LAPACK  3.4.1
LAPACK: Linear Algebra PACKage
dzsum1.f File Reference

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Functions/Subroutines

DOUBLE PRECISION function DZSUM1 (N, CX, INCX)
 DZSUM1

Function/Subroutine Documentation

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

DZSUM1

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:
November 2011
Contributors:
Nick Higham for use with ZLACON.

Definition at line 82 of file dzsum1.f.

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