
(FPCore (ux uy maxCos) :precision binary32 (let* ((t_0 (+ (- 1.0 ux) (* ux maxCos)))) (* (sin (* (* uy 2.0) PI)) (sqrt (- 1.0 (* t_0 t_0))))))
float code(float ux, float uy, float maxCos) {
float t_0 = (1.0f - ux) + (ux * maxCos);
return sinf(((uy * 2.0f) * ((float) M_PI))) * sqrtf((1.0f - (t_0 * t_0)));
}
function code(ux, uy, maxCos) t_0 = Float32(Float32(Float32(1.0) - ux) + Float32(ux * maxCos)) return Float32(sin(Float32(Float32(uy * Float32(2.0)) * Float32(pi))) * sqrt(Float32(Float32(1.0) - Float32(t_0 * t_0)))) end
function tmp = code(ux, uy, maxCos) t_0 = (single(1.0) - ux) + (ux * maxCos); tmp = sin(((uy * single(2.0)) * single(pi))) * sqrt((single(1.0) - (t_0 * t_0))); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - ux\right) + ux \cdot maxCos\\
\sin \left(\left(uy \cdot 2\right) \cdot \pi\right) \cdot \sqrt{1 - t_0 \cdot t_0}
\end{array}
\end{array}
Sampling outcomes in binary32 precision:
Herbie found 9 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (ux uy maxCos) :precision binary32 (let* ((t_0 (+ (- 1.0 ux) (* ux maxCos)))) (* (sin (* (* uy 2.0) PI)) (sqrt (- 1.0 (* t_0 t_0))))))
float code(float ux, float uy, float maxCos) {
float t_0 = (1.0f - ux) + (ux * maxCos);
return sinf(((uy * 2.0f) * ((float) M_PI))) * sqrtf((1.0f - (t_0 * t_0)));
}
function code(ux, uy, maxCos) t_0 = Float32(Float32(Float32(1.0) - ux) + Float32(ux * maxCos)) return Float32(sin(Float32(Float32(uy * Float32(2.0)) * Float32(pi))) * sqrt(Float32(Float32(1.0) - Float32(t_0 * t_0)))) end
function tmp = code(ux, uy, maxCos) t_0 = (single(1.0) - ux) + (ux * maxCos); tmp = sin(((uy * single(2.0)) * single(pi))) * sqrt((single(1.0) - (t_0 * t_0))); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left(1 - ux\right) + ux \cdot maxCos\\
\sin \left(\left(uy \cdot 2\right) \cdot \pi\right) \cdot \sqrt{1 - t_0 \cdot t_0}
\end{array}
\end{array}
(FPCore (ux uy maxCos)
:precision binary32
(let* ((t_0 (* 2.0 (* uy PI))) (t_1 (+ 2.0 t_0)))
(*
(sqrt (* (* (- 1.0 maxCos) ux) (+ 2.0 (* ux (+ maxCos -1.0)))))
(sin (/ (* t_0 t_1) t_1)))))
float code(float ux, float uy, float maxCos) {
float t_0 = 2.0f * (uy * ((float) M_PI));
float t_1 = 2.0f + t_0;
return sqrtf((((1.0f - maxCos) * ux) * (2.0f + (ux * (maxCos + -1.0f))))) * sinf(((t_0 * t_1) / t_1));
}
function code(ux, uy, maxCos) t_0 = Float32(Float32(2.0) * Float32(uy * Float32(pi))) t_1 = Float32(Float32(2.0) + t_0) return Float32(sqrt(Float32(Float32(Float32(Float32(1.0) - maxCos) * ux) * Float32(Float32(2.0) + Float32(ux * Float32(maxCos + Float32(-1.0)))))) * sin(Float32(Float32(t_0 * t_1) / t_1))) end
function tmp = code(ux, uy, maxCos) t_0 = single(2.0) * (uy * single(pi)); t_1 = single(2.0) + t_0; tmp = sqrt((((single(1.0) - maxCos) * ux) * (single(2.0) + (ux * (maxCos + single(-1.0)))))) * sin(((t_0 * t_1) / t_1)); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := 2 \cdot \left(uy \cdot \pi\right)\\
t_1 := 2 + t_0\\
\sqrt{\left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(2 + ux \cdot \left(maxCos + -1\right)\right)} \cdot \sin \left(\frac{t_0 \cdot t_1}{t_1}\right)
\end{array}
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in ux around 0 98.4%
+-commutative98.4%
fma-def98.4%
+-commutative98.4%
mul-1-neg98.4%
sub-neg98.4%
metadata-eval98.4%
distribute-neg-in98.4%
metadata-eval98.4%
+-commutative98.4%
mul-1-neg98.4%
associate--l+98.4%
mul-1-neg98.4%
sub-neg98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
unpow298.4%
Simplified98.4%
pow198.4%
count-298.4%
associate-*l*98.4%
Applied egg-rr98.4%
unpow198.4%
Simplified98.4%
Taylor expanded in uy around inf 98.4%
*-commutative98.4%
*-commutative98.4%
unpow298.4%
associate-*r*98.4%
associate-*r*98.4%
distribute-rgt-out98.4%
*-commutative98.4%
*-commutative98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
associate-*r*98.4%
*-commutative98.4%
associate-*l*98.4%
Simplified98.4%
*-commutative98.4%
associate-*r*98.4%
expm1-log1p-u98.3%
expm1-def60.7%
flip--60.5%
log1p-udef60.5%
add-exp-log60.5%
*-commutative60.5%
log1p-udef60.5%
add-exp-log60.5%
*-commutative60.5%
metadata-eval60.5%
Applied egg-rr60.5%
difference-of-sqr-160.8%
+-commutative60.8%
associate-+r+60.9%
metadata-eval60.9%
*-commutative60.9%
+-commutative60.9%
associate--l+98.0%
*-commutative98.0%
metadata-eval98.0%
+-commutative98.0%
associate-+r+98.4%
metadata-eval98.4%
*-commutative98.4%
Simplified98.4%
Final simplification98.4%
(FPCore (ux uy maxCos) :precision binary32 (* (sqrt (* (* (- 1.0 maxCos) ux) (+ 2.0 (* ux (+ maxCos -1.0))))) (sin (* PI (* 2.0 uy)))))
float code(float ux, float uy, float maxCos) {
return sqrtf((((1.0f - maxCos) * ux) * (2.0f + (ux * (maxCos + -1.0f))))) * sinf((((float) M_PI) * (2.0f * uy)));
}
function code(ux, uy, maxCos) return Float32(sqrt(Float32(Float32(Float32(Float32(1.0) - maxCos) * ux) * Float32(Float32(2.0) + Float32(ux * Float32(maxCos + Float32(-1.0)))))) * sin(Float32(Float32(pi) * Float32(Float32(2.0) * uy)))) end
function tmp = code(ux, uy, maxCos) tmp = sqrt((((single(1.0) - maxCos) * ux) * (single(2.0) + (ux * (maxCos + single(-1.0)))))) * sin((single(pi) * (single(2.0) * uy))); end
\begin{array}{l}
\\
\sqrt{\left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(2 + ux \cdot \left(maxCos + -1\right)\right)} \cdot \sin \left(\pi \cdot \left(2 \cdot uy\right)\right)
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in ux around 0 98.4%
+-commutative98.4%
fma-def98.4%
+-commutative98.4%
mul-1-neg98.4%
sub-neg98.4%
metadata-eval98.4%
distribute-neg-in98.4%
metadata-eval98.4%
+-commutative98.4%
mul-1-neg98.4%
associate--l+98.4%
mul-1-neg98.4%
sub-neg98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
unpow298.4%
Simplified98.4%
pow198.4%
count-298.4%
associate-*l*98.4%
Applied egg-rr98.4%
unpow198.4%
Simplified98.4%
Taylor expanded in uy around inf 98.4%
*-commutative98.4%
*-commutative98.4%
unpow298.4%
associate-*r*98.4%
associate-*r*98.4%
distribute-rgt-out98.4%
*-commutative98.4%
*-commutative98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
associate-*r*98.4%
*-commutative98.4%
associate-*l*98.4%
Simplified98.4%
Final simplification98.4%
(FPCore (ux uy maxCos)
:precision binary32
(if (<= (* 2.0 uy) 0.0003000000142492354)
(*
2.0
(*
(* uy PI)
(sqrt (* (- 1.0 maxCos) (* ux (+ 2.0 (* ux (+ maxCos -1.0))))))))
(* (sin (* PI (* 2.0 uy))) (sqrt (* ux (- 2.0 ux))))))
float code(float ux, float uy, float maxCos) {
float tmp;
if ((2.0f * uy) <= 0.0003000000142492354f) {
tmp = 2.0f * ((uy * ((float) M_PI)) * sqrtf(((1.0f - maxCos) * (ux * (2.0f + (ux * (maxCos + -1.0f)))))));
} else {
tmp = sinf((((float) M_PI) * (2.0f * uy))) * sqrtf((ux * (2.0f - ux)));
}
return tmp;
}
function code(ux, uy, maxCos) tmp = Float32(0.0) if (Float32(Float32(2.0) * uy) <= Float32(0.0003000000142492354)) tmp = Float32(Float32(2.0) * Float32(Float32(uy * Float32(pi)) * sqrt(Float32(Float32(Float32(1.0) - maxCos) * Float32(ux * Float32(Float32(2.0) + Float32(ux * Float32(maxCos + Float32(-1.0))))))))); else tmp = Float32(sin(Float32(Float32(pi) * Float32(Float32(2.0) * uy))) * sqrt(Float32(ux * Float32(Float32(2.0) - ux)))); end return tmp end
function tmp_2 = code(ux, uy, maxCos) tmp = single(0.0); if ((single(2.0) * uy) <= single(0.0003000000142492354)) tmp = single(2.0) * ((uy * single(pi)) * sqrt(((single(1.0) - maxCos) * (ux * (single(2.0) + (ux * (maxCos + single(-1.0)))))))); else tmp = sin((single(pi) * (single(2.0) * uy))) * sqrt((ux * (single(2.0) - ux))); end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;2 \cdot uy \leq 0.0003000000142492354:\\
\;\;\;\;2 \cdot \left(\left(uy \cdot \pi\right) \cdot \sqrt{\left(1 - maxCos\right) \cdot \left(ux \cdot \left(2 + ux \cdot \left(maxCos + -1\right)\right)\right)}\right)\\
\mathbf{else}:\\
\;\;\;\;\sin \left(\pi \cdot \left(2 \cdot uy\right)\right) \cdot \sqrt{ux \cdot \left(2 - ux\right)}\\
\end{array}
\end{array}
if (*.f32 uy 2) < 3.00000014e-4Initial program 55.0%
associate-*l*55.0%
sub-neg55.0%
+-commutative55.0%
distribute-rgt-neg-in55.0%
fma-def54.9%
+-commutative54.9%
associate-+r-55.1%
fma-def55.1%
neg-sub055.1%
+-commutative55.1%
associate-+r-54.8%
associate--r-54.8%
neg-sub054.8%
+-commutative54.8%
sub-neg54.8%
fma-def54.8%
Simplified54.8%
Taylor expanded in ux around 0 98.4%
+-commutative98.4%
fma-def98.5%
+-commutative98.5%
mul-1-neg98.5%
sub-neg98.5%
metadata-eval98.5%
distribute-neg-in98.5%
metadata-eval98.5%
+-commutative98.5%
mul-1-neg98.5%
associate--l+98.5%
mul-1-neg98.5%
sub-neg98.5%
sub-neg98.5%
metadata-eval98.5%
*-commutative98.5%
unpow298.5%
Simplified98.5%
pow198.5%
count-298.5%
associate-*l*98.5%
Applied egg-rr98.5%
unpow198.5%
Simplified98.5%
Taylor expanded in uy around inf 98.5%
*-commutative98.5%
*-commutative98.5%
unpow298.5%
associate-*r*98.5%
associate-*r*98.5%
distribute-rgt-out98.6%
*-commutative98.6%
*-commutative98.6%
sub-neg98.6%
metadata-eval98.6%
*-commutative98.6%
associate-*r*98.6%
*-commutative98.6%
associate-*l*98.6%
Simplified98.6%
Taylor expanded in uy around 0 98.5%
if 3.00000014e-4 < (*.f32 uy 2) Initial program 56.2%
associate-*l*56.2%
sub-neg56.2%
+-commutative56.2%
distribute-rgt-neg-in56.2%
fma-def56.3%
+-commutative56.3%
associate-+r-56.3%
fma-def56.3%
neg-sub056.3%
+-commutative56.3%
associate-+r-56.3%
associate--r-56.3%
neg-sub056.3%
+-commutative56.3%
sub-neg56.3%
fma-def56.3%
Simplified56.3%
Taylor expanded in ux around 0 98.3%
+-commutative98.3%
fma-def98.2%
+-commutative98.2%
mul-1-neg98.2%
sub-neg98.2%
metadata-eval98.2%
distribute-neg-in98.2%
metadata-eval98.2%
+-commutative98.2%
mul-1-neg98.2%
associate--l+98.2%
mul-1-neg98.2%
sub-neg98.2%
sub-neg98.2%
metadata-eval98.2%
*-commutative98.2%
unpow298.2%
Simplified98.2%
pow198.2%
count-298.2%
associate-*l*98.2%
Applied egg-rr98.2%
unpow198.2%
Simplified98.2%
Taylor expanded in uy around inf 98.2%
*-commutative98.2%
*-commutative98.2%
unpow298.2%
associate-*r*98.2%
associate-*r*98.2%
distribute-rgt-out98.2%
*-commutative98.2%
*-commutative98.2%
sub-neg98.2%
metadata-eval98.2%
*-commutative98.2%
associate-*r*98.2%
*-commutative98.2%
associate-*l*98.2%
Simplified98.2%
Taylor expanded in maxCos around 0 94.8%
*-commutative94.8%
+-commutative94.8%
mul-1-neg94.8%
unsub-neg94.8%
Simplified94.8%
Final simplification97.0%
(FPCore (ux uy maxCos)
:precision binary32
(if (<= (* 2.0 uy) 0.010999999940395355)
(*
2.0
(*
(* uy PI)
(sqrt (* (- 1.0 maxCos) (* ux (+ 2.0 (* ux (+ maxCos -1.0))))))))
(* (sin (* PI (* 2.0 uy))) (sqrt (* ux 2.0)))))
float code(float ux, float uy, float maxCos) {
float tmp;
if ((2.0f * uy) <= 0.010999999940395355f) {
tmp = 2.0f * ((uy * ((float) M_PI)) * sqrtf(((1.0f - maxCos) * (ux * (2.0f + (ux * (maxCos + -1.0f)))))));
} else {
tmp = sinf((((float) M_PI) * (2.0f * uy))) * sqrtf((ux * 2.0f));
}
return tmp;
}
function code(ux, uy, maxCos) tmp = Float32(0.0) if (Float32(Float32(2.0) * uy) <= Float32(0.010999999940395355)) tmp = Float32(Float32(2.0) * Float32(Float32(uy * Float32(pi)) * sqrt(Float32(Float32(Float32(1.0) - maxCos) * Float32(ux * Float32(Float32(2.0) + Float32(ux * Float32(maxCos + Float32(-1.0))))))))); else tmp = Float32(sin(Float32(Float32(pi) * Float32(Float32(2.0) * uy))) * sqrt(Float32(ux * Float32(2.0)))); end return tmp end
function tmp_2 = code(ux, uy, maxCos) tmp = single(0.0); if ((single(2.0) * uy) <= single(0.010999999940395355)) tmp = single(2.0) * ((uy * single(pi)) * sqrt(((single(1.0) - maxCos) * (ux * (single(2.0) + (ux * (maxCos + single(-1.0)))))))); else tmp = sin((single(pi) * (single(2.0) * uy))) * sqrt((ux * single(2.0))); end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;2 \cdot uy \leq 0.010999999940395355:\\
\;\;\;\;2 \cdot \left(\left(uy \cdot \pi\right) \cdot \sqrt{\left(1 - maxCos\right) \cdot \left(ux \cdot \left(2 + ux \cdot \left(maxCos + -1\right)\right)\right)}\right)\\
\mathbf{else}:\\
\;\;\;\;\sin \left(\pi \cdot \left(2 \cdot uy\right)\right) \cdot \sqrt{ux \cdot 2}\\
\end{array}
\end{array}
if (*.f32 uy 2) < 0.0109999999Initial program 57.4%
associate-*l*57.4%
sub-neg57.4%
+-commutative57.4%
distribute-rgt-neg-in57.4%
fma-def57.4%
+-commutative57.4%
associate-+r-57.4%
fma-def57.4%
neg-sub057.4%
+-commutative57.4%
associate-+r-57.3%
associate--r-57.3%
neg-sub057.3%
+-commutative57.3%
sub-neg57.3%
fma-def57.3%
Simplified57.3%
Taylor expanded in ux around 0 98.4%
+-commutative98.4%
fma-def98.4%
+-commutative98.4%
mul-1-neg98.4%
sub-neg98.4%
metadata-eval98.4%
distribute-neg-in98.4%
metadata-eval98.4%
+-commutative98.4%
mul-1-neg98.4%
associate--l+98.5%
mul-1-neg98.5%
sub-neg98.5%
sub-neg98.5%
metadata-eval98.5%
*-commutative98.5%
unpow298.5%
Simplified98.5%
pow198.5%
count-298.5%
associate-*l*98.5%
Applied egg-rr98.5%
unpow198.5%
Simplified98.5%
Taylor expanded in uy around inf 98.5%
*-commutative98.5%
*-commutative98.5%
unpow298.5%
associate-*r*98.5%
associate-*r*98.5%
distribute-rgt-out98.5%
*-commutative98.5%
*-commutative98.5%
sub-neg98.5%
metadata-eval98.5%
*-commutative98.5%
associate-*r*98.5%
*-commutative98.5%
associate-*l*98.5%
Simplified98.5%
Taylor expanded in uy around 0 94.8%
if 0.0109999999 < (*.f32 uy 2) Initial program 49.5%
Taylor expanded in ux around 0 39.8%
Taylor expanded in maxCos around 0 77.2%
Final simplification90.6%
(FPCore (ux uy maxCos) :precision binary32 (* 2.0 (* (* uy PI) (sqrt (* (- 1.0 maxCos) (* ux (+ 2.0 (* ux (+ maxCos -1.0)))))))))
float code(float ux, float uy, float maxCos) {
return 2.0f * ((uy * ((float) M_PI)) * sqrtf(((1.0f - maxCos) * (ux * (2.0f + (ux * (maxCos + -1.0f)))))));
}
function code(ux, uy, maxCos) return Float32(Float32(2.0) * Float32(Float32(uy * Float32(pi)) * sqrt(Float32(Float32(Float32(1.0) - maxCos) * Float32(ux * Float32(Float32(2.0) + Float32(ux * Float32(maxCos + Float32(-1.0))))))))) end
function tmp = code(ux, uy, maxCos) tmp = single(2.0) * ((uy * single(pi)) * sqrt(((single(1.0) - maxCos) * (ux * (single(2.0) + (ux * (maxCos + single(-1.0)))))))); end
\begin{array}{l}
\\
2 \cdot \left(\left(uy \cdot \pi\right) \cdot \sqrt{\left(1 - maxCos\right) \cdot \left(ux \cdot \left(2 + ux \cdot \left(maxCos + -1\right)\right)\right)}\right)
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in ux around 0 98.4%
+-commutative98.4%
fma-def98.4%
+-commutative98.4%
mul-1-neg98.4%
sub-neg98.4%
metadata-eval98.4%
distribute-neg-in98.4%
metadata-eval98.4%
+-commutative98.4%
mul-1-neg98.4%
associate--l+98.4%
mul-1-neg98.4%
sub-neg98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
unpow298.4%
Simplified98.4%
pow198.4%
count-298.4%
associate-*l*98.4%
Applied egg-rr98.4%
unpow198.4%
Simplified98.4%
Taylor expanded in uy around inf 98.4%
*-commutative98.4%
*-commutative98.4%
unpow298.4%
associate-*r*98.4%
associate-*r*98.4%
distribute-rgt-out98.4%
*-commutative98.4%
*-commutative98.4%
sub-neg98.4%
metadata-eval98.4%
*-commutative98.4%
associate-*r*98.4%
*-commutative98.4%
associate-*l*98.4%
Simplified98.4%
Taylor expanded in uy around 0 80.9%
Final simplification80.9%
(FPCore (ux uy maxCos) :precision binary32 (if (<= ux 0.00039000000106170774) (* (* PI (* 2.0 uy)) (sqrt (* ux (+ 2.0 (* maxCos -2.0))))) (* 2.0 (* (* uy PI) (sqrt (+ 1.0 (* (+ ux -1.0) (- 1.0 ux))))))))
float code(float ux, float uy, float maxCos) {
float tmp;
if (ux <= 0.00039000000106170774f) {
tmp = (((float) M_PI) * (2.0f * uy)) * sqrtf((ux * (2.0f + (maxCos * -2.0f))));
} else {
tmp = 2.0f * ((uy * ((float) M_PI)) * sqrtf((1.0f + ((ux + -1.0f) * (1.0f - ux)))));
}
return tmp;
}
function code(ux, uy, maxCos) tmp = Float32(0.0) if (ux <= Float32(0.00039000000106170774)) tmp = Float32(Float32(Float32(pi) * Float32(Float32(2.0) * uy)) * sqrt(Float32(ux * Float32(Float32(2.0) + Float32(maxCos * Float32(-2.0)))))); else tmp = Float32(Float32(2.0) * Float32(Float32(uy * Float32(pi)) * sqrt(Float32(Float32(1.0) + Float32(Float32(ux + Float32(-1.0)) * Float32(Float32(1.0) - ux)))))); end return tmp end
function tmp_2 = code(ux, uy, maxCos) tmp = single(0.0); if (ux <= single(0.00039000000106170774)) tmp = (single(pi) * (single(2.0) * uy)) * sqrt((ux * (single(2.0) + (maxCos * single(-2.0))))); else tmp = single(2.0) * ((uy * single(pi)) * sqrt((single(1.0) + ((ux + single(-1.0)) * (single(1.0) - ux))))); end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
\mathbf{if}\;ux \leq 0.00039000000106170774:\\
\;\;\;\;\left(\pi \cdot \left(2 \cdot uy\right)\right) \cdot \sqrt{ux \cdot \left(2 + maxCos \cdot -2\right)}\\
\mathbf{else}:\\
\;\;\;\;2 \cdot \left(\left(uy \cdot \pi\right) \cdot \sqrt{1 + \left(ux + -1\right) \cdot \left(1 - ux\right)}\right)\\
\end{array}
\end{array}
if ux < 3.90000001e-4Initial program 34.8%
associate-*l*34.8%
sub-neg34.8%
+-commutative34.8%
distribute-rgt-neg-in34.8%
fma-def34.6%
+-commutative34.6%
associate-+r-34.6%
fma-def34.6%
neg-sub034.6%
+-commutative34.6%
associate-+r-34.6%
associate--r-34.6%
neg-sub034.6%
+-commutative34.6%
sub-neg34.6%
fma-def34.6%
Simplified34.6%
Taylor expanded in ux around 0 92.9%
Taylor expanded in uy around 0 77.3%
associate-*r*77.3%
associate-*r*77.3%
*-commutative77.3%
neg-mul-177.3%
sub-neg77.3%
metadata-eval77.3%
associate-+r-77.4%
associate-+r-77.3%
distribute-neg-in77.3%
metadata-eval77.3%
associate-+r+77.3%
+-commutative77.3%
associate-+l+77.3%
metadata-eval77.3%
Simplified77.3%
Taylor expanded in maxCos around 0 77.4%
if 3.90000001e-4 < ux Initial program 90.6%
associate-*l*90.6%
sub-neg90.6%
+-commutative90.6%
distribute-rgt-neg-in90.6%
fma-def90.8%
+-commutative90.8%
associate-+r-91.0%
fma-def91.0%
neg-sub091.0%
+-commutative91.0%
associate-+r-90.7%
associate--r-90.7%
neg-sub090.7%
+-commutative90.7%
sub-neg90.7%
fma-def90.7%
Simplified90.7%
Taylor expanded in uy around 0 75.4%
Taylor expanded in maxCos around 0 69.9%
Final simplification74.6%
(FPCore (ux uy maxCos) :precision binary32 (* (* PI (* 2.0 uy)) (sqrt (* ux (+ 2.0 (* maxCos -2.0))))))
float code(float ux, float uy, float maxCos) {
return (((float) M_PI) * (2.0f * uy)) * sqrtf((ux * (2.0f + (maxCos * -2.0f))));
}
function code(ux, uy, maxCos) return Float32(Float32(Float32(pi) * Float32(Float32(2.0) * uy)) * sqrt(Float32(ux * Float32(Float32(2.0) + Float32(maxCos * Float32(-2.0)))))) end
function tmp = code(ux, uy, maxCos) tmp = (single(pi) * (single(2.0) * uy)) * sqrt((ux * (single(2.0) + (maxCos * single(-2.0))))); end
\begin{array}{l}
\\
\left(\pi \cdot \left(2 \cdot uy\right)\right) \cdot \sqrt{ux \cdot \left(2 + maxCos \cdot -2\right)}
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in ux around 0 77.2%
Taylor expanded in uy around 0 66.0%
associate-*r*66.0%
associate-*r*66.0%
*-commutative66.0%
neg-mul-166.0%
sub-neg66.0%
metadata-eval66.0%
associate-+r-66.0%
associate-+r-66.0%
distribute-neg-in66.0%
metadata-eval66.0%
associate-+r+66.0%
+-commutative66.0%
associate-+l+66.0%
metadata-eval66.0%
Simplified66.0%
Taylor expanded in maxCos around 0 66.0%
Final simplification66.0%
(FPCore (ux uy maxCos) :precision binary32 (* (* PI (* 2.0 uy)) (sqrt (* ux 2.0))))
float code(float ux, float uy, float maxCos) {
return (((float) M_PI) * (2.0f * uy)) * sqrtf((ux * 2.0f));
}
function code(ux, uy, maxCos) return Float32(Float32(Float32(pi) * Float32(Float32(2.0) * uy)) * sqrt(Float32(ux * Float32(2.0)))) end
function tmp = code(ux, uy, maxCos) tmp = (single(pi) * (single(2.0) * uy)) * sqrt((ux * single(2.0))); end
\begin{array}{l}
\\
\left(\pi \cdot \left(2 \cdot uy\right)\right) \cdot \sqrt{ux \cdot 2}
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in ux around 0 77.2%
Taylor expanded in uy around 0 66.0%
associate-*r*66.0%
associate-*r*66.0%
*-commutative66.0%
neg-mul-166.0%
sub-neg66.0%
metadata-eval66.0%
associate-+r-66.0%
associate-+r-66.0%
distribute-neg-in66.0%
metadata-eval66.0%
associate-+r+66.0%
+-commutative66.0%
associate-+l+66.0%
metadata-eval66.0%
Simplified66.0%
Taylor expanded in maxCos around 0 62.7%
Final simplification62.7%
(FPCore (ux uy maxCos) :precision binary32 (* 2.0 (* (* uy PI) (sqrt 0.0))))
float code(float ux, float uy, float maxCos) {
return 2.0f * ((uy * ((float) M_PI)) * sqrtf(0.0f));
}
function code(ux, uy, maxCos) return Float32(Float32(2.0) * Float32(Float32(uy * Float32(pi)) * sqrt(Float32(0.0)))) end
function tmp = code(ux, uy, maxCos) tmp = single(2.0) * ((uy * single(pi)) * sqrt(single(0.0))); end
\begin{array}{l}
\\
2 \cdot \left(\left(uy \cdot \pi\right) \cdot \sqrt{0}\right)
\end{array}
Initial program 55.5%
associate-*l*55.5%
sub-neg55.5%
+-commutative55.5%
distribute-rgt-neg-in55.5%
fma-def55.5%
+-commutative55.5%
associate-+r-55.5%
fma-def55.5%
neg-sub055.5%
+-commutative55.5%
associate-+r-55.4%
associate--r-55.4%
neg-sub055.4%
+-commutative55.4%
sub-neg55.4%
fma-def55.4%
Simplified55.4%
Taylor expanded in uy around 0 48.6%
Taylor expanded in ux around 0 7.1%
Final simplification7.1%
herbie shell --seed 2023213
(FPCore (ux uy maxCos)
:name "UniformSampleCone, y"
:precision binary32
:pre (and (and (and (<= 2.328306437e-10 ux) (<= ux 1.0)) (and (<= 2.328306437e-10 uy) (<= uy 1.0))) (and (<= 0.0 maxCos) (<= maxCos 1.0)))
(* (sin (* (* uy 2.0) PI)) (sqrt (- 1.0 (* (+ (- 1.0 ux) (* ux maxCos)) (+ (- 1.0 ux) (* ux maxCos)))))))