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## _mm_round_ps

# Function _mm_round_ps

1.27.0 · Source

    pub fn _mm_round_ps(a: __m128, const ROUNDING: i32) -> __m128

Available on x86-64 and target feature `sse4.1` only.
Expand description

Round the packed single-precision (32-bit) floating-point elements in `a` using the `ROUNDING` parameter, and stores the results as packed single-precision floating-point elements. Rounding is done according to the 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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