_mm_cvtps_ph in core::arch::x86_64 - Rust
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.
Keywords: rust, rustlang, rust-lang, _mm_cvtps_ph

# Function core::arch::x86_64::_mm_cvtps_ph
[−][src]

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

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `f16c` 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`.