Intel® Math Kernel Library 2019 Developer Reference - C
Computes absolute value of vector elements.
vsAbs( n, a, y );
vmsAbs( n, a, y, mode );
vdAbs( n, a, y );
vmdAbs( n, a, y, mode );
vcAbs( n, a, y );
vmcAbs( n, a, y, mode );
vzAbs( n, a, y );
vmzAbs( n, a, y, mode );
Name |
Type |
Description |
---|---|---|
n |
const MKL_INT |
Specifies the number of elements to be calculated. |
a |
const float* for vsAbs, vmsAbs const double* for vdAbs, vmdAbs const MKL_Complex8* for vcAbs, vmcAbs const MKL_Complex16* for vzAbs, vmzAbs |
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 vsAbs, vmsAbs, vcAbs, vmcAbs double* for vdAbs, vmdAbs, vzAbs, vmzAbs |
Pointer to an array that contains the output vector y. |
The v?Abs function computes an absolute value of vector elements.
Argument | Result | Exception |
---|---|---|
+0 | +0 | |
-0 | +0 | |
+∞ | +∞ | |
-∞ | +∞ | |
QNAN | QNAN | |
SNAN | QNAN | INVALID |
Specifications for special values of the complex functions are defined according to the following formula
Abs(z) = Hypot(RE(z),IM(z)).