_mm_mul_round_sd in core::arch::x86 - Rust
Description: Multiply the lower double-precision (64-bit) floating-point element in a and b, store the result in the lower element of dst, and copy the upper element from a to the upper element of dst.\

## _mm_mul_round_sd

# Function _mm_mul_round_sd

1.89.0 · Source

    pub fn _mm_mul_round_sd(a: __m128d, b: __m128d, const ROUNDING: i32) -> __m128d

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

Multiply the lower double-precision (64-bit) floating-point element in a and b, store the result in the lower element of dst, and copy the upper element from a to the upper element of 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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