sum1(3)                    Library Functions Manual                    sum1(3)

NAME
       sum1 - sum1: sum | x_i | (in LAPACK)

SYNOPSIS
   Functions
       double precision function dzsum1 (n, cx, incx)
           DZSUM1 forms the 1-norm of the complex vector using the true
           absolute value.
       real function scsum1 (n, cx, incx)
           SCSUM1 forms the 1-norm of the complex vector using the true
           absolute value.

Detailed Description
Function 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.

       Contributors:
           Nick Higham for use with ZLACON.

       Definition at line 80 of file dzsum1.f.

   real function scsum1 (integer n, complex, dimension( * ) cx, integer incx)
       SCSUM1 forms the 1-norm of the complex vector using the true absolute
       value.

       Purpose:


            SCSUM1 takes the sum of the absolute values of a complex
            vector and returns a single precision result.

            Based on SCASUM 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 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.

       Contributors:
           Nick Higham for use with CLACON.

       Definition at line 80 of file scsum1.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0                         sum1(3)