1.27.0[−][src]Function core::arch::x86::_mm_round_ss
pub unsafe fn _mm_round_ss(a: __m128, b: __m128, rounding: i32) -> __m128
This is supported on x86 and target feature
sse4.1
only.Round the lower single-precision (32-bit) floating-point element in b
using the rounding
parameter, store the result as a single-precision
floating-point element in the lower element of the intrinsic result,
and copies the upper 3 packed elements from a
to the upper elements
of the instrinsic result.
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