dzasum(3P) Sun Performance Library dzasum(3P)NAMEdzasum - Return the sum of the absolute values of a vector x.
SYNOPSIS
DOUBLE PRECISION FUNCTION DZASUM(N, X, INCX)
DOUBLE COMPLEX X(*)
INTEGER N, INCX
DOUBLE PRECISION FUNCTION DZASUM_64(N, X, INCX)
DOUBLE COMPLEX X(*)
INTEGER*8 N, INCX
F95 INTERFACE
REAL(8) FUNCTION ASUM([N], X, [INCX])
COMPLEX(8), DIMENSION(:) :: X
INTEGER :: N, INCX
REAL(8) FUNCTION ASUM_64([N], X, [INCX])
COMPLEX(8), DIMENSION(:) :: X
INTEGER(8) :: N, INCX
C INTERFACE
#include <sunperf.h>
double dzasum(int n, doublecomplex *x, int incx);
double dzasum_64(long n, doublecomplex *x, long incx);
PURPOSEdzasum Return the sum of the absolute values of the elements of x where
x is an n-vector. This is the sum of the absolute values of the real
and complex elements and not the sum of the squares of the real and
complex elements.
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.
X (input)
( 1 + ( n - 1 )*abs( INCX ) ). On entry, the incremented
array X must contain the vector x. Unchanged on exit.
INCX (input)
On entry, INCX specifies the increment for the elements of X.
INCX must not be zero or negative. Unchanged on exit.
6 Mar 2009 dzasum(3P)