dzsum1(3)

NAME

DZSUM1 - take the sum of the absolute values of a complex

vector and returns a double precision result

SYNOPSIS

DOUBLE PRECISION FUNCTION DZSUM1( N, CX, INCX )
    INTEGER      INCX, N
    COMPLEX*16   CX( * )

PURPOSE

DZSUM1 takes the sum of the absolute values of a complex

vector and returns a double precision result. Based on DZASUM

from the Level 1 BLAS.
The change is to use the 'genuine' absolute value.

Contributed by Nick Higham for use with ZLACON.

ARGUMENTS

N (input) INTEGER

The number of elements in the vector CX.

CX (input) COMPLEX*16 array, dimension (N)

The vector whose elements will be summed.

INCX (input) INTEGER

The spacing between successive values of CX. INCX

> 0.

LAPACK version 3.0 15 June 2000

DZSUM1(3)