NAME

       dzsum1.f -

SYNOPSIS

   Functions/Subroutines
       double precision function dzsum1 (N, CX, INCX)
           DZSUM1 forms the 1-norm of the complex vector using the true absolute value.

Function/Subroutine Documentation

   double precision function dzsum1 (integer N, complex*16, dimension( * ) CX, integer INCX)
       DZSUM1 forms the 1-norm of the complex vector using the true absolute value.

       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.

       Parameters:
           N

                     N is INTEGER
                     The number of elements in the vector CX.

           CX

                     CX is COMPLEX*16 array, dimension (N)
                     The vector whose elements will be summed.

           INCX

                     INCX is INTEGER
                     The spacing between successive values of CX.  INCX > 0.

       Author:
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Date:
           September 2012

       Contributors:
           Nick Higham for use with ZLACON.

Author

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