Extract float64 normalized mantissas. Corresponding instruction is
VGETMANTPD.
This intrinsic only applies to Intel® Many
Integrated Core Architecture (Intel® MIC Architecture).
Syntax
Without Mask extern __m512d __cdecl _mm512_getmant_pd(__m512d v2, _MM_MANTISSA_NORM_ENUM i, _MM_MANTISSA_SIGN_ENUM s); |
With Mask
extern __m512d __cdecl _mm512_mask_getmant_pd(__m512d v1_old, __mmask8 k1, __m512d v2, _MM_MANTISSA_NORM_ENUM i, _MM_MANTISSA_SIGN_ENUM s); |
Parameters
v2 |
float64 vector used for the extract operation
|
v1_old |
Source vector that retains old values of the destination vector; the resulting vector gets corresponding elements from
v1_old for zero mask bits |
k1 |
Writemask; only those elements of the source vectors with corresponding bit set to '1' in the
k1 mask are computed and stored in the result; elements in the result vector corresponding to zero bit in
k1 are copied from corresponding elements of vector
v1_old
|
i |
Interval constants for mantissa extraction, where
_MM_MANTISSA_NORM_ENUM takes one of the following values:
- _MM_MANT_NORM_1_2 - interval [1, 2)
- _MM_MANT_NORM_p5_2 - interval [1.5, 2)
- _MM_MANT_NORM_p5_1 - interval [1.5, 1)
- _MM_MANT_NORM_p75_1p5 - interval [0.75, 1.5)
|
s |
Sign constants for mantissa extraction, where
_MM_MANTISSA_SIGN_ENUM takes one of the following values:
- _MM_MANT_SIGN_src - sign = sign(SRC)
- _MM_MANT_SIGN_zero - sign = 0
- _MM_MANT_SIGN_nan - DEST = NaN if sign(SRC) = 1
|
Description
Extracts float64 normalized mantissas from vector
v2 elements.
The masked variant has one additional argument:
k1. Only those elements in the source registers with the corresponding bit set in vector mask
k1 are used for computing.
Returns
Returns the result of the extract operation.