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MROOT(3pm) User Contributed Perl Documentation MROOT(3pm)

NAME

PDL::GSL::MROOT - PDL interface to multidimensional root-finding routines in GSL

DESCRIPTION

This is an interface to the multidimensional root-finding package present in the GNU Scientific Library.

At the moment there is a single function gslmroot_fsolver which provides an interface to the algorithms in the GSL library that do not use derivatives.

SYNOPSIS

   use PDL;
   use PDL::GSL::MROOT;
   my $init = pdl (-10.00, -5.0);
   my $epsabs = 1e-7;
  $res = gslmroot_fsolver($init, \&rosenbrock,
                          {Method => 0, EpsAbs => $epsabs});
 
  sub rosenbrock{
     my ($x) = @_;
     my $c = 1;
     my $d = 10;
     my $y = zeroes($x);
     my $y0 = $y->slice(0);
     $y0 .=  $c * (1 - $x->slice(0));
     my $y1 = $y->slice(1);
     $y1 .=  $d * ($x->slice(1) - $x->slice(0)**2);
     return $y;
  }
#line 70 "MROOT.pm"

FUNCTIONS

gslmroot_fsolver

  Signature: (double [io]xfree(n);   double epsabs(); int method(); SV* function1)

info not available

gslmroot_fsolver does not process bad values. It will set the bad-value flag of all output ndarrays if the flag is set for any of the input ndarrays.

SEE ALSO

PDL

The GSL documentation is online at

  http://www.gnu.org/software/gsl/manual/

AUTHOR

This file copyright (C) 2006 Andres Jordan <ajordan@eso.org> and Simon Casassus <simon@das.uchile.cl> All rights reserved. There is no warranty. You are allowed to redistribute this software/documentation under certain conditions. For details, see the file COPYING in the PDL distribution. If this file is separated from the PDL distribution, the copyright notice should be included in the file.

2022-10-26 perl v5.36.0