| Alternative 1 | |
|---|---|
| Accuracy | 96.4% |
| Cost | 16484 |
(FPCore (ux uy maxCos) :precision binary32 (* (cos (* (* uy 2.0) PI)) (sqrt (- 1.0 (* (+ (- 1.0 ux) (* ux maxCos)) (+ (- 1.0 ux) (* ux maxCos)))))))
(FPCore (ux uy maxCos)
:precision binary32
(*
(cos (* PI (* uy 2.0)))
(sqrt
(*
ux
(+ (* 2.0 (- 1.0 maxCos)) (* (- 1.0 maxCos) (* ux (+ maxCos -1.0))))))))float code(float ux, float uy, float maxCos) {
return cosf(((uy * 2.0f) * ((float) M_PI))) * sqrtf((1.0f - (((1.0f - ux) + (ux * maxCos)) * ((1.0f - ux) + (ux * maxCos)))));
}
float code(float ux, float uy, float maxCos) {
return cosf((((float) M_PI) * (uy * 2.0f))) * sqrtf((ux * ((2.0f * (1.0f - maxCos)) + ((1.0f - maxCos) * (ux * (maxCos + -1.0f))))));
}
function code(ux, uy, maxCos) return Float32(cos(Float32(Float32(uy * Float32(2.0)) * Float32(pi))) * sqrt(Float32(Float32(1.0) - Float32(Float32(Float32(Float32(1.0) - ux) + Float32(ux * maxCos)) * Float32(Float32(Float32(1.0) - ux) + Float32(ux * maxCos)))))) end
function code(ux, uy, maxCos) return Float32(cos(Float32(Float32(pi) * Float32(uy * Float32(2.0)))) * sqrt(Float32(ux * Float32(Float32(Float32(2.0) * Float32(Float32(1.0) - maxCos)) + Float32(Float32(Float32(1.0) - maxCos) * Float32(ux * Float32(maxCos + Float32(-1.0)))))))) end
function tmp = code(ux, uy, maxCos) tmp = cos(((uy * single(2.0)) * single(pi))) * sqrt((single(1.0) - (((single(1.0) - ux) + (ux * maxCos)) * ((single(1.0) - ux) + (ux * maxCos))))); end
function tmp = code(ux, uy, maxCos) tmp = cos((single(pi) * (uy * single(2.0)))) * sqrt((ux * ((single(2.0) * (single(1.0) - maxCos)) + ((single(1.0) - maxCos) * (ux * (maxCos + single(-1.0))))))); end
\cos \left(\left(uy \cdot 2\right) \cdot \pi\right) \cdot \sqrt{1 - \left(\left(1 - ux\right) + ux \cdot maxCos\right) \cdot \left(\left(1 - ux\right) + ux \cdot maxCos\right)}
\cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{ux \cdot \left(2 \cdot \left(1 - maxCos\right) + \left(1 - maxCos\right) \cdot \left(ux \cdot \left(maxCos + -1\right)\right)\right)}
Results
Initial program 56.8%
Simplified56.7%
[Start]56.8 | \[ \cos \left(\left(uy \cdot 2\right) \cdot \pi\right) \cdot \sqrt{1 - \left(\left(1 - ux\right) + ux \cdot maxCos\right) \cdot \left(\left(1 - ux\right) + ux \cdot maxCos\right)}
\] |
|---|---|
associate-*l* [=>]56.8 | \[ \cos \color{blue}{\left(uy \cdot \left(2 \cdot \pi\right)\right)} \cdot \sqrt{1 - \left(\left(1 - ux\right) + ux \cdot maxCos\right) \cdot \left(\left(1 - ux\right) + ux \cdot maxCos\right)}
\] |
cancel-sign-sub-inv [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{1 + \left(-\left(\left(1 - ux\right) + ux \cdot maxCos\right)\right) \cdot \left(\left(1 - ux\right) + ux \cdot maxCos\right)}}
\] |
+-commutative [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{\left(-\left(\left(1 - ux\right) + ux \cdot maxCos\right)\right) \cdot \left(\left(1 - ux\right) + ux \cdot maxCos\right) + 1}}
\] |
*-commutative [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{\left(\left(1 - ux\right) + ux \cdot maxCos\right) \cdot \left(-\left(\left(1 - ux\right) + ux \cdot maxCos\right)\right)} + 1}
\] |
fma-def [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{\mathsf{fma}\left(\left(1 - ux\right) + ux \cdot maxCos, -\left(\left(1 - ux\right) + ux \cdot maxCos\right), 1\right)}}
\] |
+-commutative [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\color{blue}{ux \cdot maxCos + \left(1 - ux\right)}, -\left(\left(1 - ux\right) + ux \cdot maxCos\right), 1\right)}
\] |
associate-+r- [=>]56.8 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\color{blue}{\left(ux \cdot maxCos + 1\right) - ux}, -\left(\left(1 - ux\right) + ux \cdot maxCos\right), 1\right)}
\] |
fma-def [=>]56.9 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\color{blue}{\mathsf{fma}\left(ux, maxCos, 1\right)} - ux, -\left(\left(1 - ux\right) + ux \cdot maxCos\right), 1\right)}
\] |
neg-sub0 [=>]56.9 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, \color{blue}{0 - \left(\left(1 - ux\right) + ux \cdot maxCos\right)}, 1\right)}
\] |
+-commutative [=>]56.9 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, 0 - \color{blue}{\left(ux \cdot maxCos + \left(1 - ux\right)\right)}, 1\right)}
\] |
associate-+r- [=>]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, 0 - \color{blue}{\left(\left(ux \cdot maxCos + 1\right) - ux\right)}, 1\right)}
\] |
associate--r- [=>]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, \color{blue}{\left(0 - \left(ux \cdot maxCos + 1\right)\right) + ux}, 1\right)}
\] |
+-commutative [=>]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, \color{blue}{ux + \left(0 - \left(ux \cdot maxCos + 1\right)\right)}, 1\right)}
\] |
sub0-neg [=>]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, ux + \color{blue}{\left(-\left(ux \cdot maxCos + 1\right)\right)}, 1\right)}
\] |
sub-neg [<=]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, \color{blue}{ux - \left(ux \cdot maxCos + 1\right)}, 1\right)}
\] |
fma-def [=>]56.7 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(\mathsf{fma}\left(ux, maxCos, 1\right) - ux, ux - \color{blue}{\mathsf{fma}\left(ux, maxCos, 1\right)}, 1\right)}
\] |
Taylor expanded in ux around 0 99.0%
Simplified99.0%
[Start]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right) + ux \cdot \left(\left(1 + -1 \cdot \left(maxCos - 1\right)\right) - maxCos\right)}
\] |
|---|---|
+-commutative [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{ux \cdot \left(\left(1 + -1 \cdot \left(maxCos - 1\right)\right) - maxCos\right) + \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)}}
\] |
fma-def [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\color{blue}{\mathsf{fma}\left(ux, \left(1 + -1 \cdot \left(maxCos - 1\right)\right) - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}}
\] |
mul-1-neg [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(1 + \color{blue}{\left(-\left(maxCos - 1\right)\right)}\right) - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
unsub-neg [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \color{blue}{\left(1 - \left(maxCos - 1\right)\right)} - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
associate-+l- [<=]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \color{blue}{\left(\left(1 - maxCos\right) + 1\right)} - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
+-commutative [<=]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \color{blue}{\left(1 + \left(1 - maxCos\right)\right)} - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
associate-+r- [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \color{blue}{\left(\left(1 + 1\right) - maxCos\right)} - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
metadata-eval [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(\color{blue}{2} - maxCos\right) - maxCos, \left(maxCos - 1\right) \cdot \left(\left(1 - maxCos\right) \cdot {ux}^{2}\right)\right)}
\] |
associate-*r* [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \color{blue}{\left(\left(maxCos - 1\right) \cdot \left(1 - maxCos\right)\right) \cdot {ux}^{2}}\right)}
\] |
*-commutative [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \color{blue}{\left(\left(1 - maxCos\right) \cdot \left(maxCos - 1\right)\right)} \cdot {ux}^{2}\right)}
\] |
associate-*l* [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \color{blue}{\left(1 - maxCos\right) \cdot \left(\left(maxCos - 1\right) \cdot {ux}^{2}\right)}\right)}
\] |
sub-neg [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\color{blue}{\left(maxCos + \left(-1\right)\right)} \cdot {ux}^{2}\right)\right)}
\] |
metadata-eval [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\left(maxCos + \color{blue}{-1}\right) \cdot {ux}^{2}\right)\right)}
\] |
+-commutative [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\color{blue}{\left(-1 + maxCos\right)} \cdot {ux}^{2}\right)\right)}
\] |
unpow2 [=>]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\left(-1 + maxCos\right) \cdot \color{blue}{\left(ux \cdot ux\right)}\right)\right)}
\] |
Applied egg-rr97.5%
[Start]99.0 | \[ \cos \left(uy \cdot \left(2 \cdot \pi\right)\right) \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\left(-1 + maxCos\right) \cdot \left(ux \cdot ux\right)\right)\right)}
\] |
|---|---|
add-log-exp [=>]97.5 | \[ \color{blue}{\log \left(e^{\cos \left(uy \cdot \left(2 \cdot \pi\right)\right)}\right)} \cdot \sqrt{\mathsf{fma}\left(ux, \left(2 - maxCos\right) - maxCos, \left(1 - maxCos\right) \cdot \left(\left(-1 + maxCos\right) \cdot \left(ux \cdot ux\right)\right)\right)}
\] |
Taylor expanded in uy around inf 99.1%
Simplified99.0%
[Start]99.1 | \[ \cos \left(2 \cdot \left(uy \cdot \pi\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(maxCos - 1\right) \cdot {ux}^{2}\right)}
\] |
|---|---|
associate-*r* [=>]99.1 | \[ \cos \color{blue}{\left(\left(2 \cdot uy\right) \cdot \pi\right)} \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(maxCos - 1\right) \cdot {ux}^{2}\right)}
\] |
*-commutative [=>]99.1 | \[ \cos \color{blue}{\left(\pi \cdot \left(2 \cdot uy\right)\right)} \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(maxCos - 1\right) \cdot {ux}^{2}\right)}
\] |
*-commutative [=>]99.1 | \[ \cos \left(\pi \cdot \color{blue}{\left(uy \cdot 2\right)}\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(maxCos - 1\right) \cdot {ux}^{2}\right)}
\] |
*-commutative [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \color{blue}{\left({ux}^{2} \cdot \left(maxCos - 1\right)\right)}}
\] |
unpow2 [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\color{blue}{\left(ux \cdot ux\right)} \cdot \left(maxCos - 1\right)\right)}
\] |
sub-neg [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(ux \cdot ux\right) \cdot \color{blue}{\left(maxCos + \left(-1\right)\right)}\right)}
\] |
metadata-eval [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \left(\left(ux \cdot ux\right) \cdot \left(maxCos + \color{blue}{-1}\right)\right)}
\] |
associate-*r* [<=]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(1 - maxCos\right) \cdot \color{blue}{\left(ux \cdot \left(ux \cdot \left(maxCos + -1\right)\right)\right)}}
\] |
associate-*r* [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \color{blue}{\left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(ux \cdot \left(maxCos + -1\right)\right)}}
\] |
*-commutative [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(\left(1 - maxCos\right) \cdot ux\right) \cdot \color{blue}{\left(\left(maxCos + -1\right) \cdot ux\right)}}
\] |
metadata-eval [<=]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(\left(maxCos + \color{blue}{\left(-1\right)}\right) \cdot ux\right)}
\] |
sub-neg [<=]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(\color{blue}{\left(maxCos - 1\right)} \cdot ux\right)}
\] |
associate-*r* [=>]99.1 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\left(2 - 2 \cdot maxCos\right) \cdot ux + \color{blue}{\left(\left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(maxCos - 1\right)\right) \cdot ux}}
\] |
distribute-rgt-out [=>]99.0 | \[ \cos \left(\pi \cdot \left(uy \cdot 2\right)\right) \cdot \sqrt{\color{blue}{ux \cdot \left(\left(2 - 2 \cdot maxCos\right) + \left(\left(1 - maxCos\right) \cdot ux\right) \cdot \left(maxCos - 1\right)\right)}}
\] |
Final simplification99.0%
| Alternative 1 | |
|---|---|
| Accuracy | 96.4% |
| Cost | 16484 |
| Alternative 2 | |
|---|---|
| Accuracy | 99.0% |
| Cost | 10176 |
| Alternative 3 | |
|---|---|
| Accuracy | 95.5% |
| Cost | 10052 |
| Alternative 4 | |
|---|---|
| Accuracy | 80.0% |
| Cost | 6944 |
| Alternative 5 | |
|---|---|
| Accuracy | 79.9% |
| Cost | 6912 |
| Alternative 6 | |
|---|---|
| Accuracy | 79.9% |
| Cost | 3616 |
| Alternative 7 | |
|---|---|
| Accuracy | 77.7% |
| Cost | 3556 |
| Alternative 8 | |
|---|---|
| Accuracy | 78.9% |
| Cost | 3552 |
| Alternative 9 | |
|---|---|
| Accuracy | 77.7% |
| Cost | 3492 |
| Alternative 10 | |
|---|---|
| Accuracy | 64.9% |
| Cost | 3424 |
| Alternative 11 | |
|---|---|
| Accuracy | 62.2% |
| Cost | 3296 |
| Alternative 12 | |
|---|---|
| Accuracy | 6.6% |
| Cost | 3232 |
herbie shell --seed 2023135
(FPCore (ux uy maxCos)
:name "UniformSampleCone, x"
: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)))
(* (cos (* (* uy 2.0) PI)) (sqrt (- 1.0 (* (+ (- 1.0 ux) (* ux maxCos)) (+ (- 1.0 ux) (* ux maxCos)))))))