Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

RedHat 9 (Linux i386) - man page for slaed6 (redhat section l)

SLAED6(l)					)					SLAED6(l)

NAME
       SLAED6  -  compute the positive or negative root (closest to the origin) of z(1) z(2) z(3)
       f(x) = rho + --------- + ---------- + --------- d(1)-x d(2)-x d(3)-x  It is  assumed  that
       if ORGATI = .true

SYNOPSIS
       SUBROUTINE SLAED6( KNITER, ORGATI, RHO, D, Z, FINIT, TAU, INFO )

	   LOGICAL	  ORGATI

	   INTEGER	  INFO, KNITER

	   REAL 	  FINIT, RHO, TAU

	   REAL 	  D( 3 ), Z( 3 )

PURPOSE
       SLAED6  computes  the  positive or negative root (closest to the origin) of z(1) z(2) z(3)
       f(x) = rho + --------- + ---------- + --------- d(1)-x d(2)-x d(3)-x It is assumed that if
       ORGATI  = .true. the root is between d(2) and d(3);	 otherwise it is between d(1) and
       d(2)

       This routine will be called by SLAED4 when necessary. In most cases, the  root  sought  is
       the smallest in magnitude, though it might not be in some extremely rare situations.

ARGUMENTS
       KNITER	    (input) INTEGER
		    Refer to SLAED4 for its significance.

       ORGATI	    (input) LOGICAL
		    If	ORGATI is true, the needed root is between d(2) and d(3); otherwise it is
		    between d(1) and d(2).  See SLAED4 for further details.

       RHO	    (input) REAL
		    Refer to the equation f(x) above.

       D	    (input) REAL array, dimension (3)
		    D satisfies d(1) < d(2) < d(3).

       Z	    (input) REAL array, dimension (3)
		    Each of the elements in z must be positive.

       FINIT	    (input) REAL
		    The value of f at 0. It is more accurate than the one evaluated  inside  this
		    routine (if someone wants to do so).

       TAU	    (output) REAL
		    The root of the equation f(x).

       INFO	    (output) INTEGER
		    = 0: successful exit
		    > 0: if INFO = 1, failure to converge

FURTHER DETAILS
       Based on contributions by
	  Ren-Cang Li, Computer Science Division, University of California
	  at Berkeley, USA

LAPACK version 3.0			   15 June 2000 				SLAED6(l)


All times are GMT -4. The time now is 11:39 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password