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Fixed use of intrinsics in pure mode #92

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This commit is contained in:
Christophe Riccio 2013-06-13 16:37:00 +00:00
parent bbf9989334
commit fa2cca847f
1 changed files with 9 additions and 7 deletions
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16
glm/core/func_integer.inl
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@ -26,10 +26,12 @@
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////
#if(GLM_ARCH != GLM_ARCH_PURE)
#if(GLM_COMPILER & GLM_COMPILER_VC)
#include <intrin.h>
#pragma intrinsic(_BitScanReverse)
#endif
# include <intrin.h>
# pragma intrinsic(_BitScanReverse)
#endif//(GLM_COMPILER & GLM_COMPILER_VC)
#endif//(GLM_ARCH != GLM_ARCH_PURE)
namespace glm
{
@ -521,7 +523,6 @@ namespace glm
}
// findMSB
/*
#if((GLM_ARCH != GLM_ARCH_PURE) && (GLM_COMPILER & GLM_COMPILER_VC))
template <typename genIUType>
@ -538,7 +539,7 @@ namespace glm
_BitScanReverse(&Result, Value);
return int(Result);
}
/*
// __builtin_clz seems to be buggy as it crasks for some values, from 0x00200000 to 80000000
#elif((GLM_ARCH != GLM_ARCH_PURE) && (GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER >= GLM_COMPILER_GCC40))
@ -560,8 +561,9 @@ namespace glm
//
return 31 - __builtin_clzl(Value);
}
#else
*/
#else
/* SSE implementation idea
__m128i const Zero = _mm_set_epi32( 0, 0, 0, 0);
@ -606,7 +608,7 @@ namespace glm
return MostSignificantBit;
}
}
//#endif//(GLM_COMPILER)
#endif//(GLM_COMPILER)
template <typename T>
GLM_FUNC_QUALIFIER detail::tvec2<int> findMSB