lsquare.h

/* Copyright (C) 2018, Project Pluto

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */

void *lsquare_init( const int n_params);
int lsquare_add_observation( void *lsquare, const double residual,
                                    const double weight, const double *obs);
int lsquare_solve( const void *lsquare, double *result);
void lsquare_free( void *lsquare);
double *lsquare_covariance_matrix( const void *lsquare);
double *lsquare_wtw_matrix( const void *lsquare);