NAME

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

SYNOPSIS

DOUBLE PRECISION DASUM (N, X, INCX)

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

INTEGER INCX, N

DOUBLE PRECISION X( ∗ )

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.

Sun, Inc.  —  Last change: 20 Sep 1996