zdscal (3p)

Name

zdscal - Compute y := alpha * y

Synopsis

SUBROUTINE ZDSCAL(N, ALPHA, Y, INCY)

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

SUBROUTINE ZDSCAL_64(N, ALPHA, Y, INCY)

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




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

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

SUBROUTINE SCAL_64(N, ALPHA, Y, INCY)

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




C INTERFACE
#include <sunperf.h>

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

void zdscal_64(long n, double alpha, doublecomplex *y, long incy);

Description

Oracle Solaris Studio Performance Library                           zdscal(3P)



NAME
       zdscal - Compute y := alpha * y


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

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

       SUBROUTINE ZDSCAL_64(N, ALPHA, Y, INCY)

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




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

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

       SUBROUTINE SCAL_64(N, ALPHA, Y, INCY)

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




   C INTERFACE
       #include <sunperf.h>

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

       void zdscal_64(long n, double alpha, doublecomplex *y, long incy);



PURPOSE
       zdscal  Compute  y  := alpha * y where alpha is a scalar and y is an n-
       vector.


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                        zdscal(3P)