Function _mm_cvtsd_ss
#[target_feature(enable = "sse2")]
pub fn _mm_cvtsd_ss(a: __m128, b: __m128d) -> __m128Converts the lower double-precision (64-bit) floating-point element in b
to a single-precision (32-bit) floating-point element, store the result in
the lower element of the return value, and copies the upper element from a
to the upper element the return value.