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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	CentOS 4.8	i386
	dzsum1(l)

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DZSUM1

NAME
SYNOPSIS
PURPOSE
ARGUMENTS

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NAME

DZSUM1 - take the sum of the absolute values of a complex vector and returns a double precision result

SYNOPSIS

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

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.

Contributed by Nick Higham for use with ZLACON.

ARGUMENTS

N (input) INTEGER

The number of elements in the vector CX.

CX (input) COMPLEX*16 array, dimension (N)

The vector whose elements will be summed.

INCX (input) INTEGER

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

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dzsum1(l)