# 1.27.0[−][src]Function core::arch::x86_64::_mm_cmpestra

    pub unsafe fn _mm_cmpestra(
        a: __m128i,
        la: i32,
        b: __m128i,
        lb: i32,
        imm8: i32
    ) -> i32

This is supported on x86-64 and target feature `sse4.2` only.

Compares packed strings in `a` and `b` with lengths `la` and `lb` using the control in `imm8`, and return `1` if `b` did not contain a null character and the resulting mask was zero, and `0` otherwise.

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