Visible to Intel only — GUID: GUID-32EEFB05-A9D8-4F53-9B4A-87119DF2644E
Visible to Intel only — GUID: GUID-32EEFB05-A9D8-4F53-9B4A-87119DF2644E
_mm256_testz_si256
Performs a packed bit test of two integer vectors to set the ZF flag. The corresponding Intel® AVX instruction is VPTEST.
Syntax
extern int _mm256_testz_si256(__m256i s1, __m256i s2); |
Arguments
s1 |
first source integer vector |
s2 |
second source integer vector |
Description
Allows setting of the ZF flag. The ZF flag is set based on the result of a bitwise AND operation between the first and second source vectors. The corresponding instruction VPTEST sets the ZF flag if all the resulting bits are 0. If the resulting bits are non-zeros, the instruction clears the ZF flag.
Returns
Non-zero if ZF flag is set
Zero if the ZF flag is not set