Function core::arch::x86::_mm_hsub_epi16

pub unsafe fn _mm_hsub_epi16(a: __m128i, b: __m128i) -> __m128i

This is supported on x86 and target feature ssse3 only.

Horizontally subtract the adjacent pairs of values contained in 2 packed 128-bit vectors of [8 x i16].

Intel’s documentation