scsum1.f (3) - Linux Manuals

NAME

scsum1.f -

SYNOPSIS

Functions/Subroutines

REAL function scsum1 (N, CX, INCX)
SCSUM1 forms the 1-norm of the complex vector using the true absolute value.

Function/Subroutine Documentation

REAL function scsum1 (integerN, complex, dimension( * )CX, integerINCX)

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.

Date:

September 2012

Contributors:

Nick Higham for use with CLACON.

Definition at line 82 of file scsum1.f.

Author

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