nrm2(3F)

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

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