dzsum1.f(3) LAPACK dzsum1.f(3)NAMEdzsum1.f-
SYNOPSIS
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 (integerN, complex*16, dimension( * )CX,
integerINCX)
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.
Date:
September 2012
Contributors:
Nick Higham for use with ZLACON.
Definition at line 82 of file dzsum1.f.
Author
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Version 3.4.2 Tue Sep 25 2012 dzsum1.f(3)