snrm2 man page on OpenIndiana

snrm2 man page on OpenIndiana

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snrm2(3P)		    Sun Performance Library		     snrm2(3P)

NAME
       snrm2 - Return the Euclidian norm of a vector.

SYNOPSIS
       REAL FUNCTION SNRM2(N, X, INCX)

       INTEGER N, INCX
       REAL X(*)

       REAL FUNCTION SNRM2_64(N, X, INCX)

       INTEGER*8 N, INCX
       REAL X(*)

   F95 INTERFACE
       REAL FUNCTION NRM2([N], X, [INCX])

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

       REAL FUNCTION NRM2_64([N], X, [INCX])

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

   C INTERFACE
       #include <sunperf.h>

       float snrm2(int n, float *x, int incx);

       float snrm2_64(long n, float *x, long incx);

PURPOSE
       snrm2 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 SNRM2 returns 0.  Unchanged on exit.

				  6 Mar 2009			     snrm2(3P)

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