pub unsafe fn _mm_round_sd(
    a: __m128d,
    b: __m128d,
    const ROUNDING: i32,
) -> __m128dAvailable on (x86 or x86-64) and target feature 
sse4.1 and x86 only.Expand description
Round the lower double-precision (64-bit) floating-point element in b
using the ROUNDING parameter, store the result as a double-precision
floating-point element in the lower element of the intrinsic result,
and copies the upper element from a to the upper element of the intrinsic
result.
Rounding is done according to the rounding 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