# Function _mm_cvt_roundss_u64

Source

    pub fn _mm_cvt_roundss_u64(a: __m128, const ROUNDING: i32) -> u64

🔬This is a nightly-only experimental API. (`stdarch_x86_avx512` #111137)
Available on x86-64 and target feature `avx512f` only.
Expand description

Convert the lower single-precision (32-bit) floating-point element in a to an unsigned 64-bit integer, and store the result 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`

Intel’s documentation