Function core::arch::x86_64::_mm_cvtsi32_si64

pub unsafe fn _mm_cvtsi32_si64(a: i32) -> __m64

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on x86-64 and target feature mmx only.

Copies 32-bit integer a to the lower elements of the return value, and zero the upper element of the return value.