I want to get the low 32 bit of a int64 as int32

Question

I have an Int64 value, but I only need the lower 32 bits. Thus I want a quick way to get the Int32 value from the lower 32 bits of the Int64 value.

Thanks

Answer 1

You could let the compiler handle the endian-ness, and hide all the bit shifting, pointer manipulation etc.

DWORD CUtility::ConvertUint64toUint32(unsigned __int64 in64){
    ULARGE_INTEGER uli;
    uli.QuadPart = in64;
    return uli.LowPart;
}