_mm256_testc_ps
Classification
Header File
Instruction
VTESTPS ymm, ymm
Synopsis
_mm256_testc_ps(__m256 a, __m256 b);
Description
Compute the bitwise AND of 256 bits (representing single-precision (32-bit) floating-point elements) in "a" and "b", producing an intermediate 256-bit value, and set "ZF" to 1 if the sign bit of each 32-bit element in the intermediate value is zero, otherwise set "ZF" to 0. Compute the bitwise NOT of "a" and then AND with "b", producing an intermediate value, and set "CF" to 1 if the sign bit of each 32-bit element in the intermediate value is zero, otherwise set "CF" to 0. Return the "CF" value.
Operation
tmp[255:0] := a[255:0] AND b[255:0]
IF (tmp[31] == 0 && tmp[63] == 0 && tmp[95] == 0 && tmp[127] == 0 && \
tmp[159] == 0 && tmp[191] == 0 && tmp[223] == 0 && tmp[255] == 0)
ZF := 1
ELSE
ZF := 0
FI
tmp[255:0] := (NOT a[255:0]) AND b[255:0]
IF (tmp[31] == 0 && tmp[63] == 0 && tmp[95] == 0 && tmp[127] == 0 && \
tmp[159] == 0 && tmp[191] == 0 && tmp[223] == 0 && tmp[255] == 0)
CF := 1
ELSE
CF := 0
FI
dst := CF