scsum1(3)

Usage

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 (integer n, complex, dimension( * ) cx, integer incx)

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.

Contributors:

Nick Higham for use with CLACON.

Definition at line 80 of file scsum1.f.

Releases

14 releases since Debian 1.3 (Bo); the text changed 11 times.