Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content
Contents

v?CopySign

Returns vector of elements of one argument with signs changed to match other argument elements.

Syntax

vsCopySign
(
n
,
a
,
y
);
vsCopySignI(n, a, inca, b, incb, y, incy);
vmsCopySign
(
n
,
a
,
y
,
mode
);
vmsCopySignI(n, a, inca, b, incb, y, incy, mode);
vdCopySign
(
n
,
a
,
y
);
vdCopySignI(n, a, inca, b, incb, y, incy);
vmdCopySign
(
n
,
a
,
y
,
mode
);
vmdCopySignI(n, a, inca, b, incb, 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
vsCopySign
const float*
 for
vmsCopySign
const double*
 for
vdCopySign
const double*
 for
vmdCopySign
Pointer to the array containing the input vector
a
.
inca
,
incb
,
incy
const MKL_INT
Specifies increments for the elements of
a
,
b
, and
y
.
mode
const MKL_INT64
Overrides the global VM
mode
 setting for this function call. See
vmlSetMode
 for possible values and their description.
Output Parameters
Name
Type
Description
y
float*
 for
vsCopySign
float*
 for
vmsCopySign
double*
 for
vdCopySign
double*
 for
vmdCopySign
Pointer to an array containing the output vector
y
.
Description
The
v?CopySign
 function returns the first vector argument elements with the sign changed to match the sign of the second vector argument's corresponding elements.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804