_mm256_cvtph_psConverts the 8 x 16-bit half-precision float values in the 128-bit vector
a into 8 x 32-bit float values stored in a 256-bit wide vector.
_mm256_cvtps_phConverts the 8 x 32-bit float values in the 256-bit vector a into 8 x
16-bit half-precision float values stored in a 128-bit wide vector.
_mm_cvtph_psConverts 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.
_mm_cvtps_phConverts the 4 x 32-bit float values in the 128-bit vector a into 4 x
16-bit half-precision float values stored in the lowest 64-bit of a 128-bit
vector.