Intel® Math Kernel Library 2019 Developer Reference - C
Computes an exponential of vector elements decreased by 1.
vsExpm1( n, a, y );
vmsExpm1( n, a, y, mode );
vdExpm1( n, a, y );
vmdExpm1( n, a, y, mode );
Name |
Type |
Description |
|---|---|---|
n |
const MKL_INT |
Specifies the number of elements to be calculated. |
a |
const float* for vsExpm1, vmsExpm1 const double* for vdExpm1, vmdExpm1 |
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. |
| Data Type | Threshold Limitations on Input Parameters |
|---|---|
| single precision | a[i] < Ln( FLT_MAX ) |
| double precision | a[i] < Ln( DBL_MAX ) |
Name |
Type |
Description |
|---|---|---|
y |
float* for vsExpm1, vmsExpm1 double* for vdExpm1, vmdExpm1 |
Pointer to an array that contains the output vector y. |
The v?Expm1 function computes an exponential of vector elements decreased by 1.
| Argument | Result | VM Error Status | Exception |
|---|---|---|---|
| +0 | +0 | ||
| -0 | +0 | ||
| X > overflow | +∞ | VML_STATUS_OVERFLOW | OVERFLOW |
| +∞ | +∞ | ||
| -∞ | -1 | ||
| QNAN | QNAN | ||
| SNAN | QNAN | INVALID |