Function core_arch::x86::_mm256_mulhrs_epi16

pub unsafe fn _mm256_mulhrs_epi16(a: __m256i, b: __m256i) -> __m256i

This is supported on x86 and target feature avx2 only.

Multiplies packed 16-bit integers in a and b, producing intermediate signed 32-bit integers. Truncate each intermediate integer to the 18 most significant bits, round by adding 1, and return bits [16:1].

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