Skip to main content

## _ktest_mask64_u8

# Function _ktest_mask64_u8

1.89.0 (const: unstable) · Source

    pub unsafe fn _ktest_mask64_u8(
        a: __mmask64,
        b: __mmask64,
        and_not: *mut u8,
    ) -> u8

Available on x86-64 and target feature `avx512bw` and (x86 or x86-64) only.
Expand description

Compute the bitwise AND of 64-bit masks a and b, and if the result is all zeros, store 1 in dst, otherwise store 0 in dst. Compute the bitwise NOT of a and then AND with b, if the result is all zeros, store 1 in and_not, otherwise store 0 in and_not.

Intel’s Documentation