Function _mm_cmpistrz

pub unsafe fn _mm_cmpistrz(a: __m128i, b: __m128i, const IMM8: i32) -> i32

Available on (x86 or x86-64) and target feature sse4.2 and x86 only.

Compares packed strings with implicit lengths in a and b using the control in IMM8, and return 1 if any character in b was null. and 0 otherwise.

Intel’s documentation