zscal (3p)

Name

zscal - Compute y := alpha * y

Synopsis

SUBROUTINE ZSCAL(N, ALPHA, Y, INCY)

DOUBLE COMPLEX ALPHA
DOUBLE COMPLEX Y(*)
INTEGER N, INCY

SUBROUTINE ZSCAL_64(N, ALPHA, Y, INCY)

DOUBLE COMPLEX ALPHA
DOUBLE COMPLEX Y(*)
INTEGER*8 N, INCY




F95 INTERFACE
SUBROUTINE SCAL(N, ALPHA, Y, INCY)

COMPLEX(8) :: ALPHA
COMPLEX(8), DIMENSION(:) :: Y
INTEGER :: N, INCY

SUBROUTINE SCAL_64(N, ALPHA, Y, INCY)

COMPLEX(8) :: ALPHA
COMPLEX(8), DIMENSION(:) :: Y
INTEGER(8) :: N, INCY




C INTERFACE
#include <sunperf.h>

void zscal(int n, doublecomplex *alpha, doublecomplex *y, int incy);

void  zscal_64(long  n,  doublecomplex  *alpha,  doublecomplex *y, long
incy);

Description

Oracle Solaris Studio Performance Library                            zscal(3P)



NAME
       zscal - Compute y := alpha * y


SYNOPSIS
       SUBROUTINE ZSCAL(N, ALPHA, Y, INCY)

       DOUBLE COMPLEX ALPHA
       DOUBLE COMPLEX Y(*)
       INTEGER N, INCY

       SUBROUTINE ZSCAL_64(N, ALPHA, Y, INCY)

       DOUBLE COMPLEX ALPHA
       DOUBLE COMPLEX Y(*)
       INTEGER*8 N, INCY




   F95 INTERFACE
       SUBROUTINE SCAL(N, ALPHA, Y, INCY)

       COMPLEX(8) :: ALPHA
       COMPLEX(8), DIMENSION(:) :: Y
       INTEGER :: N, INCY

       SUBROUTINE SCAL_64(N, ALPHA, Y, INCY)

       COMPLEX(8) :: ALPHA
       COMPLEX(8), DIMENSION(:) :: Y
       INTEGER(8) :: N, INCY




   C INTERFACE
       #include <sunperf.h>

       void zscal(int n, doublecomplex *alpha, doublecomplex *y, int incy);

       void  zscal_64(long  n,  doublecomplex  *alpha,  doublecomplex *y, long
                 incy);



PURPOSE
       zscal Compute y := alpha * y where alpha is a scalar and y is an n-vec-
       tor.


ARGUMENTS
       N (input)
                 On  entry,  N specifies the number of elements in the vector.
                 N must be at least one for the subroutine to have any visible
                 effect.  Unchanged on exit.


       ALPHA (input)
                 On  entry,  ALPHA  specifies  the scalar alpha.  Unchanged on
                 exit.


       Y (input/output)
                 ( 1 + ( n - 1 )*INCY ).  On entry, the  incremented  array  Y
                 must  contain  the vector y. On exit, Y is overwritten by the
                 updated vector y.


       INCY (input)
                 On entry, INCY specifies the increment for the elements of Y.
                 This  routine  returns  immediately  if  INCY is less than or
                 equal to zero.  Unchanged on exit.




                                  7 Nov 2015                         zscal(3P)