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

# Function core::arch::x86_64::_mm_round_ps
1.27.0[−][src]

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

This is supported 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:

    #[cfg(target_arch = "x86")]
    use std::arch::x86::*;
    #[cfg(target_arch = "x86_64")]
    use std::arch::x86_64::*;

    // round to nearest, and suppress exceptions:
    _MM_FROUND_TO_NEAREST_INT | _MM_FROUND_NO_EXC;
    // round down, and suppress exceptions:
    _MM_FROUND_TO_NEG_INF | _MM_FROUND_NO_EXC;
    // round up, and suppress exceptions:
    _MM_FROUND_TO_POS_INF | _MM_FROUND_NO_EXC;
    // truncate, and suppress exceptions:
    _MM_FROUND_TO_ZERO | _MM_FROUND_NO_EXC;
    // use MXCSR.RC; see `_MM_SET_ROUNDING_MODE`:
    _MM_FROUND_CUR_DIRECTION;

Run

Intel’s documentation