LAPACK  3.4.2
LAPACK: Linear Algebra PACKage
 All Files Functions Groups
dzsum1.f File Reference

Go to the source code of this file.

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.

Download DZSUM1 + dependencies [TGZ] [ZIP] [TXT]
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:
[in]N
          N is INTEGER
          The number of elements in the vector CX.
[in]CX
          CX is COMPLEX*16 array, dimension (N)
          The vector whose elements will be summed.
[in]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.

Definition at line 82 of file dzsum1.f.

Here is the caller graph for this function: