51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
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#ifndef HGL_HALF_FLOAT_INCLUDE
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#define HGL_HALF_FLOAT_INCLUDE
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#include<hgl/platform/Platform.h>
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namespace hgl
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{
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using half_float=uint16;
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inline const half_float float2half(const float &f)
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{
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const uint32 x = *((uint32 *)&f);
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return ((x>>16)&0x8000)|((((x&0x7f800000)-0x38000000)>>13)&0x7c00)|((x>>13)&0x03ff);
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}
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inline const float half2float(const half_float &hf)
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{
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union
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{
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float f;
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uint32 u;
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}x;
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x.u=(((hf&0x8000)<<16) | (((hf&0x7c00)+0x1C000)<<13) | ((hf&0x03FF)<<13));
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return x.f;
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}
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inline void half_to_float(uint32 *target,const half_float *source,uint32 count)
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{
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while (count--)
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{
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*target = (((*source & 0x8000) << 16) | (((*source & 0x7c00) + 0x1C000) << 13) | ((*source & 0x03FF) << 13));
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++target;
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++source;
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}
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}
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inline void float_to_half(half_float *target,const float *source,uint32 count)
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{
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while (count--)
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{
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*target = float2half(*source);
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++target;
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++source;
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}
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}
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}//namespace hgl
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#endif//HGL_HALF_FLOAT_INCLUDE
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