dzsum1(3F)

DZSUM1 - take the sum of the absolute values of a complex vector and returns a double precision result

As shipped in IRIX 6.5.5. Unchanged since IRIX 6.5.

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.