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## _mm512_fmaddsub_round_ps

# Function _mm512_fmaddsub_round_ps

1.89.0 · Source

    pub fn _mm512_fmaddsub_round_ps(
        a: __m512,
        b: __m512,
        c: __m512,
        const ROUNDING: i32,
    ) -> __m512

Available on x86-64 and target feature `avx512f` only.
Expand description

Multiply packed single-precision (32-bit) floating-point elements in a and b, alternatively add and subtract packed elements in c to/from the intermediate result, and store the results in dst.\

Rounding is done according to the rounding[3:0] 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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