (FPCore (x y z t) :precision binary64 (pow (* (pow (acos (* (/ (* 0.05555555555555555 (sqrt t)) z) (/ x y))) -1.0) 3.0) -1.0))
assert(x < y && y < z && z < t);
double code(double x, double y, double z, double t) {
return pow((pow(acos((((0.05555555555555555 * sqrt(t)) / z) * (x / y))), -1.0) * 3.0), -1.0);
}
NOTE: x, y, z, and t should be sorted in increasing order before calling this function.
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((((0.05555555555555555d0 * sqrt(t)) / z) * (x / y))) ** (-1.0d0)) * 3.0d0) ** (-1.0d0)
end function
assert x < y && y < z && z < t;
public static double code(double x, double y, double z, double t) {
return Math.pow((Math.pow(Math.acos((((0.05555555555555555 * Math.sqrt(t)) / z) * (x / y))), -1.0) * 3.0), -1.0);
}
[x, y, z, t] = sort([x, y, z, t]) def code(x, y, z, t): return math.pow((math.pow(math.acos((((0.05555555555555555 * math.sqrt(t)) / z) * (x / y))), -1.0) * 3.0), -1.0)
x, y, z, t = sort([x, y, z, t]) function code(x, y, z, t) return Float64((acos(Float64(Float64(Float64(0.05555555555555555 * sqrt(t)) / z) * Float64(x / y))) ^ -1.0) * 3.0) ^ -1.0 end
x, y, z, t = num2cell(sort([x, y, z, t])){:}
function tmp = code(x, y, z, t)
tmp = ((acos((((0.05555555555555555 * sqrt(t)) / z) * (x / y))) ^ -1.0) * 3.0) ^ -1.0;
end
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. code[x_, y_, z_, t_] := N[Power[N[(N[Power[N[ArcCos[N[(N[(N[(0.05555555555555555 * N[Sqrt[t], $MachinePrecision]), $MachinePrecision] / z), $MachinePrecision] * N[(x / y), $MachinePrecision]), $MachinePrecision]], $MachinePrecision], -1.0], $MachinePrecision] * 3.0), $MachinePrecision], -1.0], $MachinePrecision]
\begin{array}{l}
[x, y, z, t] = \mathsf{sort}([x, y, z, t])\\
\\
{\left({\cos^{-1} \left(\frac{0.05555555555555555 \cdot \sqrt{t}}{z} \cdot \frac{x}{y}\right)}^{-1} \cdot 3\right)}^{-1}
\end{array}
Initial program 98.5%
lift-*.f64N/A
*-commutativeN/A
lower-*.f6498.5
Applied rewrites98.5%
Applied rewrites99.6%
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. (FPCore (x y z t) :precision binary64 (* (acos (* (sqrt t) (* 0.05555555555555555 (/ (/ x y) z)))) 0.3333333333333333))
assert(x < y && y < z && z < t);
double code(double x, double y, double z, double t) {
return acos((sqrt(t) * (0.05555555555555555 * ((x / y) / z)))) * 0.3333333333333333;
}
NOTE: x, y, z, and t should be sorted in increasing order before calling this function.
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) * (0.05555555555555555d0 * ((x / y) / z)))) * 0.3333333333333333d0
end function
assert x < y && y < z && z < t;
public static double code(double x, double y, double z, double t) {
return Math.acos((Math.sqrt(t) * (0.05555555555555555 * ((x / y) / z)))) * 0.3333333333333333;
}
[x, y, z, t] = sort([x, y, z, t]) def code(x, y, z, t): return math.acos((math.sqrt(t) * (0.05555555555555555 * ((x / y) / z)))) * 0.3333333333333333
x, y, z, t = sort([x, y, z, t]) function code(x, y, z, t) return Float64(acos(Float64(sqrt(t) * Float64(0.05555555555555555 * Float64(Float64(x / y) / z)))) * 0.3333333333333333) end
x, y, z, t = num2cell(sort([x, y, z, t])){:}
function tmp = code(x, y, z, t)
tmp = acos((sqrt(t) * (0.05555555555555555 * ((x / y) / z)))) * 0.3333333333333333;
end
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. code[x_, y_, z_, t_] := N[(N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] * N[(0.05555555555555555 * N[(N[(x / y), $MachinePrecision] / z), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * 0.3333333333333333), $MachinePrecision]
\begin{array}{l}
[x, y, z, t] = \mathsf{sort}([x, y, z, t])\\
\\
\cos^{-1} \left(\sqrt{t} \cdot \left(0.05555555555555555 \cdot \frac{\frac{x}{y}}{z}\right)\right) \cdot 0.3333333333333333
\end{array}
Initial program 98.5%
lift-*.f64N/A
*-commutativeN/A
lower-*.f6498.5
Applied rewrites98.5%
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. (FPCore (x y z t) :precision binary64 (* (acos (* (sqrt t) (/ (* x 0.05555555555555555) (* z y)))) 0.3333333333333333))
assert(x < y && y < z && z < t);
double code(double x, double y, double z, double t) {
return acos((sqrt(t) * ((x * 0.05555555555555555) / (z * y)))) * 0.3333333333333333;
}
NOTE: x, y, z, and t should be sorted in increasing order before calling this function.
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) * ((x * 0.05555555555555555d0) / (z * y)))) * 0.3333333333333333d0
end function
assert x < y && y < z && z < t;
public static double code(double x, double y, double z, double t) {
return Math.acos((Math.sqrt(t) * ((x * 0.05555555555555555) / (z * y)))) * 0.3333333333333333;
}
[x, y, z, t] = sort([x, y, z, t]) def code(x, y, z, t): return math.acos((math.sqrt(t) * ((x * 0.05555555555555555) / (z * y)))) * 0.3333333333333333
x, y, z, t = sort([x, y, z, t]) function code(x, y, z, t) return Float64(acos(Float64(sqrt(t) * Float64(Float64(x * 0.05555555555555555) / Float64(z * y)))) * 0.3333333333333333) end
x, y, z, t = num2cell(sort([x, y, z, t])){:}
function tmp = code(x, y, z, t)
tmp = acos((sqrt(t) * ((x * 0.05555555555555555) / (z * y)))) * 0.3333333333333333;
end
NOTE: x, y, z, and t should be sorted in increasing order before calling this function. code[x_, y_, z_, t_] := N[(N[ArcCos[N[(N[Sqrt[t], $MachinePrecision] * N[(N[(x * 0.05555555555555555), $MachinePrecision] / N[(z * y), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] * 0.3333333333333333), $MachinePrecision]
\begin{array}{l}
[x, y, z, t] = \mathsf{sort}([x, y, z, t])\\
\\
\cos^{-1} \left(\sqrt{t} \cdot \frac{x \cdot 0.05555555555555555}{z \cdot y}\right) \cdot 0.3333333333333333
\end{array}
Initial program 98.5%
lift-*.f64N/A
*-commutativeN/A
lower-*.f6498.5
Applied rewrites98.5%
lift-*.f64N/A
*-commutativeN/A
lift-/.f64N/A
lift-/.f64N/A
associate-/l/N/A
associate-*l/N/A
lower-/.f64N/A
lower-*.f64N/A
lower-*.f6498.4
Applied rewrites98.4%
(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 2024318
(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)))))