
(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 = fmax(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}
t_0 := \left\lfloor h\right\rfloor \cdot dX.v\\
t_1 := \left\lfloor w\right\rfloor \cdot dY.u\\
t_2 := \left\lfloor h\right\rfloor \cdot dY.v\\
t_3 := \left\lfloor w\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\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_5}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_6}{t\_5}\\
\end{array}
\end{array}
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 = fmax(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}
t_0 := \left\lfloor h\right\rfloor \cdot dX.v\\
t_1 := \left\lfloor w\right\rfloor \cdot dY.u\\
t_2 := \left\lfloor h\right\rfloor \cdot dY.v\\
t_3 := \left\lfloor w\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\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_5}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_6}{t\_5}\\
\end{array}
\end{array}
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* (floor h) dX.v))
(t_1 (* dX.u (floor w)))
(t_2 (* (floor w) dX.u))
(t_3 (* t_2 t_2))
(t_4 (fabs (* -1.0 (* dX.v (* dY.u (* (floor h) (floor w)))))))
(t_5 (* dY.u (floor w)))
(t_6 (* (floor w) dY.u))
(t_7 (fabs (* (floor h) (- (* t_5 dX.v) (* dY.v t_1)))))
(t_8 (* (floor h) dY.v))
(t_9 (+ (* t_6 t_6) (* t_8 t_8)))
(t_10 (fmax (+ t_3 (* t_0 t_0)) t_9))
(t_11 (fabs (- (* t_2 t_8) (* t_0 t_6))))
(t_12 (sqrt t_10))
(t_13
(fmax (+ t_3 (exp (* (+ (log (- (floor h))) (log dX.v)) 2.0))) t_9))
(t_14 (sqrt t_13))
(t_15
(fmax
(fma
(* t_5 dY.u)
(floor w)
(* (* (* dY.v (floor h)) dY.v) (floor h)))
(fma
(* (* dX.v (floor h)) dX.v)
(floor h)
(* (* t_1 dX.u) (floor w)))))
(t_16 (sqrt t_15)))
(if (<=
(log2
(if (> (/ t_10 t_11) (floor maxAniso))
(/ t_12 (floor maxAniso))
(/ t_11 t_12)))
100.0)
(log2
(if (> (/ t_15 t_7) (floor maxAniso))
(/ t_16 (floor maxAniso))
(/ t_7 t_16)))
(log2
(if (> (/ t_13 t_4) (floor maxAniso))
(/ t_14 (floor maxAniso))
(/ t_4 t_14))))))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 = dX_46_u * floorf(w);
float t_2 = floorf(w) * dX_46_u;
float t_3 = t_2 * t_2;
float t_4 = fabsf((-1.0f * (dX_46_v * (dY_46_u * (floorf(h) * floorf(w))))));
float t_5 = dY_46_u * floorf(w);
float t_6 = floorf(w) * dY_46_u;
float t_7 = fabsf((floorf(h) * ((t_5 * dX_46_v) - (dY_46_v * t_1))));
float t_8 = floorf(h) * dY_46_v;
float t_9 = (t_6 * t_6) + (t_8 * t_8);
float t_10 = fmaxf((t_3 + (t_0 * t_0)), t_9);
float t_11 = fabsf(((t_2 * t_8) - (t_0 * t_6)));
float t_12 = sqrtf(t_10);
float t_13 = fmaxf((t_3 + expf(((logf(-floorf(h)) + logf(dX_46_v)) * 2.0f))), t_9);
float t_14 = sqrtf(t_13);
float t_15 = fmaxf(fmaf((t_5 * dY_46_u), floorf(w), (((dY_46_v * floorf(h)) * dY_46_v) * floorf(h))), fmaf(((dX_46_v * floorf(h)) * dX_46_v), floorf(h), ((t_1 * dX_46_u) * floorf(w))));
float t_16 = sqrtf(t_15);
float tmp;
if ((t_10 / t_11) > floorf(maxAniso)) {
tmp = t_12 / floorf(maxAniso);
} else {
tmp = t_11 / t_12;
}
float tmp_2;
if (log2f(tmp) <= 100.0f) {
float tmp_3;
if ((t_15 / t_7) > floorf(maxAniso)) {
tmp_3 = t_16 / floorf(maxAniso);
} else {
tmp_3 = t_7 / t_16;
}
tmp_2 = log2f(tmp_3);
} else {
float tmp_4;
if ((t_13 / t_4) > floorf(maxAniso)) {
tmp_4 = t_14 / floorf(maxAniso);
} else {
tmp_4 = t_4 / t_14;
}
tmp_2 = log2f(tmp_4);
}
return tmp_2;
}
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(dX_46_u * floor(w)) t_2 = Float32(floor(w) * dX_46_u) t_3 = Float32(t_2 * t_2) t_4 = abs(Float32(Float32(-1.0) * Float32(dX_46_v * Float32(dY_46_u * Float32(floor(h) * floor(w)))))) t_5 = Float32(dY_46_u * floor(w)) t_6 = Float32(floor(w) * dY_46_u) t_7 = abs(Float32(floor(h) * Float32(Float32(t_5 * dX_46_v) - Float32(dY_46_v * t_1)))) t_8 = Float32(floor(h) * dY_46_v) t_9 = Float32(Float32(t_6 * t_6) + Float32(t_8 * t_8)) t_10 = fmax(Float32(t_3 + Float32(t_0 * t_0)), t_9) t_11 = abs(Float32(Float32(t_2 * t_8) - Float32(t_0 * t_6))) t_12 = sqrt(t_10) t_13 = fmax(Float32(t_3 + exp(Float32(Float32(log(Float32(-floor(h))) + log(dX_46_v)) * Float32(2.0)))), t_9) t_14 = sqrt(t_13) t_15 = fmax(fma(Float32(t_5 * dY_46_u), floor(w), Float32(Float32(Float32(dY_46_v * floor(h)) * dY_46_v) * floor(h))), fma(Float32(Float32(dX_46_v * floor(h)) * dX_46_v), floor(h), Float32(Float32(t_1 * dX_46_u) * floor(w)))) t_16 = sqrt(t_15) tmp = Float32(0.0) if (Float32(t_10 / t_11) > floor(maxAniso)) tmp = Float32(t_12 / floor(maxAniso)); else tmp = Float32(t_11 / t_12); end tmp_2 = Float32(0.0) if (log2(tmp) <= Float32(100.0)) tmp_3 = Float32(0.0) if (Float32(t_15 / t_7) > floor(maxAniso)) tmp_3 = Float32(t_16 / floor(maxAniso)); else tmp_3 = Float32(t_7 / t_16); end tmp_2 = log2(tmp_3); else tmp_4 = Float32(0.0) if (Float32(t_13 / t_4) > floor(maxAniso)) tmp_4 = Float32(t_14 / floor(maxAniso)); else tmp_4 = Float32(t_4 / t_14); end tmp_2 = log2(tmp_4); end return tmp_2 end
\begin{array}{l}
t_0 := \left\lfloor h\right\rfloor \cdot dX.v\\
t_1 := dX.u \cdot \left\lfloor w\right\rfloor \\
t_2 := \left\lfloor w\right\rfloor \cdot dX.u\\
t_3 := t\_2 \cdot t\_2\\
t_4 := \left|-1 \cdot \left(dX.v \cdot \left(dY.u \cdot \left(\left\lfloor h\right\rfloor \cdot \left\lfloor w\right\rfloor \right)\right)\right)\right|\\
t_5 := dY.u \cdot \left\lfloor w\right\rfloor \\
t_6 := \left\lfloor w\right\rfloor \cdot dY.u\\
t_7 := \left|\left\lfloor h\right\rfloor \cdot \left(t\_5 \cdot dX.v - dY.v \cdot t\_1\right)\right|\\
t_8 := \left\lfloor h\right\rfloor \cdot dY.v\\
t_9 := t\_6 \cdot t\_6 + t\_8 \cdot t\_8\\
t_10 := \mathsf{max}\left(t\_3 + t\_0 \cdot t\_0, t\_9\right)\\
t_11 := \left|t\_2 \cdot t\_8 - t\_0 \cdot t\_6\right|\\
t_12 := \sqrt{t\_10}\\
t_13 := \mathsf{max}\left(t\_3 + e^{\left(\log \left(-\left\lfloor h\right\rfloor \right) + \log dX.v\right) \cdot 2}, t\_9\right)\\
t_14 := \sqrt{t\_13}\\
t_15 := \mathsf{max}\left(\mathsf{fma}\left(t\_5 \cdot dY.u, \left\lfloor w\right\rfloor , \left(\left(dY.v \cdot \left\lfloor h\right\rfloor \right) \cdot dY.v\right) \cdot \left\lfloor h\right\rfloor \right), \mathsf{fma}\left(\left(dX.v \cdot \left\lfloor h\right\rfloor \right) \cdot dX.v, \left\lfloor h\right\rfloor , \left(t\_1 \cdot dX.u\right) \cdot \left\lfloor w\right\rfloor \right)\right)\\
t_16 := \sqrt{t\_15}\\
\mathbf{if}\;\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_10}{t\_11} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_12}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_11}{t\_12}\\
\end{array} \leq 100:\\
\;\;\;\;\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_15}{t\_7} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_16}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_7}{t\_16}\\
\end{array}\\
\mathbf{else}:\\
\;\;\;\;\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_13}{t\_4} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_14}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_4}{t\_14}\\
\end{array}\\
\end{array}
if (log2.f32 (if (>.f32 (/.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v)))) (fabs.f32 (-.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 h) dY.v)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 w) dY.u))))) (floor.f32 maxAniso)) (/.f32 (sqrt.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v))))) (floor.f32 maxAniso)) (/.f32 (fabs.f32 (-.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 h) dY.v)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 w) dY.u)))) (sqrt.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v)))))))) < 100Initial program 76.0%
Applied rewrites75.9%
if 100 < (log2.f32 (if (>.f32 (/.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v)))) (fabs.f32 (-.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 h) dY.v)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 w) dY.u))))) (floor.f32 maxAniso)) (/.f32 (sqrt.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v))))) (floor.f32 maxAniso)) (/.f32 (fabs.f32 (-.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 h) dY.v)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 w) dY.u)))) (sqrt.f32 (fmax.f32 (+.f32 (*.f32 (*.f32 (floor.f32 w) dX.u) (*.f32 (floor.f32 w) dX.u)) (*.f32 (*.f32 (floor.f32 h) dX.v) (*.f32 (floor.f32 h) dX.v))) (+.f32 (*.f32 (*.f32 (floor.f32 w) dY.u) (*.f32 (floor.f32 w) dY.u)) (*.f32 (*.f32 (floor.f32 h) dY.v) (*.f32 (floor.f32 h) dY.v)))))))) Initial program 76.0%
Taylor expanded in dX.u around 0
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
Taylor expanded in dX.u around 0
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
lift-*.f32N/A
pow2N/A
pow-to-expN/A
lower-unsound-exp.f32N/A
lower-unsound-*.f32N/A
lower-unsound-log.f3266.8%
lift-*.f32N/A
*-commutativeN/A
lift-*.f3266.8%
Applied rewrites66.8%
lift-*.f32N/A
pow2N/A
pow-to-expN/A
lower-unsound-exp.f32N/A
lower-unsound-*.f32N/A
lower-unsound-log.f3260.9%
lift-*.f32N/A
*-commutativeN/A
lift-*.f3260.9%
Applied rewrites60.9%
lift-*.f32N/A
pow2N/A
pow-to-expN/A
lower-unsound-exp.f32N/A
lower-unsound-*.f32N/A
lower-unsound-log.f3263.1%
lift-*.f32N/A
*-commutativeN/A
lift-*.f3263.1%
Applied rewrites63.1%
rem-log-expN/A
exp-fabsN/A
lift-log.f32N/A
lift-*.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
neg-fabsN/A
lift-*.f32N/A
distribute-rgt-neg-outN/A
lift-neg.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
lift-log.f32N/A
exp-fabsN/A
lift-log.f32N/A
rem-exp-logN/A
lift-*.f32N/A
Applied rewrites55.1%
rem-log-expN/A
exp-fabsN/A
lift-log.f32N/A
lift-*.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
neg-fabsN/A
lift-*.f32N/A
distribute-rgt-neg-outN/A
lift-neg.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
lift-log.f32N/A
exp-fabsN/A
lift-log.f32N/A
rem-exp-logN/A
lift-*.f32N/A
Applied rewrites49.2%
rem-log-expN/A
exp-fabsN/A
lift-log.f32N/A
lift-*.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
neg-fabsN/A
lift-*.f32N/A
distribute-rgt-neg-outN/A
lift-neg.f32N/A
*-commutativeN/A
lift-*.f32N/A
rem-exp-logN/A
lift-log.f32N/A
exp-fabsN/A
lift-log.f32N/A
rem-exp-logN/A
lift-*.f32N/A
Applied rewrites51.5%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (* dY.u (floor w)))
(t_1 (* dX.u (floor w)))
(t_2 (fabs (* (floor h) (- (* t_0 dX.v) (* dY.v t_1)))))
(t_3
(fmax
(fma
(* t_0 dY.u)
(floor w)
(* (* (* dY.v (floor h)) dY.v) (floor h)))
(fma
(* (* dX.v (floor h)) dX.v)
(floor h)
(* (* t_1 dX.u) (floor w)))))
(t_4 (sqrt t_3)))
(log2
(if (> (/ t_3 t_2) (floor maxAniso))
(/ t_4 (floor maxAniso))
(/ t_2 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 = dY_46_u * floorf(w);
float t_1 = dX_46_u * floorf(w);
float t_2 = fabsf((floorf(h) * ((t_0 * dX_46_v) - (dY_46_v * t_1))));
float t_3 = fmaxf(fmaf((t_0 * dY_46_u), floorf(w), (((dY_46_v * floorf(h)) * dY_46_v) * floorf(h))), fmaf(((dX_46_v * floorf(h)) * dX_46_v), floorf(h), ((t_1 * dX_46_u) * floorf(w))));
float t_4 = sqrtf(t_3);
float tmp;
if ((t_3 / t_2) > floorf(maxAniso)) {
tmp = t_4 / floorf(maxAniso);
} else {
tmp = t_2 / 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(dY_46_u * floor(w)) t_1 = Float32(dX_46_u * floor(w)) t_2 = abs(Float32(floor(h) * Float32(Float32(t_0 * dX_46_v) - Float32(dY_46_v * t_1)))) t_3 = fmax(fma(Float32(t_0 * dY_46_u), floor(w), Float32(Float32(Float32(dY_46_v * floor(h)) * dY_46_v) * floor(h))), fma(Float32(Float32(dX_46_v * floor(h)) * dX_46_v), floor(h), Float32(Float32(t_1 * dX_46_u) * floor(w)))) t_4 = sqrt(t_3) tmp = Float32(0.0) if (Float32(t_3 / t_2) > floor(maxAniso)) tmp = Float32(t_4 / floor(maxAniso)); else tmp = Float32(t_2 / t_4); end return log2(tmp) end
\begin{array}{l}
t_0 := dY.u \cdot \left\lfloor w\right\rfloor \\
t_1 := dX.u \cdot \left\lfloor w\right\rfloor \\
t_2 := \left|\left\lfloor h\right\rfloor \cdot \left(t\_0 \cdot dX.v - dY.v \cdot t\_1\right)\right|\\
t_3 := \mathsf{max}\left(\mathsf{fma}\left(t\_0 \cdot dY.u, \left\lfloor w\right\rfloor , \left(\left(dY.v \cdot \left\lfloor h\right\rfloor \right) \cdot dY.v\right) \cdot \left\lfloor h\right\rfloor \right), \mathsf{fma}\left(\left(dX.v \cdot \left\lfloor h\right\rfloor \right) \cdot dX.v, \left\lfloor h\right\rfloor , \left(t\_1 \cdot dX.u\right) \cdot \left\lfloor w\right\rfloor \right)\right)\\
t_4 := \sqrt{t\_3}\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_3}{t\_2} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_4}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_2}{t\_4}\\
\end{array}
\end{array}
Initial program 76.0%
Applied rewrites75.9%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (fabs (* (floor h) (* -1.0 (* dX.u (* dY.v (floor w)))))))
(t_1
(fmax
(fma
(* (* dY.u (floor w)) dY.u)
(floor w)
(* (* (* dY.v (floor h)) dY.v) (floor h)))
(fma
(* (* dX.v (floor h)) dX.v)
(floor h)
(* (* (* dX.u (floor w)) dX.u) (floor w)))))
(t_2 (sqrt t_1)))
(log2
(if (> (/ t_1 t_0) (floor maxAniso))
(/ t_2 (floor maxAniso))
(/ t_0 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 = fabsf((floorf(h) * (-1.0f * (dX_46_u * (dY_46_v * floorf(w))))));
float t_1 = fmaxf(fmaf(((dY_46_u * floorf(w)) * dY_46_u), floorf(w), (((dY_46_v * floorf(h)) * dY_46_v) * floorf(h))), fmaf(((dX_46_v * floorf(h)) * dX_46_v), floorf(h), (((dX_46_u * floorf(w)) * dX_46_u) * floorf(w))));
float t_2 = sqrtf(t_1);
float tmp;
if ((t_1 / t_0) > floorf(maxAniso)) {
tmp = t_2 / floorf(maxAniso);
} else {
tmp = t_0 / t_2;
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = abs(Float32(floor(h) * Float32(Float32(-1.0) * Float32(dX_46_u * Float32(dY_46_v * floor(w)))))) t_1 = fmax(fma(Float32(Float32(dY_46_u * floor(w)) * dY_46_u), floor(w), Float32(Float32(Float32(dY_46_v * floor(h)) * dY_46_v) * floor(h))), fma(Float32(Float32(dX_46_v * floor(h)) * dX_46_v), floor(h), Float32(Float32(Float32(dX_46_u * floor(w)) * dX_46_u) * floor(w)))) t_2 = sqrt(t_1) tmp = Float32(0.0) if (Float32(t_1 / t_0) > floor(maxAniso)) tmp = Float32(t_2 / floor(maxAniso)); else tmp = Float32(t_0 / t_2); end return log2(tmp) end
\begin{array}{l}
t_0 := \left|\left\lfloor h\right\rfloor \cdot \left(-1 \cdot \left(dX.u \cdot \left(dY.v \cdot \left\lfloor w\right\rfloor \right)\right)\right)\right|\\
t_1 := \mathsf{max}\left(\mathsf{fma}\left(\left(dY.u \cdot \left\lfloor w\right\rfloor \right) \cdot dY.u, \left\lfloor w\right\rfloor , \left(\left(dY.v \cdot \left\lfloor h\right\rfloor \right) \cdot dY.v\right) \cdot \left\lfloor h\right\rfloor \right), \mathsf{fma}\left(\left(dX.v \cdot \left\lfloor h\right\rfloor \right) \cdot dX.v, \left\lfloor h\right\rfloor , \left(\left(dX.u \cdot \left\lfloor w\right\rfloor \right) \cdot dX.u\right) \cdot \left\lfloor w\right\rfloor \right)\right)\\
t_2 := \sqrt{t\_1}\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_1}{t\_0} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_2}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_0}{t\_2}\\
\end{array}
\end{array}
Initial program 76.0%
Applied rewrites75.9%
Taylor expanded in dX.u around inf
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
Taylor expanded in dX.u around inf
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
(FPCore (w h dX.u dX.v dY.u dY.v maxAniso)
:precision binary32
(let* ((t_0 (fabs (* (* dX.v (* dY.u (floor h))) (floor w))))
(t_1
(fmax
(fma
(* (* dX.u (floor w)) dX.u)
(floor w)
(* (* (* dX.v (floor h)) dX.v) (floor h)))
(fma
(* (* dY.v (floor h)) dY.v)
(floor h)
(* (* (* dY.u (floor w)) dY.u) (floor w)))))
(t_2 (sqrt t_1)))
(log2
(if (> (/ t_1 t_0) (floor maxAniso))
(/ t_2 (floor maxAniso))
(/ t_0 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 = fabsf(((dX_46_v * (dY_46_u * floorf(h))) * floorf(w)));
float t_1 = fmaxf(fmaf(((dX_46_u * floorf(w)) * dX_46_u), floorf(w), (((dX_46_v * floorf(h)) * dX_46_v) * floorf(h))), fmaf(((dY_46_v * floorf(h)) * dY_46_v), floorf(h), (((dY_46_u * floorf(w)) * dY_46_u) * floorf(w))));
float t_2 = sqrtf(t_1);
float tmp;
if ((t_1 / t_0) > floorf(maxAniso)) {
tmp = t_2 / floorf(maxAniso);
} else {
tmp = t_0 / t_2;
}
return log2f(tmp);
}
function code(w, h, dX_46_u, dX_46_v, dY_46_u, dY_46_v, maxAniso) t_0 = abs(Float32(Float32(dX_46_v * Float32(dY_46_u * floor(h))) * floor(w))) t_1 = fmax(fma(Float32(Float32(dX_46_u * floor(w)) * dX_46_u), floor(w), Float32(Float32(Float32(dX_46_v * floor(h)) * dX_46_v) * floor(h))), fma(Float32(Float32(dY_46_v * floor(h)) * dY_46_v), floor(h), Float32(Float32(Float32(dY_46_u * floor(w)) * dY_46_u) * floor(w)))) t_2 = sqrt(t_1) tmp = Float32(0.0) if (Float32(t_1 / t_0) > floor(maxAniso)) tmp = Float32(t_2 / floor(maxAniso)); else tmp = Float32(t_0 / t_2); end return log2(tmp) end
\begin{array}{l}
t_0 := \left|\left(dX.v \cdot \left(dY.u \cdot \left\lfloor h\right\rfloor \right)\right) \cdot \left\lfloor w\right\rfloor \right|\\
t_1 := \mathsf{max}\left(\mathsf{fma}\left(\left(dX.u \cdot \left\lfloor w\right\rfloor \right) \cdot dX.u, \left\lfloor w\right\rfloor , \left(\left(dX.v \cdot \left\lfloor h\right\rfloor \right) \cdot dX.v\right) \cdot \left\lfloor h\right\rfloor \right), \mathsf{fma}\left(\left(dY.v \cdot \left\lfloor h\right\rfloor \right) \cdot dY.v, \left\lfloor h\right\rfloor , \left(\left(dY.u \cdot \left\lfloor w\right\rfloor \right) \cdot dY.u\right) \cdot \left\lfloor w\right\rfloor \right)\right)\\
t_2 := \sqrt{t\_1}\\
\log_{2} \begin{array}{l}
\mathbf{if}\;\frac{t\_1}{t\_0} > \left\lfloor maxAniso\right\rfloor :\\
\;\;\;\;\frac{t\_2}{\left\lfloor maxAniso\right\rfloor }\\
\mathbf{else}:\\
\;\;\;\;\frac{t\_0}{t\_2}\\
\end{array}
\end{array}
Initial program 76.0%
Taylor expanded in dX.u around 0
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
Taylor expanded in dX.u around 0
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-*.f32N/A
lower-floor.f32N/A
lower-floor.f3274.9%
Applied rewrites74.9%
Applied rewrites74.9%
Applied rewrites74.9%
herbie shell --seed 2025193
(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)))))))))