_mm_movemask_pi8
Microsoft Specific
Creates an 8-bit mask from the most significant bits of the bytes in a.
int _mm_movemask_pi8(__m64 a );
PMOVMSKB
Return Value
r := sign(a7)<<7 | sign(a6)<<6 | ... | sign(a0)
Requirements
Header: mmintrin.h
END Microsoft Specific