Function core_arch::x86::_mm_mulhrs_epi16

pub unsafe fn _mm_mulhrs_epi16(a: __m128i, b: __m128i) -> __m128i

This is supported on x86 and target feature ssse3 only.

Multiplies packed 16-bit signed integer values, truncate the 32-bit product to the 18 most significant bits by right-shifting, round the truncated value by adding 1, and write bits [16:1] to the destination.

Intel's documentation