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Added HalfIsInf [skip ci]

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This commit is contained in:
Andrew Kane
2023-12-04 13:33:39 -08:00
parent 7620089901
commit 7aea658b26
1 changed files with 17 additions and 4 deletions
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21
src/half.c
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@@ -281,6 +281,19 @@ Float4ToHalfUnchecked(float num)
#endif #endif
} }
/*
* Check if half is infinite
*/
static inline bool
HalfIsInf(half num)
{
#ifdef FLT16_SUPPORT
return isinf(num);
#else
return (num << 1) == 0xF800;
#endif
}
/* /*
* Convert a float4 to a half * Convert a float4 to a half
*/ */
@@ -289,9 +302,9 @@ Float4ToHalf(float num)
{ {
half result = Float4ToHalfUnchecked(num); half result = Float4ToHalfUnchecked(num);
/* TODO Perform checks without HalfToFloat4 */ if (unlikely(HalfIsInf(result)) && !isinf(num))
if (unlikely(isinf(HalfToFloat4(result))) && !isinf(num))
float_overflow_error(); float_overflow_error();
/* TODO Perform check without HalfToFloat4 */
if (unlikely(HalfToFloat4(result) == 0.0f) && num != 0.0) if (unlikely(HalfToFloat4(result) == 0.0f) && num != 0.0)
float_underflow_error(); float_underflow_error();
@@ -307,9 +320,9 @@ Float8ToHalf(double num)
/* TODO Convert directly for greater accuracy */ /* TODO Convert directly for greater accuracy */
half result = Float4ToHalfUnchecked((float) num); half result = Float4ToHalfUnchecked((float) num);
/* TODO Perform checks without HalfToFloat4 */ if (unlikely(HalfIsInf(result)) && !isinf(num))
if (unlikely(isinf(HalfToFloat4(result))) && !isinf(num))
float_overflow_error(); float_overflow_error();
/* TODO Perform check without HalfToFloat4 */
if (unlikely(HalfToFloat4(result) == 0.0f) && num != 0.0) if (unlikely(HalfToFloat4(result) == 0.0f) && num != 0.0)
float_underflow_error(); float_underflow_error();