NAME

dasum - Return the sum of the absolute values of a vector x. 

SYNOPSIS

DOUBLE PRECISION DASUM (N, X, INCX)

INTEGER INCX, N

DOUBLE PRECISION X( ∗ )

#include <sunperf.h>

double dasum(int n, double ∗dx, int incx) ;

PURPOSE

DASUM - Return the sum of the absolute values of x where x is an n-vector. 
 

PARAMETERS

N - INTEGER. 
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 - DOUBLE PRECISION array of DIMENSION at least
( 1 + ( m - 1 )∗abs( INCY ) ). On entry, the incremented array X must contain the vector x. On exit, X is overwritten by the updated vector x.

INCX - INTEGER. 
On entry, INCX specifies the increment for the elements of X. INCX must not be zero. Unchanged on exit.

SunOS 5.0  —  Last change: 10 Dec 1998