
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* (floor h) dX.v))
(t_1 (* (floor w) dY.u))
(t_2 (* (floor h) dY.v))
(t_3 (* (floor w) dX.u))
(t_4 (fmax (+ (* t_3 t_3) (* t_0 t_0)) (+ (* t_1 t_1) (* t_2 t_2))))
(t_5 (sqrt t_4))
(t_6 (fabs (- (* t_3 t_2) (* t_0 t_1)))))
(log2
(if (> (/ t_4 t_6) (floor maxAniso))
(/ t_5 (floor maxAniso))
(/ t_6 t_5)))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = floorf(h) * dX_46_v;
float t_1 = floorf(w) * dY_46_u;
float t_2 = floorf(h) * dY_46_v;
float t_3 = floorf(w) * dX_46_u;
float t_4 = fmaxf(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2)));
float t_5 = sqrtf(t_4);
float t_6 = fabsf(((t_3 * t_2) - (t_0 * t_1)));
float tmp;
if ((t_4 / t_6) > floorf(maxAniso)) {
tmp = t_5 / floorf(maxAniso);
} else {
tmp = t_6 / t_5;
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(floor(h) * dX_46_v) t_1 = Float32(floor(w) * dY_46_u) t_2 = Float32(floor(h) * dY_46_v) t_3 = Float32(floor(w) * dX_46_u) t_4 = (Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) != Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0))) ? Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) : ((Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) != Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2))) ? Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) : max(Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)), Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)))) t_5 = sqrt(t_4) t_6 = abs(Float32(Float32(t_3 * t_2) - Float32(t_0 * t_1))) tmp = Float32(0.0) if (Float32(t_4 / t_6) > floor(maxAniso)) tmp = Float32(t_5 / floor(maxAniso)); else tmp = Float32(t_6 / t_5); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = floor(h) * dX_46_v; t_1 = floor(w) * dY_46_u; t_2 = floor(h) * dY_46_v; t_3 = floor(w) * dX_46_u; t_4 = max(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2))); t_5 = sqrt(t_4); t_6 = abs(((t_3 * t_2) - (t_0 * t_1))); tmp = single(0.0); if ((t_4 / t_6) > floor(maxAniso)) tmp = t_5 / floor(maxAniso); else tmp = t_6 / t_5; end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left\lfloorh\right\rfloor \cdot dX.v\\
t_1 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_2 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_3 := \left\lfloorw\right\rfloor \cdot dX.u\\
t_4 := \mathsf{max}\left(t_3 \cdot t_3 + t_0 \cdot t_0, t_1 \cdot t_1 + t_2 \cdot t_2\right)\\
t_5 := \sqrt{t_4}\\
t_6 := \left|t_3 \cdot t_2 - t_0 \cdot t_1\right|\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t_4}{t_6} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{t_5}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\frac{t_6}{t_5}\\
\end{array}
\end{array}
\end{array}
Sampling outcomes in binary32 precision:
Herbie found 4 alternatives:
| Alternative | Accuracy | Speedup |
|---|
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* (floor h) dX.v))
(t_1 (* (floor w) dY.u))
(t_2 (* (floor h) dY.v))
(t_3 (* (floor w) dX.u))
(t_4 (fmax (+ (* t_3 t_3) (* t_0 t_0)) (+ (* t_1 t_1) (* t_2 t_2))))
(t_5 (sqrt t_4))
(t_6 (fabs (- (* t_3 t_2) (* t_0 t_1)))))
(log2
(if (> (/ t_4 t_6) (floor maxAniso))
(/ t_5 (floor maxAniso))
(/ t_6 t_5)))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = floorf(h) * dX_46_v;
float t_1 = floorf(w) * dY_46_u;
float t_2 = floorf(h) * dY_46_v;
float t_3 = floorf(w) * dX_46_u;
float t_4 = fmaxf(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2)));
float t_5 = sqrtf(t_4);
float t_6 = fabsf(((t_3 * t_2) - (t_0 * t_1)));
float tmp;
if ((t_4 / t_6) > floorf(maxAniso)) {
tmp = t_5 / floorf(maxAniso);
} else {
tmp = t_6 / t_5;
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(floor(h) * dX_46_v) t_1 = Float32(floor(w) * dY_46_u) t_2 = Float32(floor(h) * dY_46_v) t_3 = Float32(floor(w) * dX_46_u) t_4 = (Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) != Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0))) ? Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) : ((Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) != Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2))) ? Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) : max(Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)), Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)))) t_5 = sqrt(t_4) t_6 = abs(Float32(Float32(t_3 * t_2) - Float32(t_0 * t_1))) tmp = Float32(0.0) if (Float32(t_4 / t_6) > floor(maxAniso)) tmp = Float32(t_5 / floor(maxAniso)); else tmp = Float32(t_6 / t_5); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = floor(h) * dX_46_v; t_1 = floor(w) * dY_46_u; t_2 = floor(h) * dY_46_v; t_3 = floor(w) * dX_46_u; t_4 = max(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2))); t_5 = sqrt(t_4); t_6 = abs(((t_3 * t_2) - (t_0 * t_1))); tmp = single(0.0); if ((t_4 / t_6) > floor(maxAniso)) tmp = t_5 / floor(maxAniso); else tmp = t_6 / t_5; end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left\lfloorh\right\rfloor \cdot dX.v\\
t_1 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_2 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_3 := \left\lfloorw\right\rfloor \cdot dX.u\\
t_4 := \mathsf{max}\left(t_3 \cdot t_3 + t_0 \cdot t_0, t_1 \cdot t_1 + t_2 \cdot t_2\right)\\
t_5 := \sqrt{t_4}\\
t_6 := \left|t_3 \cdot t_2 - t_0 \cdot t_1\right|\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t_4}{t_6} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{t_5}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\frac{t_6}{t_5}\\
\end{array}
\end{array}
\end{array}
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dX.v (floor h)))
(t_1 (* (floor w) dY.u))
(t_2 (* (floor h) dY.v))
(t_3 (* dX.u (floor w)))
(t_4 (fmax (pow (hypot t_3 t_0) 2.0) (pow (hypot t_1 t_2) 2.0)))
(t_5 (* (floor w) (fabs (- (* dX.u dY.v) (* dX.v dY.u))))))
(log2
(if (> (/ t_4 (* (floor h) t_5)) (floor maxAniso))
(/
(sqrt (fmax (+ (* t_3 t_3) (* t_0 t_0)) (+ (* t_1 t_1) (* t_2 t_2))))
(floor maxAniso))
(* (floor h) (/ t_5 (sqrt t_4)))))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = dX_46_v * floorf(h);
float t_1 = floorf(w) * dY_46_u;
float t_2 = floorf(h) * dY_46_v;
float t_3 = dX_46_u * floorf(w);
float t_4 = fmaxf(powf(hypotf(t_3, t_0), 2.0f), powf(hypotf(t_1, t_2), 2.0f));
float t_5 = floorf(w) * fabsf(((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u)));
float tmp;
if ((t_4 / (floorf(h) * t_5)) > floorf(maxAniso)) {
tmp = sqrtf(fmaxf(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2)))) / floorf(maxAniso);
} else {
tmp = floorf(h) * (t_5 / sqrtf(t_4));
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(dX_46_v * floor(h)) t_1 = Float32(floor(w) * dY_46_u) t_2 = Float32(floor(h) * dY_46_v) t_3 = Float32(dX_46_u * floor(w)) t_4 = ((hypot(t_3, t_0) ^ Float32(2.0)) != (hypot(t_3, t_0) ^ Float32(2.0))) ? (hypot(t_1, t_2) ^ Float32(2.0)) : (((hypot(t_1, t_2) ^ Float32(2.0)) != (hypot(t_1, t_2) ^ Float32(2.0))) ? (hypot(t_3, t_0) ^ Float32(2.0)) : max((hypot(t_3, t_0) ^ Float32(2.0)), (hypot(t_1, t_2) ^ Float32(2.0)))) t_5 = Float32(floor(w) * abs(Float32(Float32(dX_46_u * dY_46_v) - Float32(dX_46_v * dY_46_u)))) tmp = Float32(0.0) if (Float32(t_4 / Float32(floor(h) * t_5)) > floor(maxAniso)) tmp = Float32(sqrt(((Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) != Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0))) ? Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) : ((Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)) != Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2))) ? Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) : max(Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)), Float32(Float32(t_1 * t_1) + Float32(t_2 * t_2)))))) / floor(maxAniso)); else tmp = Float32(floor(h) * Float32(t_5 / sqrt(t_4))); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = dX_46_v * floor(h); t_1 = floor(w) * dY_46_u; t_2 = floor(h) * dY_46_v; t_3 = dX_46_u * floor(w); t_4 = max((hypot(t_3, t_0) ^ single(2.0)), (hypot(t_1, t_2) ^ single(2.0))); t_5 = floor(w) * abs(((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u))); tmp = single(0.0); if ((t_4 / (floor(h) * t_5)) > floor(maxAniso)) tmp = sqrt(max(((t_3 * t_3) + (t_0 * t_0)), ((t_1 * t_1) + (t_2 * t_2)))) / floor(maxAniso); else tmp = floor(h) * (t_5 / sqrt(t_4)); end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_1 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_2 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_3 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_4 := \mathsf{max}\left({\left(\mathsf{hypot}\left(t_3, t_0\right)\right)}^{2}, {\left(\mathsf{hypot}\left(t_1, t_2\right)\right)}^{2}\right)\\
t_5 := \left\lfloorw\right\rfloor \cdot \left|dX.u \cdot dY.v - dX.v \cdot dY.u\right|\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t_4}{\left\lfloorh\right\rfloor \cdot t_5} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{\sqrt{\mathsf{max}\left(t_3 \cdot t_3 + t_0 \cdot t_0, t_1 \cdot t_1 + t_2 \cdot t_2\right)}}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\left\lfloorh\right\rfloor \cdot \frac{t_5}{\sqrt{t_4}}\\
\end{array}
\end{array}
\end{array}
Initial program 77.2%
expm1-log1p-u77.2%
expm1-udef77.1%
Applied egg-rr77.1%
Simplified77.2%
expm1-log1p-u77.2%
expm1-udef77.2%
Applied egg-rr77.2%
Simplified77.2%
Final simplification77.2%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (- (* dX.u dY.v) (* dX.v dY.u)))
(t_1 (* dX.v (floor h)))
(t_2 (* (floor w) dY.u))
(t_3 (* dX.u (floor w)))
(t_4 (* (floor h) dY.v))
(t_5 (fmax (pow (hypot t_3 t_1) 2.0) (pow (hypot t_2 t_4) 2.0))))
(log2
(if (> (/ t_5 (* (floor h) (* (floor w) (fabs t_0)))) (floor maxAniso))
(/
(sqrt
(fmax
(+ (* t_3 t_3) (* t_1 t_1))
(+ (* t_4 t_4) (exp (* 2.0 (log t_2))))))
(floor maxAniso))
(/ (fabs (* (floor h) (* (floor w) t_0))) (sqrt t_5))))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = (dX_46_u * dY_46_v) - (dX_46_v * dY_46_u);
float t_1 = dX_46_v * floorf(h);
float t_2 = floorf(w) * dY_46_u;
float t_3 = dX_46_u * floorf(w);
float t_4 = floorf(h) * dY_46_v;
float t_5 = fmaxf(powf(hypotf(t_3, t_1), 2.0f), powf(hypotf(t_2, t_4), 2.0f));
float tmp;
if ((t_5 / (floorf(h) * (floorf(w) * fabsf(t_0)))) > floorf(maxAniso)) {
tmp = sqrtf(fmaxf(((t_3 * t_3) + (t_1 * t_1)), ((t_4 * t_4) + expf((2.0f * logf(t_2)))))) / floorf(maxAniso);
} else {
tmp = fabsf((floorf(h) * (floorf(w) * t_0))) / sqrtf(t_5);
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(Float32(dX_46_u * dY_46_v) - Float32(dX_46_v * dY_46_u)) t_1 = Float32(dX_46_v * floor(h)) t_2 = Float32(floor(w) * dY_46_u) t_3 = Float32(dX_46_u * floor(w)) t_4 = Float32(floor(h) * dY_46_v) t_5 = ((hypot(t_3, t_1) ^ Float32(2.0)) != (hypot(t_3, t_1) ^ Float32(2.0))) ? (hypot(t_2, t_4) ^ Float32(2.0)) : (((hypot(t_2, t_4) ^ Float32(2.0)) != (hypot(t_2, t_4) ^ Float32(2.0))) ? (hypot(t_3, t_1) ^ Float32(2.0)) : max((hypot(t_3, t_1) ^ Float32(2.0)), (hypot(t_2, t_4) ^ Float32(2.0)))) tmp = Float32(0.0) if (Float32(t_5 / Float32(floor(h) * Float32(floor(w) * abs(t_0)))) > floor(maxAniso)) tmp = Float32(sqrt(((Float32(Float32(t_3 * t_3) + Float32(t_1 * t_1)) != Float32(Float32(t_3 * t_3) + Float32(t_1 * t_1))) ? Float32(Float32(t_4 * t_4) + exp(Float32(Float32(2.0) * log(t_2)))) : ((Float32(Float32(t_4 * t_4) + exp(Float32(Float32(2.0) * log(t_2)))) != Float32(Float32(t_4 * t_4) + exp(Float32(Float32(2.0) * log(t_2))))) ? Float32(Float32(t_3 * t_3) + Float32(t_1 * t_1)) : max(Float32(Float32(t_3 * t_3) + Float32(t_1 * t_1)), Float32(Float32(t_4 * t_4) + exp(Float32(Float32(2.0) * log(t_2)))))))) / floor(maxAniso)); else tmp = Float32(abs(Float32(floor(h) * Float32(floor(w) * t_0))) / sqrt(t_5)); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = (dX_46_u * dY_46_v) - (dX_46_v * dY_46_u); t_1 = dX_46_v * floor(h); t_2 = floor(w) * dY_46_u; t_3 = dX_46_u * floor(w); t_4 = floor(h) * dY_46_v; t_5 = max((hypot(t_3, t_1) ^ single(2.0)), (hypot(t_2, t_4) ^ single(2.0))); tmp = single(0.0); if ((t_5 / (floor(h) * (floor(w) * abs(t_0)))) > floor(maxAniso)) tmp = sqrt(max(((t_3 * t_3) + (t_1 * t_1)), ((t_4 * t_4) + exp((single(2.0) * log(t_2)))))) / floor(maxAniso); else tmp = abs((floor(h) * (floor(w) * t_0))) / sqrt(t_5); end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.u \cdot dY.v - dX.v \cdot dY.u\\
t_1 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_2 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_3 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_4 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_5 := \mathsf{max}\left({\left(\mathsf{hypot}\left(t_3, t_1\right)\right)}^{2}, {\left(\mathsf{hypot}\left(t_2, t_4\right)\right)}^{2}\right)\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t_5}{\left\lfloorh\right\rfloor \cdot \left(\left\lfloorw\right\rfloor \cdot \left|t_0\right|\right)} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{\sqrt{\mathsf{max}\left(t_3 \cdot t_3 + t_1 \cdot t_1, t_4 \cdot t_4 + e^{2 \cdot \log t_2}\right)}}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\frac{\left|\left\lfloorh\right\rfloor \cdot \left(\left\lfloorw\right\rfloor \cdot t_0\right)\right|}{\sqrt{t_5}}\\
\end{array}
\end{array}
\end{array}
Initial program 77.2%
pow177.2%
pow-to-exp77.1%
pow277.1%
log-pow64.4%
Applied egg-rr64.4%
expm1-log1p-u77.2%
expm1-udef77.2%
Applied egg-rr64.4%
Simplified64.4%
expm1-log1p-u77.2%
expm1-udef77.1%
Applied egg-rr64.3%
expm1-def45.9%
expm1-log1p45.9%
Simplified64.4%
Final simplification64.4%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dX.v (floor h)))
(t_1 (* (floor h) dY.v))
(t_2 (* (floor w) dY.u))
(t_3 (* dX.u (floor w)))
(t_4 (pow (hypot t_3 t_0) 2.0)))
(log2
(if (>
(/
(- (fmax t_4 (pow (hypot t_1 t_2) 2.0)))
(* dX.v (* (floor w) (* (floor h) dY.u))))
(floor maxAniso))
(/
(sqrt (fmax (+ (* t_3 t_3) (* t_0 t_0)) (+ (* t_2 t_2) (* t_1 t_1))))
(floor maxAniso))
(/
(fabs (* (floor h) (* (floor w) (- (* dX.u dY.v) (* dX.v dY.u)))))
(sqrt (fmax t_4 (pow (hypot t_2 t_1) 2.0))))))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = dX_46_v * floorf(h);
float t_1 = floorf(h) * dY_46_v;
float t_2 = floorf(w) * dY_46_u;
float t_3 = dX_46_u * floorf(w);
float t_4 = powf(hypotf(t_3, t_0), 2.0f);
float tmp;
if ((-fmaxf(t_4, powf(hypotf(t_1, t_2), 2.0f)) / (dX_46_v * (floorf(w) * (floorf(h) * dY_46_u)))) > floorf(maxAniso)) {
tmp = sqrtf(fmaxf(((t_3 * t_3) + (t_0 * t_0)), ((t_2 * t_2) + (t_1 * t_1)))) / floorf(maxAniso);
} else {
tmp = fabsf((floorf(h) * (floorf(w) * ((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u))))) / sqrtf(fmaxf(t_4, powf(hypotf(t_2, t_1), 2.0f)));
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(dX_46_v * floor(h)) t_1 = Float32(floor(h) * dY_46_v) t_2 = Float32(floor(w) * dY_46_u) t_3 = Float32(dX_46_u * floor(w)) t_4 = hypot(t_3, t_0) ^ Float32(2.0) tmp = Float32(0.0) if (Float32(Float32(-((t_4 != t_4) ? (hypot(t_1, t_2) ^ Float32(2.0)) : (((hypot(t_1, t_2) ^ Float32(2.0)) != (hypot(t_1, t_2) ^ Float32(2.0))) ? t_4 : max(t_4, (hypot(t_1, t_2) ^ Float32(2.0)))))) / Float32(dX_46_v * Float32(floor(w) * Float32(floor(h) * dY_46_u)))) > floor(maxAniso)) tmp = Float32(sqrt(((Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) != Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0))) ? Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)) : ((Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)) != Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1))) ? Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) : max(Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)), Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)))))) / floor(maxAniso)); else tmp = Float32(abs(Float32(floor(h) * Float32(floor(w) * Float32(Float32(dX_46_u * dY_46_v) - Float32(dX_46_v * dY_46_u))))) / sqrt(((t_4 != t_4) ? (hypot(t_2, t_1) ^ Float32(2.0)) : (((hypot(t_2, t_1) ^ Float32(2.0)) != (hypot(t_2, t_1) ^ Float32(2.0))) ? t_4 : max(t_4, (hypot(t_2, t_1) ^ Float32(2.0))))))); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = dX_46_v * floor(h); t_1 = floor(h) * dY_46_v; t_2 = floor(w) * dY_46_u; t_3 = dX_46_u * floor(w); t_4 = hypot(t_3, t_0) ^ single(2.0); tmp = single(0.0); if ((-max(t_4, (hypot(t_1, t_2) ^ single(2.0))) / (dX_46_v * (floor(w) * (floor(h) * dY_46_u)))) > floor(maxAniso)) tmp = sqrt(max(((t_3 * t_3) + (t_0 * t_0)), ((t_2 * t_2) + (t_1 * t_1)))) / floor(maxAniso); else tmp = abs((floor(h) * (floor(w) * ((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u))))) / sqrt(max(t_4, (hypot(t_2, t_1) ^ single(2.0)))); end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_1 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_2 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_3 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_4 := {\left(\mathsf{hypot}\left(t_3, t_0\right)\right)}^{2}\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{-\mathsf{max}\left(t_4, {\left(\mathsf{hypot}\left(t_1, t_2\right)\right)}^{2}\right)}{dX.v \cdot \left(\left\lfloorw\right\rfloor \cdot \left(\left\lfloorh\right\rfloor \cdot dY.u\right)\right)} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{\sqrt{\mathsf{max}\left(t_3 \cdot t_3 + t_0 \cdot t_0, t_2 \cdot t_2 + t_1 \cdot t_1\right)}}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\frac{\left|\left\lfloorh\right\rfloor \cdot \left(\left\lfloorw\right\rfloor \cdot \left(dX.u \cdot dY.v - dX.v \cdot dY.u\right)\right)\right|}{\sqrt{\mathsf{max}\left(t_4, {\left(\mathsf{hypot}\left(t_2, t_1\right)\right)}^{2}\right)}}\\
\end{array}
\end{array}
\end{array}
Initial program 77.2%
expm1-log1p-u77.2%
expm1-udef77.2%
Applied egg-rr77.2%
Simplified77.2%
Applied egg-rr44.8%
expm1-def44.8%
expm1-log1p44.8%
*-commutative44.8%
*-commutative44.8%
associate-*r*44.8%
*-commutative44.8%
associate-*l*44.8%
Simplified44.8%
Taylor expanded in dX.u around 0 45.9%
associate-*r/45.9%
*-commutative45.9%
*-commutative45.9%
*-commutative45.9%
*-commutative45.9%
mul-1-neg45.9%
Simplified45.9%
expm1-log1p-u77.2%
expm1-udef77.1%
Applied egg-rr45.3%
expm1-def45.9%
expm1-log1p45.9%
Simplified45.9%
Final simplification45.9%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dX.v (floor h)))
(t_1 (* (floor h) dY.v))
(t_2 (* (floor w) dY.u))
(t_3 (* dX.u (floor w)))
(t_4 (pow (hypot t_3 t_0) 2.0)))
(log2
(if (>
(/ (fmax t_4 (pow (hypot t_1 t_2) 2.0)) (* t_3 t_1))
(floor maxAniso))
(/
(sqrt (fmax (+ (* t_3 t_3) (* t_0 t_0)) (+ (* t_2 t_2) (* t_1 t_1))))
(floor maxAniso))
(*
(floor h)
(/
(* (floor w) (fabs (- (* dX.u dY.v) (* dX.v dY.u))))
(sqrt (fmax t_4 (pow (hypot t_2 t_1) 2.0)))))))))
float code(float w, float h, float dX_46_u, float dX_46_v, float dY_46_u, float dY_46_v, float maxAniso) {
float t_0 = dX_46_v * floorf(h);
float t_1 = floorf(h) * dY_46_v;
float t_2 = floorf(w) * dY_46_u;
float t_3 = dX_46_u * floorf(w);
float t_4 = powf(hypotf(t_3, t_0), 2.0f);
float tmp;
if ((fmaxf(t_4, powf(hypotf(t_1, t_2), 2.0f)) / (t_3 * t_1)) > floorf(maxAniso)) {
tmp = sqrtf(fmaxf(((t_3 * t_3) + (t_0 * t_0)), ((t_2 * t_2) + (t_1 * t_1)))) / floorf(maxAniso);
} else {
tmp = floorf(h) * ((floorf(w) * fabsf(((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u)))) / sqrtf(fmaxf(t_4, powf(hypotf(t_2, t_1), 2.0f))));
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(dX_46_v * floor(h)) t_1 = Float32(floor(h) * dY_46_v) t_2 = Float32(floor(w) * dY_46_u) t_3 = Float32(dX_46_u * floor(w)) t_4 = hypot(t_3, t_0) ^ Float32(2.0) tmp = Float32(0.0) if (Float32(((t_4 != t_4) ? (hypot(t_1, t_2) ^ Float32(2.0)) : (((hypot(t_1, t_2) ^ Float32(2.0)) != (hypot(t_1, t_2) ^ Float32(2.0))) ? t_4 : max(t_4, (hypot(t_1, t_2) ^ Float32(2.0))))) / Float32(t_3 * t_1)) > floor(maxAniso)) tmp = Float32(sqrt(((Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) != Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0))) ? Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)) : ((Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)) != Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1))) ? Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)) : max(Float32(Float32(t_3 * t_3) + Float32(t_0 * t_0)), Float32(Float32(t_2 * t_2) + Float32(t_1 * t_1)))))) / floor(maxAniso)); else tmp = Float32(floor(h) * Float32(Float32(floor(w) * abs(Float32(Float32(dX_46_u * dY_46_v) - Float32(dX_46_v * dY_46_u)))) / sqrt(((t_4 != t_4) ? (hypot(t_2, t_1) ^ Float32(2.0)) : (((hypot(t_2, t_1) ^ Float32(2.0)) != (hypot(t_2, t_1) ^ Float32(2.0))) ? t_4 : max(t_4, (hypot(t_2, t_1) ^ Float32(2.0)))))))); end return log2(tmp) end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = dX_46_v * floor(h); t_1 = floor(h) * dY_46_v; t_2 = floor(w) * dY_46_u; t_3 = dX_46_u * floor(w); t_4 = hypot(t_3, t_0) ^ single(2.0); tmp = single(0.0); if ((max(t_4, (hypot(t_1, t_2) ^ single(2.0))) / (t_3 * t_1)) > floor(maxAniso)) tmp = sqrt(max(((t_3 * t_3) + (t_0 * t_0)), ((t_2 * t_2) + (t_1 * t_1)))) / floor(maxAniso); else tmp = floor(h) * ((floor(w) * abs(((dX_46_u * dY_46_v) - (dX_46_v * dY_46_u)))) / sqrt(max(t_4, (hypot(t_2, t_1) ^ single(2.0))))); end tmp_2 = log2(tmp); end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_1 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_2 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_3 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_4 := {\left(\mathsf{hypot}\left(t_3, t_0\right)\right)}^{2}\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{\mathsf{max}\left(t_4, {\left(\mathsf{hypot}\left(t_1, t_2\right)\right)}^{2}\right)}{t_3 \cdot t_1} > \left\lfloormaxAniso\right\rfloor:\\
\;\;\;\;\frac{\sqrt{\mathsf{max}\left(t_3 \cdot t_3 + t_0 \cdot t_0, t_2 \cdot t_2 + t_1 \cdot t_1\right)}}{\left\lfloormaxAniso\right\rfloor}\\
\mathbf{else}:\\
\;\;\;\;\left\lfloorh\right\rfloor \cdot \frac{\left\lfloorw\right\rfloor \cdot \left|dX.u \cdot dY.v - dX.v \cdot dY.u\right|}{\sqrt{\mathsf{max}\left(t_4, {\left(\mathsf{hypot}\left(t_2, t_1\right)\right)}^{2}\right)}}\\
\end{array}
\end{array}
\end{array}
Initial program 77.2%
expm1-log1p-u77.2%
expm1-udef77.2%
Applied egg-rr77.2%
Simplified77.2%
Applied egg-rr44.8%
expm1-def44.8%
expm1-log1p44.8%
*-commutative44.8%
*-commutative44.8%
associate-*r*44.8%
*-commutative44.8%
associate-*l*44.8%
Simplified44.8%
expm1-log1p-u77.2%
expm1-udef77.1%
Applied egg-rr44.1%
Simplified44.8%
Taylor expanded in dX.u around inf 44.7%
*-commutative44.7%
*-commutative44.7%
*-commutative44.7%
associate-*r*44.7%
associate-*l*44.7%
*-commutative44.7%
*-commutative44.7%
Simplified44.7%
Final simplification44.7%
herbie shell --seed 2024024
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:name "Anisotropic x16 LOD (LOD)"
:precision binary32
:pre (and (and (and (and (and (and (and (<= 1.0 w) (<= w 16384.0)) (and (<= 1.0 h) (<= h 16384.0))) (and (<= 1e-20 (fabs dX.u)) (<= (fabs dX.u) 1e+20))) (and (<= 1e-20 (fabs dX.v)) (<= (fabs dX.v) 1e+20))) (and (<= 1e-20 (fabs dY.u)) (<= (fabs dY.u) 1e+20))) (and (<= 1e-20 (fabs dY.v)) (<= (fabs dY.v) 1e+20))) (== maxAniso 16.0))
(log2 (if (> (/ (fmax (+ (* (* (floor w) dX.u) (* (floor w) dX.u)) (* (* (floor h) dX.v) (* (floor h) dX.v))) (+ (* (* (floor w) dY.u) (* (floor w) dY.u)) (* (* (floor h) dY.v) (* (floor h) dY.v)))) (fabs (- (* (* (floor w) dX.u) (* (floor h) dY.v)) (* (* (floor h) dX.v) (* (floor w) dY.u))))) (floor maxAniso)) (/ (sqrt (fmax (+ (* (* (floor w) dX.u) (* (floor w) dX.u)) (* (* (floor h) dX.v) (* (floor h) dX.v))) (+ (* (* (floor w) dY.u) (* (floor w) dY.u)) (* (* (floor h) dY.v) (* (floor h) dY.v))))) (floor maxAniso)) (/ (fabs (- (* (* (floor w) dX.u) (* (floor h) dY.v)) (* (* (floor h) dX.v) (* (floor w) dY.u)))) (sqrt (fmax (+ (* (* (floor w) dX.u) (* (floor w) dX.u)) (* (* (floor h) dX.v) (* (floor h) dX.v))) (+ (* (* (floor w) dY.u) (* (floor w) dY.u)) (* (* (floor h) dY.v) (* (floor h) dY.v)))))))))