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added GetBitOffset

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HuYingzhuo(hugo/hyzboy) 2023-06-12 16:25:51 +08:00
parent 51650bd4b1
commit be17b06a2f
1 changed files with 18 additions and 0 deletions
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18
inc/hgl/TypeFunc.h
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@ -143,6 +143,24 @@ namespace hgl
return count; return count;
} }
template<typename T>
inline constexpr int GetBitOffset(const T value)
{
int offset=0;
T bit=1;
for(int i=0;i<sizeof(T)*8;i++)
{
if(value&bit)
return offset;
bit<<=1;
++offset;
}
return -1;
}
constexpr uint HGL_SIZE_1KB =1024; constexpr uint HGL_SIZE_1KB =1024;
constexpr uint HGL_SIZE_1MB =HGL_SIZE_1KB*1024; constexpr uint HGL_SIZE_1MB =HGL_SIZE_1KB*1024;
constexpr uint HGL_SIZE_1GB =HGL_SIZE_1MB*1024; constexpr uint HGL_SIZE_1GB =HGL_SIZE_1MB*1024;