Function core::arch::x86::_mm_mullo_epi32
1.27.0 · source · pub unsafe fn _mm_mullo_epi32(a: __m128i, b: __m128i) -> __m128i
Available on (x86 or x86-64) and target feature
sse4.1
and x86 only.Expand description
Multiplies the packed 32-bit integers in a
and b
, producing intermediate
64-bit integers, and returns the lowest 32-bit, whatever they might be,
reinterpreted as a signed integer. While pmulld __m128i::splat(2), __m128i::splat(2)
returns the obvious __m128i::splat(4)
, due to wrapping
arithmetic pmulld __m128i::splat(i32::MAX), __m128i::splat(2)
would
return a negative number.