Intel® Math Kernel Library 2019 Developer Reference - C
Computes a value rounded to the nearest integer for each vector element.
vsRound( n, a, y );
vmsRound( n, a, y, mode );
vdRound( n, a, y );
vmdRound( n, a, y, mode );
Name |
Type |
Description |
---|---|---|
n |
const MKL_INT |
Specifies the number of elements to be calculated. |
a |
const float* for vsRound, vmsRound const double* for vdRound, vmdRound |
Pointer to an array that contains the input vector a. |
mode |
const MKL_INT64 |
Overrides global VM mode setting for this function call. See vmlSetMode for possible values and their description. |
Name |
Type |
Description |
---|---|---|
y |
float* for vsRound, vmsRound double* for vdRound, vmdRound |
Pointer to an array that contains the output vector y. |
The function computes a value rounded to the nearest integer for each vector element. Input elements that are halfway between two consecutive integers are always rounded away from zero regardless of the rounding mode.
Argument | Result | Exception |
---|---|---|
+0 | +0 | |
-0 | -0 | |
+∞ | +∞ | |
-∞ | -∞ | |
SNAN | QNAN | INVALID |
QNAN | QNAN |