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util: Use LONG_MAX instead of LONG_BIT.

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More portable.  Based on Roland Scheidegger's idea.

Tested with roundevent_test on Linux, MinGW, and MSVC.

https://bugs.freedesktop.org/show_bug.cgi?id=91591

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Jose Fonseca
2015-08-09 22:36:37 +01:00
parent 497a22a727
commit 1eaa29cb30
1 changed files with 7 additions and 6 deletions
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13
src/util/rounding.h
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@@ -28,6 +28,7 @@
#include <math.h>
#include <limits.h>
#include <stdint.h>
#ifdef __x86_64__
#include <xmmintrin.h>
@@ -96,12 +97,12 @@ static inline long
_mesa_lroundevenf(float x)
{
#ifdef __x86_64__
#if LONG_BIT == 64
#if LONG_MAX == INT64_MAX
return _mm_cvtss_si64(_mm_load_ss(&x));
#elif LONG_BIT == 32 || defined(_WIN32)
#elif LONG_MAX == INT32_MAX
return _mm_cvtss_si32(_mm_load_ss(&x));
#else
#error "Unsupported or undefined LONG_BIT"
#error "Unsupported long size"
#endif
#else
return lrintf(x);
@@ -116,12 +117,12 @@ static inline long
_mesa_lroundeven(double x)
{
#ifdef __x86_64__
#if LONG_BIT == 64
#if LONG_MAX == INT64_MAX
return _mm_cvtsd_si64(_mm_load_sd(&x));
#elif LONG_BIT == 32 || defined(_WIN32)
#elif LONG_MAX == INT32_MAX
return _mm_cvtsd_si32(_mm_load_sd(&x));
#else
#error "Unsupported or undefined LONG_BIT"
#error "Unsupported long size"
#endif
#else
return lrint(x);