Rounds float64 vector. Corresponding instruction is
VRNDFXPNTPD.
This intrinsic only applies to Intel® Many Integrated Core Architecture (Intel® MIC Architecture).
Syntax
Without Mask
extern __m512d __cdecl _mm512_roundfxpnt_adjust_pd(__m512d v2, int rc, _MM_EXP_ADJ_ENUM adj); |
With Mask extern __m512d __cdecl _mm512_mask_roundfxpnt_adjust_pd(__m512d v1_old, __mmask8 k1, __m512d v2, int rc, _MM_EXP_ADJ_ENUM adj); |
Parameters
v2 |
float32 vector used for rounding |
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
|
expadj |
Exponent adjustment values; these can be one of the following values:
- _MM_EXPADJ_NONE - 2**0 (32.0 - no exp adjustment)
- _MM_EXPADJ_4 - 2**4 (28.4)
- _MM_EXPADJ_5 - 2**5 (27.5)
- _MM_EXPADJ_8 - 2**8 (24.8)
- _MM_EXPADJ_16 - 2**16 (16.16)
- _MM_EXPADJ_24 - 2**24 (8.24)
- _MM_EXPADJ_31 - 2**31 (1.31)
- _MM_EXPADJ_32 - 2**32 (0.32)
|
rc |
Rounding control values; these can be one of the following:
- _MM_FROUND_TO_NEAREST_INT - rounds to nearest even
- _MM_FROUND_TO_NEG_INF - rounds to negative infinity
- _MM_FROUND_TO_POS_INF - rounds to positive infinity
- _MM_FROUND_TO_ZERO - rounds to zero
- _MM_FROUND_CUR_DIRECTION - rounds using default from MXCSR register
|
Description
Rounds float64 vector
v2 according to rc and expadj values.
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 rounding operation.