_NRM2(3F)							     _NRM2(3F)

NAME    [Toc]    [Back]

     dnrm2, snrm2, zdnrm2, csnrm2 - BLAS level ONE Euclidean norm functions.

SYNOPSIS    [Toc]    [Back]

     double precision  dnrm2( n, x, incx )
     integer	       incx, n
     double precision  x( 1 )

     real	       snrm2( n, x, incx )
     integer	       incx, n
     real	       x( 1 )

     double precision  zdnrm2( n, x, incx )
     integer	       incx, n
     complex*16	       x( 1 )

     real	       csnrm2( n, x, incx )
     integer	       incx, n
     complex	       x( 1 )

DESCRIPTION    [Toc]    [Back]

     DNRM2, SNRM2, ZDNRM2, CSNRM2 compute the Euclidean	norm of	the vector X
     of	length N and increment INCX.
	 nrm2 <--- Sqrt	( Sum( X(i)**2 ) )		   DNRM2  and SNRM2
	 nrm2 <--- Sqrt	( Sum( conjg( X(i) ) * X(i) ) )	   DZNRM2 and SCNRM2

AUTHORS    [Toc]    [Back]

	  C.L. Lawson, linpack,	1/08/78.


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