Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

v?Abs

Computes absolute value of vector elements.

Syntax

vsAbs
(
n
,
a
,
y
)
;
vsAbsI(n, a, inca, y, incy);
vmsAbs
(
n
,
a
,
y
,
mode
)
;
vmsAbsI(n, a, inca, y, incy, mode);
vdAbs
(
n
,
a
,
y
)
;
vdAbsI(n, a, inca, y, incy);
vmdAbs
(
n
,
a
,
y
,
mode
)
;
vmdAbsI(n, a, inca, y, incy, mode);
vcAbs
(
n
,
a
,
y
)
;
vcAbsI(n, a, inca, y, incy);
vmcAbs
(
n
,
a
,
y
,
mode
)
;
vmcAbsI(n, a, inca, y, incy, mode);
vzAbs
(
n
,
a
,
y
)
;
vzAbsI(n, a, inca, y, incy);
vmzAbs
(
n
,
a
,
y
,
mode
)
;
vmzAbsI(n, a, inca, y, incy, mode);
Include Files
  • mkl.h
Input Parameters
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
.
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.
Output Parameters
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
.
Description
The
v?Abs
function computes an absolute value of vector elements.
Special Values for Real Function
v?Abs(x)
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))
.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.