Function core::arch::x86::_mm512_getmant_pd
source · pub unsafe fn _mm512_getmant_pd(
a: __m512d,
const NORM: _MM_MANTISSA_NORM_ENUM,
const SIGN: _MM_MANTISSA_SIGN_ENUM,
) -> __m512d
stdarch_x86_avx512
#111137)avx512f
and x86 only.Expand description
Normalize the mantissas of packed double-precision (64-bit) floating-point elements in a, and store the results in dst. This intrinsic essentially calculates ±(2^k)*|x.significand|, where k depends on the interval range defined by interv and the sign depends on sc and the source sign.
The mantissa is normalized to the interval specified by interv, which can take the following values:
_MM_MANT_NORM_1_2 // interval [1, 2)
_MM_MANT_NORM_p5_2 // interval [0.5, 2)
_MM_MANT_NORM_p5_1 // interval [0.5, 1)
_MM_MANT_NORM_p75_1p5 // interval [0.75, 1.5)
The sign is determined by sc which can take the following values:
_MM_MANT_SIGN_src // sign = sign(src)
_MM_MANT_SIGN_zero // sign = 0
_MM_MANT_SIGN_nan // dst = NaN if sign(src) = 1