dnrm2 (3p)

Name

dnrm2 - Return the Euclidian norm of a vector.

Synopsis

DOUBLE PRECISION FUNCTION DNRM2(N, X, INCX)

INTEGER N, INCX
DOUBLE PRECISION X(*)

DOUBLE PRECISION FUNCTION DNRM2_64(N, X, INCX)

INTEGER*8 N, INCX
DOUBLE PRECISION X(*)




F95 INTERFACE
REAL(8) FUNCTION NRM2(N, X, INCX)

INTEGER :: N, INCX
REAL(8), DIMENSION(:) :: X

REAL(8) FUNCTION NRM2_64(N, X, INCX)

INTEGER(8) :: N, INCX
REAL(8), DIMENSION(:) :: X




C INTERFACE
#include <sunperf.h>

double dnrm2(int n, double *x, int incx);

double dnrm2_64(long n, double *x, long incx);

Description

Oracle Solaris Studio Performance Library                            dnrm2(3P)



NAME
       dnrm2 - Return the Euclidian norm of a vector.


SYNOPSIS
       DOUBLE PRECISION FUNCTION DNRM2(N, X, INCX)

       INTEGER N, INCX
       DOUBLE PRECISION X(*)

       DOUBLE PRECISION FUNCTION DNRM2_64(N, X, INCX)

       INTEGER*8 N, INCX
       DOUBLE PRECISION X(*)




   F95 INTERFACE
       REAL(8) FUNCTION NRM2(N, X, INCX)

       INTEGER :: N, INCX
       REAL(8), DIMENSION(:) :: X

       REAL(8) FUNCTION NRM2_64(N, X, INCX)

       INTEGER(8) :: N, INCX
       REAL(8), DIMENSION(:) :: X




   C INTERFACE
       #include <sunperf.h>

       double dnrm2(int n, double *x, int incx);

       double dnrm2_64(long n, double *x, long incx);



PURPOSE
       dnrm2 Return the Euclidian norm of a vector x where x is an n-vector.


ARGUMENTS
       N (input)
                 On  entry,  N specifies the number of elements in the vector.
                 N must be at least one for the subroutine to have any visible
                 effect.  Unchanged on exit.


       X (input)
                 (  1  +  (  n - 1 )*abs( INCX ) ).  On entry, the incremented
                 array X must contain the vector x.  Unchanged on exit.


       INCX (input)
                 On entry, INCX specifies the increment for the elements of X.
                 If INCX < 1 then DNRM2 returns 0.  Unchanged on exit.




                                  7 Nov 2015                         dnrm2(3P)