# 1.27.0[−][src]Function core::arch::x86_64::_mm_sha1rnds4_epu32

    pub unsafe fn _mm_sha1rnds4_epu32(a: __m128i, b: __m128i, func: i32) -> __m128i

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

Perform four rounds of SHA1 operation using an initial SHA1 state (A,B,C,D) from `a` and some pre-computed sum of the next 4 round message values (unsigned 32-bit integers), and state variable E from `b`, and return the updated SHA1 state (A,B,C,D). `func` contains the logic functions and round constants.

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