# # GENERATED WITH PDL::PP! Don't modify! # package PDL::GSL::MROOT; our @EXPORT_OK = qw(gslmroot_fsolver gslmroot_fsolver ); our %EXPORT_TAGS = (Func=>\@EXPORT_OK); use PDL::Core; use PDL::Exporter; use DynaLoader; our @ISA = ( 'PDL::Exporter','DynaLoader' ); push @PDL::Core::PP, __PACKAGE__; bootstrap PDL::GSL::MROOT ; =head1 NAME PDL::GSL::MROOT - PDL interface to multidimensional root-finding routines in GSL =head1 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 B<gslmroot_fsolver> which provides an interface to the algorithms in the GSL library that do not use derivatives. =head1 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 $y; } =head1 FUNCTIONS =cut =head2 gslmroot_fsolver =for sig Signature: (double [io]xfree(n); double epsabs(); int method(); SV* function1) =for ref info not available =for bad gslmroot_fsolver does not process bad values. It will set the bad-value flag of all output ndarrays if the flag is set for any of the input ndarrays. =cut sub gslmroot_fsolver { my ($x, $f_vect) = @_; my $opt = ref($_[-1]) eq 'HASH' ? pop @_ : {Method => 0, EpsAbs => 1e-3}; if( (ref($x) ne 'PDL')){ barf("Have to pass ndarray as first argument to fsolver\n"); } my $res = $x->copy; _gslmroot_fsolver_int($res, $$opt{'EpsAbs'}, $$opt{'Method'}, $f_vect); return $res; } *gslmroot_fsolver = \&PDL::GSL::MROOT::gslmroot_fsolver; =head1 SEE ALSO L<PDL> The GSL documentation is online at http://www.gnu.org/software/gsl/manual/ =head1 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. =cut # Exit with OK status 1;