# 1.27.0[−][src]Function core::arch::x86::_mm256_testz_si256

pub unsafe fn _mm256_testz_si256(a: __m256i, b: __m256i) -> i32

This is supported on

**x86 and target feature**only.`avx`

Compute the bitwise AND of 256 bits (representing integer data) in `a`

and
`b`

, and set `ZF`

to 1 if the result is zero, otherwise set `ZF`

to 0.
Compute the bitwise NOT of `a`

and then AND with `b`

, and set `CF`

to 1 if
the result is zero, otherwise set `CF`

to 0. Return the `ZF`

value.