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LAPACK: Linear Algebra PACKage
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dnrm2.f File Reference

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Functions/Subroutines

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

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 )
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.

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