_m_psubsb
Classification
MMX, Arithmetic, CPUID Test: MMX
Header File
Instruction
PSUBSB mm, mm
Synopsis
_m_psubsb(__m64 a, __m64 b);
Description
Subtract packed signed 8-bit integers in "b" from packed 8-bit integers in "a" using saturation, and store the results in "dst".
Operation
FOR j := 0 to 7
i := j*8
dst[i+7:i] := Saturate8(a[i+7:i] - b[i+7:i])
ENDFOR