
(FPCore (a b angle) :precision binary64 (let* ((t_0 (* (/ angle 180.0) PI))) (+ (pow (* a (sin t_0)) 2.0) (pow (* b (cos t_0)) 2.0))))
double code(double a, double b, double angle) {
double t_0 = (angle / 180.0) * ((double) M_PI);
return pow((a * sin(t_0)), 2.0) + pow((b * cos(t_0)), 2.0);
}
public static double code(double a, double b, double angle) {
double t_0 = (angle / 180.0) * Math.PI;
return Math.pow((a * Math.sin(t_0)), 2.0) + Math.pow((b * Math.cos(t_0)), 2.0);
}
def code(a, b, angle): t_0 = (angle / 180.0) * math.pi return math.pow((a * math.sin(t_0)), 2.0) + math.pow((b * math.cos(t_0)), 2.0)
function code(a, b, angle) t_0 = Float64(Float64(angle / 180.0) * pi) return Float64((Float64(a * sin(t_0)) ^ 2.0) + (Float64(b * cos(t_0)) ^ 2.0)) end
function tmp = code(a, b, angle) t_0 = (angle / 180.0) * pi; tmp = ((a * sin(t_0)) ^ 2.0) + ((b * cos(t_0)) ^ 2.0); end
code[a_, b_, angle_] := Block[{t$95$0 = N[(N[(angle / 180.0), $MachinePrecision] * Pi), $MachinePrecision]}, N[(N[Power[N[(a * N[Sin[t$95$0], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision] + N[Power[N[(b * N[Cos[t$95$0], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{angle}{180} \cdot \pi\\
{\left(a \cdot \sin t\_0\right)}^{2} + {\left(b \cdot \cos t\_0\right)}^{2}
\end{array}
\end{array}
Sampling outcomes in binary64 precision:
Herbie found 10 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (a b angle) :precision binary64 (let* ((t_0 (* (/ angle 180.0) PI))) (+ (pow (* a (sin t_0)) 2.0) (pow (* b (cos t_0)) 2.0))))
double code(double a, double b, double angle) {
double t_0 = (angle / 180.0) * ((double) M_PI);
return pow((a * sin(t_0)), 2.0) + pow((b * cos(t_0)), 2.0);
}
public static double code(double a, double b, double angle) {
double t_0 = (angle / 180.0) * Math.PI;
return Math.pow((a * Math.sin(t_0)), 2.0) + Math.pow((b * Math.cos(t_0)), 2.0);
}
def code(a, b, angle): t_0 = (angle / 180.0) * math.pi return math.pow((a * math.sin(t_0)), 2.0) + math.pow((b * math.cos(t_0)), 2.0)
function code(a, b, angle) t_0 = Float64(Float64(angle / 180.0) * pi) return Float64((Float64(a * sin(t_0)) ^ 2.0) + (Float64(b * cos(t_0)) ^ 2.0)) end
function tmp = code(a, b, angle) t_0 = (angle / 180.0) * pi; tmp = ((a * sin(t_0)) ^ 2.0) + ((b * cos(t_0)) ^ 2.0); end
code[a_, b_, angle_] := Block[{t$95$0 = N[(N[(angle / 180.0), $MachinePrecision] * Pi), $MachinePrecision]}, N[(N[Power[N[(a * N[Sin[t$95$0], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision] + N[Power[N[(b * N[Cos[t$95$0], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]]
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \frac{angle}{180} \cdot \pi\\
{\left(a \cdot \sin t\_0\right)}^{2} + {\left(b \cdot \cos t\_0\right)}^{2}
\end{array}
\end{array}
angle_m = (fabs.f64 angle)
(FPCore (a b angle_m)
:precision binary64
(let* ((t_0 (* angle_m (* a (* PI 0.005555555555555556)))))
(if (<= (/ angle_m 180.0) 0.08)
(fma
t_0
t_0
(* (* b b) (fma 0.5 (cos (* PI (* angle_m 0.011111111111111112))) 0.5)))
(fma
(* b 0.5)
b
(*
(* a a)
(fma -0.5 (cos (* (* angle_m PI) 0.011111111111111112)) 0.5))))))angle_m = fabs(angle);
double code(double a, double b, double angle_m) {
double t_0 = angle_m * (a * (((double) M_PI) * 0.005555555555555556));
double tmp;
if ((angle_m / 180.0) <= 0.08) {
tmp = fma(t_0, t_0, ((b * b) * fma(0.5, cos((((double) M_PI) * (angle_m * 0.011111111111111112))), 0.5)));
} else {
tmp = fma((b * 0.5), b, ((a * a) * fma(-0.5, cos(((angle_m * ((double) M_PI)) * 0.011111111111111112)), 0.5)));
}
return tmp;
}
angle_m = abs(angle) function code(a, b, angle_m) t_0 = Float64(angle_m * Float64(a * Float64(pi * 0.005555555555555556))) tmp = 0.0 if (Float64(angle_m / 180.0) <= 0.08) tmp = fma(t_0, t_0, Float64(Float64(b * b) * fma(0.5, cos(Float64(pi * Float64(angle_m * 0.011111111111111112))), 0.5))); else tmp = fma(Float64(b * 0.5), b, Float64(Float64(a * a) * fma(-0.5, cos(Float64(Float64(angle_m * pi) * 0.011111111111111112)), 0.5))); end return tmp end
angle_m = N[Abs[angle], $MachinePrecision]
code[a_, b_, angle$95$m_] := Block[{t$95$0 = N[(angle$95$m * N[(a * N[(Pi * 0.005555555555555556), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]}, If[LessEqual[N[(angle$95$m / 180.0), $MachinePrecision], 0.08], N[(t$95$0 * t$95$0 + N[(N[(b * b), $MachinePrecision] * N[(0.5 * N[Cos[N[(Pi * N[(angle$95$m * 0.011111111111111112), $MachinePrecision]), $MachinePrecision]], $MachinePrecision] + 0.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision], N[(N[(b * 0.5), $MachinePrecision] * b + N[(N[(a * a), $MachinePrecision] * N[(-0.5 * N[Cos[N[(N[(angle$95$m * Pi), $MachinePrecision] * 0.011111111111111112), $MachinePrecision]], $MachinePrecision] + 0.5), $MachinePrecision]), $MachinePrecision]), $MachinePrecision]]]
\begin{array}{l}
angle_m = \left|angle\right|
\\
\begin{array}{l}
t_0 := angle\_m \cdot \left(a \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\\
\mathbf{if}\;\frac{angle\_m}{180} \leq 0.08:\\
\;\;\;\;\mathsf{fma}\left(t\_0, t\_0, \left(b \cdot b\right) \cdot \mathsf{fma}\left(0.5, \cos \left(\pi \cdot \left(angle\_m \cdot 0.011111111111111112\right)\right), 0.5\right)\right)\\
\mathbf{else}:\\
\;\;\;\;\mathsf{fma}\left(b \cdot 0.5, b, \left(a \cdot a\right) \cdot \mathsf{fma}\left(-0.5, \cos \left(\left(angle\_m \cdot \pi\right) \cdot 0.011111111111111112\right), 0.5\right)\right)\\
\end{array}
\end{array}
if (/.f64 angle #s(literal 180 binary64)) < 0.0800000000000000017Initial program 99.7%
Taylor expanded in angle around 0
*-commutativeN/A
associate-*r*N/A
associate-*l*N/A
*-commutativeN/A
lower-*.f64N/A
associate-*r*N/A
*-commutativeN/A
lower-*.f64N/A
lower-PI.f64N/A
lower-*.f6499.8
Applied rewrites99.8%
Applied rewrites99.8%
if 0.0800000000000000017 < (/.f64 angle #s(literal 180 binary64)) Initial program 62.3%
lift-*.f64N/A
lift-/.f64N/A
associate-*l/N/A
div-invN/A
lower-*.f64N/A
lower-*.f64N/A
metadata-eval62.5
Applied rewrites62.5%
Applied rewrites42.8%
Taylor expanded in b around 0
lower-*.f64N/A
unpow2N/A
lower-*.f64N/A
+-commutativeN/A
lower-fma.f64N/A
lower-cos.f64N/A
*-commutativeN/A
lower-*.f64N/A
lower-*.f64N/A
lower-PI.f6462.7
Applied rewrites62.7%
Final simplification81.2%
angle_m = (fabs.f64 angle) (FPCore (a b angle_m) :precision binary64 (+ (pow (* a (sin (* (* angle_m PI) 0.005555555555555556))) 2.0) (pow (* b (cos (* angle_m (* PI 0.005555555555555556)))) 2.0)))
angle_m = fabs(angle);
double code(double a, double b, double angle_m) {
return pow((a * sin(((angle_m * ((double) M_PI)) * 0.005555555555555556))), 2.0) + pow((b * cos((angle_m * (((double) M_PI) * 0.005555555555555556)))), 2.0);
}
angle_m = Math.abs(angle);
public static double code(double a, double b, double angle_m) {
return Math.pow((a * Math.sin(((angle_m * Math.PI) * 0.005555555555555556))), 2.0) + Math.pow((b * Math.cos((angle_m * (Math.PI * 0.005555555555555556)))), 2.0);
}
angle_m = math.fabs(angle) def code(a, b, angle_m): return math.pow((a * math.sin(((angle_m * math.pi) * 0.005555555555555556))), 2.0) + math.pow((b * math.cos((angle_m * (math.pi * 0.005555555555555556)))), 2.0)
angle_m = abs(angle) function code(a, b, angle_m) return Float64((Float64(a * sin(Float64(Float64(angle_m * pi) * 0.005555555555555556))) ^ 2.0) + (Float64(b * cos(Float64(angle_m * Float64(pi * 0.005555555555555556)))) ^ 2.0)) end
angle_m = abs(angle); function tmp = code(a, b, angle_m) tmp = ((a * sin(((angle_m * pi) * 0.005555555555555556))) ^ 2.0) + ((b * cos((angle_m * (pi * 0.005555555555555556)))) ^ 2.0); end
angle_m = N[Abs[angle], $MachinePrecision] code[a_, b_, angle$95$m_] := N[(N[Power[N[(a * N[Sin[N[(N[(angle$95$m * Pi), $MachinePrecision] * 0.005555555555555556), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision] + N[Power[N[(b * N[Cos[N[(angle$95$m * N[(Pi * 0.005555555555555556), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision], 2.0], $MachinePrecision]), $MachinePrecision]
\begin{array}{l}
angle_m = \left|angle\right|
\\
{\left(a \cdot \sin \left(\left(angle\_m \cdot \pi\right) \cdot 0.005555555555555556\right)\right)}^{2} + {\left(b \cdot \cos \left(angle\_m \cdot \left(\pi \cdot 0.005555555555555556\right)\right)\right)}^{2}
\end{array}
Initial program 79.5%
lift-*.f64N/A
lift-/.f64N/A
associate-*l/N/A
div-invN/A
lower-*.f64N/A
lower-*.f64N/A
metadata-eval79.5
Applied rewrites79.5%
lift-*.f64N/A
*-commutativeN/A
lift-/.f64N/A
div-invN/A
metadata-evalN/A
*-commutativeN/A
associate-*r*N/A
lower-*.f64N/A
lower-*.f6479.5
Applied rewrites79.5%
Final simplification79.5%
herbie shell --seed 2024226
(FPCore (a b angle)
:name "ab-angle->ABCF A"
:precision binary64
(+ (pow (* a (sin (* (/ angle 180.0) PI))) 2.0) (pow (* b (cos (* (/ angle 180.0) PI))) 2.0)))