NAME

zdrscl - multiply an n-element complex vector x by the real scalar 1/a

SYNOPSIS

SUBROUTINE ZDRSCL( N, SA, SX, INCX )

INTEGER INCX, N

DOUBLE PRECISION SA

COMPLEX∗16 SX( ∗ )

#include <sunperf.h>

void zdrscl(int n, double sa, doublecomplex ∗sx, int incx) ;

PURPOSE

ZDRSCL multiplies an n-element complex vector x by the real scalar 1/a.  This is done without overflow or underflow as long as the final result x/a does not overflow or underflow. 
 

ARGUMENTS

N (input) INTEGER
The number of components of the vector x.

SA (input) DOUBLE PRECISION
The scalar a which is used to divide each component of x. SA must be >= 0, or the subroutine will divide by zero.

SX (input/output) COMPLEX∗16 array, dimension
(1+(N-1)∗abs(INCX)) The n-element vector x.

INCX (input) INTEGER
The increment between successive values of the vector SX. > 0:  SX(1) = X(1) and SX(1+(i-1)∗INCX) = x(i),     1< i<= n

SunOS 5.0  —  Last change: 10 Dec 1998