Developer Reference

  • 2020.2
  • 07/15/2020
  • Public Content
Contents

?lacrt

Performs a linear transformation of a pair of complex vectors.

Syntax

call clacrt
(
n
,
cx
,
incx
,
cy
,
incy
,
c
,
s
)
call zlacrt
(
n
,
cx
,
incx
,
cy
,
incy
,
c
,
s
)
Include Files
  • mkl.fi
Description
The routine performs the following transformation
Equation
where
c
,
s
are complex scalars and
x
,
y
are complex vectors.
Input Parameters
n
INTEGER
. The number of elements in the vectors
cx
and
cy
(
n
0
).
cx
,
cy
COMPLEX
for
clacrt
DOUBLE COMPLEX
for
zlacrt
Arrays, dimension (
n
).
Contain input vectors
x
and
y
, respectively.
incx
INTEGER
. The increment between successive elements of
cx
.
incy
INTEGER
. The increment between successive elements of
cy
.
c
,
s
COMPLEX
for
clacrt
DOUBLE COMPLEX
for
zlacrt
Complex scalars that define the transform matrix
Equation
Output Parameters
cx
On exit, overwritten with
c
*
x
+
s
*
y
.
cy
On exit, overwritten with
-s
*
x
+
c
*
y
.

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