# Function core::arch::x86::_mm_clmulepi64_si128
1.27.0[−][src]

    pub unsafe fn _mm_clmulepi64_si128<const IMM8: i32>(
        a: __m128i,
        b: __m128i
    ) -> __m128i

This is supported on x86 and target feature `pclmulqdq` only.
Expand description

Performs a carry-less multiplication of two 64-bit polynomials over the finite field GF(2^k).

The immediate byte is used for determining which halves of `a` and `b` should be used. Immediate bits other than 0 and 4 are ignored.

Intel’s documentation