
(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 w) dX.u))
(t_3 (+ (* t_2 t_2) (* t_0 t_0)))
(t_4 (* (floor h) dY.v))
(t_5 (+ (* t_1 t_1) (* t_4 t_4)))
(t_6 (/ 1.0 (sqrt (fmax t_3 t_5)))))
(if (>= t_3 t_5) (* t_6 t_0) (* t_6 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 = floorf(h) * dX_46_v;
float t_1 = floorf(w) * dY_46_u;
float t_2 = floorf(w) * dX_46_u;
float t_3 = (t_2 * t_2) + (t_0 * t_0);
float t_4 = floorf(h) * dY_46_v;
float t_5 = (t_1 * t_1) + (t_4 * t_4);
float t_6 = 1.0f / sqrtf(fmaxf(t_3, t_5));
float tmp;
if (t_3 >= t_5) {
tmp = t_6 * t_0;
} else {
tmp = t_6 * t_4;
}
return 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(w) * dX_46_u) t_3 = Float32(Float32(t_2 * t_2) + Float32(t_0 * t_0)) t_4 = Float32(floor(h) * dY_46_v) t_5 = Float32(Float32(t_1 * t_1) + Float32(t_4 * t_4)) t_6 = Float32(Float32(1.0) / sqrt(((t_3 != t_3) ? t_5 : ((t_5 != t_5) ? t_3 : max(t_3, t_5))))) tmp = Float32(0.0) if (t_3 >= t_5) tmp = Float32(t_6 * t_0); else tmp = Float32(t_6 * t_4); end return 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(w) * dX_46_u; t_3 = (t_2 * t_2) + (t_0 * t_0); t_4 = floor(h) * dY_46_v; t_5 = (t_1 * t_1) + (t_4 * t_4); t_6 = single(1.0) / sqrt(max(t_3, t_5)); tmp = single(0.0); if (t_3 >= t_5) tmp = t_6 * t_0; else tmp = t_6 * t_4; end tmp_2 = 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\lfloorw\right\rfloor \cdot dX.u\\
t_3 := t_2 \cdot t_2 + t_0 \cdot t_0\\
t_4 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_5 := t_1 \cdot t_1 + t_4 \cdot t_4\\
t_6 := \frac{1}{\sqrt{\mathsf{max}\left(t_3, t_5\right)}}\\
\mathbf{if}\;t_3 \geq t_5:\\
\;\;\;\;t_6 \cdot t_0\\
\mathbf{else}:\\
\;\;\;\;t_6 \cdot t_4\\
\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 w) dX.u))
(t_3 (+ (* t_2 t_2) (* t_0 t_0)))
(t_4 (* (floor h) dY.v))
(t_5 (+ (* t_1 t_1) (* t_4 t_4)))
(t_6 (/ 1.0 (sqrt (fmax t_3 t_5)))))
(if (>= t_3 t_5) (* t_6 t_0) (* t_6 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 = floorf(h) * dX_46_v;
float t_1 = floorf(w) * dY_46_u;
float t_2 = floorf(w) * dX_46_u;
float t_3 = (t_2 * t_2) + (t_0 * t_0);
float t_4 = floorf(h) * dY_46_v;
float t_5 = (t_1 * t_1) + (t_4 * t_4);
float t_6 = 1.0f / sqrtf(fmaxf(t_3, t_5));
float tmp;
if (t_3 >= t_5) {
tmp = t_6 * t_0;
} else {
tmp = t_6 * t_4;
}
return 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(w) * dX_46_u) t_3 = Float32(Float32(t_2 * t_2) + Float32(t_0 * t_0)) t_4 = Float32(floor(h) * dY_46_v) t_5 = Float32(Float32(t_1 * t_1) + Float32(t_4 * t_4)) t_6 = Float32(Float32(1.0) / sqrt(((t_3 != t_3) ? t_5 : ((t_5 != t_5) ? t_3 : max(t_3, t_5))))) tmp = Float32(0.0) if (t_3 >= t_5) tmp = Float32(t_6 * t_0); else tmp = Float32(t_6 * t_4); end return 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(w) * dX_46_u; t_3 = (t_2 * t_2) + (t_0 * t_0); t_4 = floor(h) * dY_46_v; t_5 = (t_1 * t_1) + (t_4 * t_4); t_6 = single(1.0) / sqrt(max(t_3, t_5)); tmp = single(0.0); if (t_3 >= t_5) tmp = t_6 * t_0; else tmp = t_6 * t_4; end tmp_2 = 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\lfloorw\right\rfloor \cdot dX.u\\
t_3 := t_2 \cdot t_2 + t_0 \cdot t_0\\
t_4 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_5 := t_1 \cdot t_1 + t_4 \cdot t_4\\
t_6 := \frac{1}{\sqrt{\mathsf{max}\left(t_3, t_5\right)}}\\
\mathbf{if}\;t_3 \geq t_5:\\
\;\;\;\;t_6 \cdot t_0\\
\mathbf{else}:\\
\;\;\;\;t_6 \cdot t_4\\
\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))))
(if (>= (+ (pow t_3 2.0) (pow t_0 2.0)) (fma t_1 t_1 (pow t_2 2.0)))
(/ t_0 (pow t_4 0.5))
(pow (/ (sqrt t_4) t_2) -1.0))))
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(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 tmp;
if ((powf(t_3, 2.0f) + powf(t_0, 2.0f)) >= fmaf(t_1, t_1, powf(t_2, 2.0f))) {
tmp = t_0 / powf(t_4, 0.5f);
} else {
tmp = powf((sqrtf(t_4) / t_2), -1.0f);
}
return 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)))) tmp = Float32(0.0) if (Float32((t_3 ^ Float32(2.0)) + (t_0 ^ Float32(2.0))) >= fma(t_1, t_1, (t_2 ^ Float32(2.0)))) tmp = Float32(t_0 / (t_4 ^ Float32(0.5))); else tmp = Float32(sqrt(t_4) / t_2) ^ Float32(-1.0); end return 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)\\
\mathbf{if}\;{t_3}^{2} + {t_0}^{2} \geq \mathsf{fma}\left(t_1, t_1, {t_2}^{2}\right):\\
\;\;\;\;\frac{t_0}{{t_4}^{0.5}}\\
\mathbf{else}:\\
\;\;\;\;{\left(\frac{\sqrt{t_4}}{t_2}\right)}^{-1}\\
\end{array}
\end{array}
Initial program 76.2%
Simplified76.3%
Applied egg-rr76.4%
Applied egg-rr76.4%
Taylor expanded in w around 0 76.4%
fma-udef76.4%
unpow276.4%
*-commutative76.4%
unpow276.4%
unpow276.4%
swap-sqr76.4%
unpow276.4%
*-commutative76.4%
*-commutative76.4%
*-commutative76.4%
*-commutative76.4%
unpow276.4%
unpow276.4%
swap-sqr76.4%
unpow276.4%
Simplified76.4%
Final simplification76.4%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dX.v (floor h)))
(t_1 (* t_0 t_0))
(t_2 (* (floor w) dY.u))
(t_3 (* (floor h) dY.v))
(t_4 (+ (* t_2 t_2) (* t_3 t_3)))
(t_5 (* dX.u (floor w)))
(t_6 (/ 1.0 (sqrt (fmax (+ t_1 (* t_5 t_5)) t_4)))))
(if (>= (+ (pow t_5 2.0) t_1) t_4) (* t_0 t_6) (* t_3 t_6))))
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 = t_0 * t_0;
float t_2 = floorf(w) * dY_46_u;
float t_3 = floorf(h) * dY_46_v;
float t_4 = (t_2 * t_2) + (t_3 * t_3);
float t_5 = dX_46_u * floorf(w);
float t_6 = 1.0f / sqrtf(fmaxf((t_1 + (t_5 * t_5)), t_4));
float tmp;
if ((powf(t_5, 2.0f) + t_1) >= t_4) {
tmp = t_0 * t_6;
} else {
tmp = t_3 * t_6;
}
return 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(t_0 * t_0) t_2 = Float32(floor(w) * dY_46_u) t_3 = Float32(floor(h) * dY_46_v) t_4 = Float32(Float32(t_2 * t_2) + Float32(t_3 * t_3)) t_5 = Float32(dX_46_u * floor(w)) t_6 = Float32(Float32(1.0) / sqrt(((Float32(t_1 + Float32(t_5 * t_5)) != Float32(t_1 + Float32(t_5 * t_5))) ? t_4 : ((t_4 != t_4) ? Float32(t_1 + Float32(t_5 * t_5)) : max(Float32(t_1 + Float32(t_5 * t_5)), t_4))))) tmp = Float32(0.0) if (Float32((t_5 ^ Float32(2.0)) + t_1) >= t_4) tmp = Float32(t_0 * t_6); else tmp = Float32(t_3 * t_6); end return 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 = t_0 * t_0; t_2 = floor(w) * dY_46_u; t_3 = floor(h) * dY_46_v; t_4 = (t_2 * t_2) + (t_3 * t_3); t_5 = dX_46_u * floor(w); t_6 = single(1.0) / sqrt(max((t_1 + (t_5 * t_5)), t_4)); tmp = single(0.0); if (((t_5 ^ single(2.0)) + t_1) >= t_4) tmp = t_0 * t_6; else tmp = t_3 * t_6; end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_1 := t_0 \cdot t_0\\
t_2 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_3 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_4 := t_2 \cdot t_2 + t_3 \cdot t_3\\
t_5 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_6 := \frac{1}{\sqrt{\mathsf{max}\left(t_1 + t_5 \cdot t_5, t_4\right)}}\\
\mathbf{if}\;{t_5}^{2} + t_1 \geq t_4:\\
\;\;\;\;t_0 \cdot t_6\\
\mathbf{else}:\\
\;\;\;\;t_3 \cdot t_6\\
\end{array}
\end{array}
Initial program 76.2%
pow276.1%
Applied egg-rr76.2%
Final simplification76.2%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dX.v (floor h)))
(t_1 (* t_0 t_0))
(t_2 (* (floor w) dY.u))
(t_3 (* (floor h) dY.v))
(t_4 (+ (* t_2 t_2) (* t_3 t_3)))
(t_5 (* dX.u (floor w))))
(if (>= (+ (pow t_5 2.0) t_1) t_4)
(* t_0 (/ 1.0 (sqrt (fmax (+ t_1 (* t_5 t_5)) t_4))))
(*
t_3
(/
1.0
(pow
(fmax (pow (hypot t_5 t_0) 2.0) (pow (hypot t_2 t_3) 2.0))
0.5))))))
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_v * floorf(h);
float t_1 = t_0 * t_0;
float t_2 = floorf(w) * dY_46_u;
float t_3 = floorf(h) * dY_46_v;
float t_4 = (t_2 * t_2) + (t_3 * t_3);
float t_5 = dX_46_u * floorf(w);
float tmp;
if ((powf(t_5, 2.0f) + t_1) >= t_4) {
tmp = t_0 * (1.0f / sqrtf(fmaxf((t_1 + (t_5 * t_5)), t_4)));
} else {
tmp = t_3 * (1.0f / powf(fmaxf(powf(hypotf(t_5, t_0), 2.0f), powf(hypotf(t_2, t_3), 2.0f)), 0.5f));
}
return 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(t_0 * t_0) t_2 = Float32(floor(w) * dY_46_u) t_3 = Float32(floor(h) * dY_46_v) t_4 = Float32(Float32(t_2 * t_2) + Float32(t_3 * t_3)) t_5 = Float32(dX_46_u * floor(w)) tmp = Float32(0.0) if (Float32((t_5 ^ Float32(2.0)) + t_1) >= t_4) tmp = Float32(t_0 * Float32(Float32(1.0) / sqrt(((Float32(t_1 + Float32(t_5 * t_5)) != Float32(t_1 + Float32(t_5 * t_5))) ? t_4 : ((t_4 != t_4) ? Float32(t_1 + Float32(t_5 * t_5)) : max(Float32(t_1 + Float32(t_5 * t_5)), t_4)))))); else tmp = Float32(t_3 * Float32(Float32(1.0) / ((((hypot(t_5, t_0) ^ Float32(2.0)) != (hypot(t_5, t_0) ^ Float32(2.0))) ? (hypot(t_2, t_3) ^ Float32(2.0)) : (((hypot(t_2, t_3) ^ Float32(2.0)) != (hypot(t_2, t_3) ^ Float32(2.0))) ? (hypot(t_5, t_0) ^ Float32(2.0)) : max((hypot(t_5, t_0) ^ Float32(2.0)), (hypot(t_2, t_3) ^ Float32(2.0))))) ^ Float32(0.5)))); end return 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 = t_0 * t_0; t_2 = floor(w) * dY_46_u; t_3 = floor(h) * dY_46_v; t_4 = (t_2 * t_2) + (t_3 * t_3); t_5 = dX_46_u * floor(w); tmp = single(0.0); if (((t_5 ^ single(2.0)) + t_1) >= t_4) tmp = t_0 * (single(1.0) / sqrt(max((t_1 + (t_5 * t_5)), t_4))); else tmp = t_3 * (single(1.0) / (max((hypot(t_5, t_0) ^ single(2.0)), (hypot(t_2, t_3) ^ single(2.0))) ^ single(0.5))); end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_1 := t_0 \cdot t_0\\
t_2 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_3 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_4 := t_2 \cdot t_2 + t_3 \cdot t_3\\
t_5 := dX.u \cdot \left\lfloorw\right\rfloor\\
\mathbf{if}\;{t_5}^{2} + t_1 \geq t_4:\\
\;\;\;\;t_0 \cdot \frac{1}{\sqrt{\mathsf{max}\left(t_1 + t_5 \cdot t_5, t_4\right)}}\\
\mathbf{else}:\\
\;\;\;\;t_3 \cdot \frac{1}{{\left(\mathsf{max}\left({\left(\mathsf{hypot}\left(t_5, t_0\right)\right)}^{2}, {\left(\mathsf{hypot}\left(t_2, t_3\right)\right)}^{2}\right)\right)}^{0.5}}\\
\end{array}
\end{array}
Initial program 76.2%
pow276.2%
pow-to-exp59.9%
Applied egg-rr59.9%
exp-to-pow76.2%
pow276.2%
associate-*r*76.1%
Applied egg-rr76.1%
pow276.1%
Applied egg-rr76.1%
pow1/276.1%
Applied egg-rr76.2%
Final simplification76.2%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* (floor w) dY.u))
(t_1 (* t_0 t_0))
(t_2 (* (floor h) dY.v))
(t_3 (+ t_1 (* t_2 t_2)))
(t_4 (* dX.u (floor w)))
(t_5 (* dX.v (floor h)))
(t_6 (+ (* t_5 t_5) (* t_4 t_4))))
(if (>= (+ (pow t_4 2.0) (pow t_5 2.0)) t_3)
(* t_5 (/ 1.0 (sqrt (fmax t_6 t_3))))
(* t_2 (/ 1.0 (sqrt (fmax t_6 (+ t_1 (* dY.v (* (floor h) t_2))))))))))
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(w) * dY_46_u;
float t_1 = t_0 * t_0;
float t_2 = floorf(h) * dY_46_v;
float t_3 = t_1 + (t_2 * t_2);
float t_4 = dX_46_u * floorf(w);
float t_5 = dX_46_v * floorf(h);
float t_6 = (t_5 * t_5) + (t_4 * t_4);
float tmp;
if ((powf(t_4, 2.0f) + powf(t_5, 2.0f)) >= t_3) {
tmp = t_5 * (1.0f / sqrtf(fmaxf(t_6, t_3)));
} else {
tmp = t_2 * (1.0f / sqrtf(fmaxf(t_6, (t_1 + (dY_46_v * (floorf(h) * t_2))))));
}
return tmp;
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = Float32(floor(w) * dY_46_u) t_1 = Float32(t_0 * t_0) t_2 = Float32(floor(h) * dY_46_v) t_3 = Float32(t_1 + Float32(t_2 * t_2)) t_4 = Float32(dX_46_u * floor(w)) t_5 = Float32(dX_46_v * floor(h)) t_6 = Float32(Float32(t_5 * t_5) + Float32(t_4 * t_4)) tmp = Float32(0.0) if (Float32((t_4 ^ Float32(2.0)) + (t_5 ^ Float32(2.0))) >= t_3) tmp = Float32(t_5 * Float32(Float32(1.0) / sqrt(((t_6 != t_6) ? t_3 : ((t_3 != t_3) ? t_6 : max(t_6, t_3)))))); else tmp = Float32(t_2 * Float32(Float32(1.0) / sqrt(((t_6 != t_6) ? Float32(t_1 + Float32(dY_46_v * Float32(floor(h) * t_2))) : ((Float32(t_1 + Float32(dY_46_v * Float32(floor(h) * t_2))) != Float32(t_1 + Float32(dY_46_v * Float32(floor(h) * t_2)))) ? t_6 : max(t_6, Float32(t_1 + Float32(dY_46_v * Float32(floor(h) * t_2))))))))); end return tmp end
function tmp_2 = code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = floor(w) * dY_46_u; t_1 = t_0 * t_0; t_2 = floor(h) * dY_46_v; t_3 = t_1 + (t_2 * t_2); t_4 = dX_46_u * floor(w); t_5 = dX_46_v * floor(h); t_6 = (t_5 * t_5) + (t_4 * t_4); tmp = single(0.0); if (((t_4 ^ single(2.0)) + (t_5 ^ single(2.0))) >= t_3) tmp = t_5 * (single(1.0) / sqrt(max(t_6, t_3))); else tmp = t_2 * (single(1.0) / sqrt(max(t_6, (t_1 + (dY_46_v * (floor(h) * t_2)))))); end tmp_2 = tmp; end
\begin{array}{l}
\\
\begin{array}{l}
t_0 := \left\lfloorw\right\rfloor \cdot dY.u\\
t_1 := t_0 \cdot t_0\\
t_2 := \left\lfloorh\right\rfloor \cdot dY.v\\
t_3 := t_1 + t_2 \cdot t_2\\
t_4 := dX.u \cdot \left\lfloorw\right\rfloor\\
t_5 := dX.v \cdot \left\lfloorh\right\rfloor\\
t_6 := t_5 \cdot t_5 + t_4 \cdot t_4\\
\mathbf{if}\;{t_4}^{2} + {t_5}^{2} \geq t_3:\\
\;\;\;\;t_5 \cdot \frac{1}{\sqrt{\mathsf{max}\left(t_6, t_3\right)}}\\
\mathbf{else}:\\
\;\;\;\;t_2 \cdot \frac{1}{\sqrt{\mathsf{max}\left(t_6, t_1 + dY.v \cdot \left(\left\lfloorh\right\rfloor \cdot t_2\right)\right)}}\\
\end{array}
\end{array}
Initial program 76.2%
pow276.2%
pow-to-exp59.9%
Applied egg-rr59.9%
exp-to-pow76.2%
pow276.2%
associate-*r*76.1%
Applied egg-rr76.1%
pow276.1%
Applied egg-rr76.1%
pow276.1%
Applied egg-rr76.1%
Final simplification76.1%
herbie shell --seed 2024010
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:name "Anisotropic x16 LOD (line direction, v)"
: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))
(if (>= (+ (* (* (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)))) (* (/ 1.0 (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 h) dX.v)) (* (/ 1.0 (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 h) dY.v))))