Intel® C++ Compiler 16.0 User and Reference Guide
Rounds off to nearest integer not larger in absolute value. Vector variant of trunc(x) function for a float32 argument. This intrinsic only applies to Intel® Many Integrated Core Architecture (Intel® MIC Architecture).
Without Mask extern _m512 __cdecl _mm512_trunc_ps(_m512 v1); |
With Mask extern _m512 __cdecl _mm512_mask_trunc_ps(_m512 v1_old, __mmask16 k1, _m512 v1); |
| v1 | vector of float32 values |
| 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 vector 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 |
Rounds off the elements of vector v1 to the nearest integer value which is not larger in absolute value.
The masked variant has two additional arguments: v1_old and k1 . Those elements of v1 with the corresponding bit clear in vector mask k1 are not used in the computation. Instead, the corresponding element from v1_old is copied to the resulting vector.
Returns the result of the operation.