Files
ispc/tests/half-2.ispc
Matt Pharr 467f1e71d7 Add fast versions of the float<-->half conversion routines in the stdlib.
These get slightly wrong results for zero and the denorms and also
don't handle the Inf/NaN stuff correctly, but are much more efficient
than the full versions of these routines.
2011-08-03 15:58:42 +01:00

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export uniform int width() { return programCount; }
export void f_v(uniform float RET[]) {
float sum = 0;
int errors = 0;
// We should match up except for the denorms (0->1023) and the inf/nan
// ranges.
for (uniform int i = 1024; i < 32768-1024; ++i) {
unsigned int16 h = i;
float f = half_to_float_fast(i);
h = float_to_half_fast(f);
if (i != h)
++errors;
}
for (uniform int i = 32768+1024; i < 65536-1024; ++i) {
unsigned int16 h = i;
float f = half_to_float_fast(i);
h = float_to_half_fast(f);
if (i != h)
++errors;
}
RET[programIndex] = errors;
}
export void result(uniform float RET[]) {
RET[programIndex] = 0;
}