Computes an integer value rounded towards zero for each vector element.
vhTrunc( n, a, y );
vhTruncI(n, a, inca, y, incy);
vmhTrunc( n, a, y, mode );
vmhTruncI(n, a, inca, y, incy, mode);
vsTrunc( n, a, y );
vsTruncI(n, a, inca, y, incy);
vmsTrunc( n, a, y, mode );
vmsTruncI(n, a, inca, y, incy, mode);
vdTrunc( n, a, y );
vdTruncI(n, a, inca, y, incy);
vmdTrunc( n, a, y, mode );
vmdTruncI(n, a, inca, y, incy, mode);
Name |
Type |
Description |
|---|---|---|
n |
const MKL_INT |
Specifies the number of elements to be calculated. |
a |
const _Float16* for vhTrunc, vmhTrunc const float* for vsTrunc, vmsTrunc const double* for vdTrunc, vmdTrunc |
Pointer to an array that contains the input vector a. |
inca, incy |
const MKL_INT |
Specifies increments for the elements of a and y. |
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 |
_Float16* for vhTrunc, vmhTrunc float* for vsTrunc, vmsTrunc double* for vdTrunc, vmdTrunc |
Pointer to an array that contains the output vector y. |
The function computes an integer value rounded towards zero for each vector element.

| Argument | Result | Exception |
|---|---|---|
| +0 | +0 | |
| -0 | -0 | |
| +∞ | +∞ | |
| -∞ | -∞ | |
| SNAN | QNAN | INVALID |
| QNAN | QNAN |