dnrm2.f

Section: LAPACK (3)
Updated: Tue Nov 14 2017
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NAME

dnrm2.f  

SYNOPSIS


 

Functions/Subroutines


double precision function dnrm2 (N, X, INCX)
DNRM2  

Function/Subroutine Documentation

 

double precision function dnrm2 (integer N, double precision, dimension(*) X, integer INCX)

DNRM2

Purpose: 

 DNRM2 returns the euclidean norm of a vector via the function
 name, so that

    DNRM2 := sqrt( x'*x )


 

Parameters:

N 

          N is INTEGER
         number of elements in input vector(s)


X 

          X is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )


INCX 

          INCX is INTEGER
         storage spacing between elements of DX


 

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2017

Further Details: 

  -- This version written on 25-October-1982.
     Modified on 14-October-1993 to inline the call to DLASSQ.
     Sven Hammarling, Nag Ltd.


 

Definition at line 76 of file dnrm2.f.  

Author

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Index

NAME
SYNOPSIS
Functions/Subroutines
Function/Subroutine Documentation
double precision function dnrm2 (integer N, double precision, dimension(*) X, integer INCX)
Author