Function _mm_cvtph_ps 

pub fn _mm_cvtph_ps(a: __m128i) -> __m128

Available on x86 and target feature f16c only.

Converts the 4 x 16-bit half-precision float values in the lowest 64-bit of the 128-bit vector a into 4 x 32-bit float values stored in a 128-bit wide vector.

Intel’s documentation