From: Mark Reid <mindm...@gmail.com>
if the float pixel * 65535.0f > 2147483647.0f
lrintf may overfow and return negative values, depending on implementation.
nan and +/-inf values may also be implementation defined
clip the value first so lrintf always works.
values < 0.0f, -inf, nan = 0.0f
values > 65535.0f, +inf = 65535.0f
old timings
195960 decicycles in planar_rgbf32le_to_uv, 1 runs, 0 skips
186120 decicycles in planar_rgbf32le_to_uv, 2 runs, 0 skips
188645 decicycles in planar_rgbf32le_to_uv, 4 runs, 0 skips
183625 decicycles in planar_rgbf32le_to_uv, 8 runs, 0 skips
181157 decicycles in planar_rgbf32le_to_uv, 16 runs, 0 skips
177533 decicycles in planar_rgbf32le_to_uv, 32 runs, 0 skips
175689 decicycles in planar_rgbf32le_to_uv, 64 runs, 0 skips
232960 decicycles in planar_rgbf32be_to_uv, 1 runs, 0 skips
221380 decicycles in planar_rgbf32be_to_uv, 2 runs, 0 skips
216640 decicycles in planar_rgbf32be_to_uv, 4 runs, 0 skips
213505 decicycles in planar_rgbf32be_to_uv, 8 runs, 0 skips
211558 decicycles in planar_rgbf32be_to_uv, 16 runs, 0 skips
210596 decicycles in planar_rgbf32be_to_uv, 32 runs, 0 skips
210202 decicycles in planar_rgbf32be_to_uv, 64 runs, 0 skips
161680 decicycles in planar_rgbf32le_to_y, 1 runs, 0 skips
153540 decicycles in planar_rgbf32le_to_y, 2 runs, 0 skips
148255 decicycles in planar_rgbf32le_to_y, 4 runs, 0 skips
140600 decicycles in planar_rgbf32le_to_y, 8 runs, 0 skips
132935 decicycles in planar_rgbf32le_to_y, 16 runs, 0 skips
128531 decicycles in planar_rgbf32le_to_y, 32 runs, 0 skips
140933 decicycles in planar_rgbf32le_to_y, 64 runs, 0 skips
190980 decicycles in planar_rgbf32be_to_y, 1 runs, 0 skips
176080 decicycles in planar_rgbf32be_to_y, 2 runs, 0 skips
167980 decicycles in planar_rgbf32be_to_y, 4 runs, 0 skips
164685 decicycles in planar_rgbf32be_to_y, 8 runs, 0 skips
162751 decicycles in planar_rgbf32be_to_y, 16 runs, 0 skips
162404 decicycles in planar_rgbf32be_to_y, 32 runs, 0 skips
167849 decicycles in planar_rgbf32be_to_y, 64 runs, 0 skips
new timings
183320 decicycles in planar_rgbf32le_to_uv, 1 runs, 0 skips
175700 decicycles in planar_rgbf32le_to_uv, 2 runs, 0 skips
179570 decicycles in planar_rgbf32le_to_uv, 4 runs, 0 skips
172932 decicycles in planar_rgbf32le_to_uv, 8 runs, 0 skips
168707 decicycles in planar_rgbf32le_to_uv, 16 runs, 0 skips
165224 decicycles in planar_rgbf32le_to_uv, 32 runs, 0 skips
163423 decicycles in planar_rgbf32le_to_uv, 64 runs, 0 skips
184940 decicycles in planar_rgbf32be_to_uv, 1 runs, 0 skips
185150 decicycles in planar_rgbf32be_to_uv, 2 runs, 0 skips
185790 decicycles in planar_rgbf32be_to_uv, 4 runs, 0 skips
185472 decicycles in planar_rgbf32be_to_uv, 8 runs, 0 skips
185277 decicycles in planar_rgbf32be_to_uv, 16 runs, 0 skips
185813 decicycles in planar_rgbf32be_to_uv, 32 runs, 0 skips
185332 decicycles in planar_rgbf32be_to_uv, 64 runs, 0 skips
145400 decicycles in planar_rgbf32le_to_y, 1 runs, 0 skips
145100 decicycles in planar_rgbf32le_to_y, 2 runs, 0 skips
143490 decicycles in planar_rgbf32le_to_y, 4 runs, 0 skips
136687 decicycles in planar_rgbf32le_to_y, 8 runs, 0 skips
131271 decicycles in planar_rgbf32le_to_y, 16 runs, 0 skips
128698 decicycles in planar_rgbf32le_to_y, 32 runs, 0 skips
127170 decicycles in planar_rgbf32le_to_y, 64 runs, 0 skips
156020 decicycles in planar_rgbf32be_to_y, 1 runs, 0 skips
146990 decicycles in planar_rgbf32be_to_y, 2 runs, 0 skips
142020 decicycles in planar_rgbf32be_to_y, 4 runs, 0 skips
141052 decicycles in planar_rgbf32be_to_y, 8 runs, 0 skips
138973 decicycles in planar_rgbf32be_to_y, 16 runs, 0 skips
138027 decicycles in planar_rgbf32be_to_y, 32 runs, 0 skips
143939 decicycles in planar_rgbf32be_to_y, 64 runs, 0 skips
