2. EL 7
  3. blas
  4. DNRM2(3)

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dnrm2.f(3) LAPACK dnrm2.f(3)

NAME

dnrm2.f -

SYNOPSIS

Functions/Subroutines


DOUBLE PRECISION function dnrm2 (N, X, INCX)
DNRM2

Function/Subroutine Documentation

DOUBLE PRECISION function dnrm2 (integerN, double precision, dimension(*)X, integerINCX)

DNRM2 Purpose: 



 DNRM2 returns the euclidean norm of a vector via the function


 name, so that


    DNRM2 := sqrt( x'*x )

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2011

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 55 of file dnrm2.f.

Author

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