# Function _mm_cvtps_ph

1.68.0 · Source

    pub fn _mm_cvtps_ph(a: __m128, const IMM_ROUNDING: i32) -> __m128i

Available on (x86 or x86-64) and target feature `f16c` and x86 only.
Expand description

Converts 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.

Rounding is done according to the `imm_rounding` parameter, which can be one of:

- `_MM_FROUND_TO_NEAREST_INT` | `_MM_FROUND_NO_EXC` : round to nearest and suppress exceptions
- `_MM_FROUND_TO_NEG_INF` | `_MM_FROUND_NO_EXC` : round down and suppress exceptions
- `_MM_FROUND_TO_POS_INF` | `_MM_FROUND_NO_EXC` : round up and suppress exceptions
- `_MM_FROUND_TO_ZERO` | `_MM_FROUND_NO_EXC` : truncate and suppress exceptions
- `_MM_FROUND_CUR_DIRECTION` : use `MXCSR.RC` - see `_MM_SET_ROUNDING_MODE`

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