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| -rw-r--r-- | tests/pick.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/tests/pick.h b/tests/pick.h new file mode 100644 index 0000000..3e43bd5 --- /dev/null +++ b/tests/pick.h @@ -0,0 +1,172 @@ +/* + * Routines for generating anything randomly + * + * Authors: + * Marco Cecchetti <mrcekets at gmail.com> + * + * Copyright 2008 authors + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + */ + +#ifndef _GEOM_SL_PICK_H_ +#define _GEOM_SL_PICK_H_ + + +#include <2geom/symbolic/multipoly.h> +#include <2geom/symbolic/matrix.h> + +inline +size_t pick_uint(size_t max) +{ + return (std::rand() % (max+1)); +} + +inline +int pick_int(size_t max) +{ + int s = pick_uint(2); + if (s == 0) s = -1; + return s * (std::rand() % (max+1)); +} + +inline +Geom::SL::multi_index_type pick_multi_index(size_t N, size_t max) +{ + Geom::SL::multi_index_type I(N); + for (size_t i = 0; i < I.size(); ++i) + I[i] = pick_uint(max); + return I; +} + +template <size_t N> +inline +typename Geom::SL::mvpoly<N, double>::type +pick_polyN(size_t d, size_t m) +{ + typename Geom::SL::mvpoly<N, double>::type p; + size_t d0 = pick_uint(d); + for (size_t i = 0; i <= d0; ++i) + { + p.coefficient(i, pick_polyN<N-1>(d, m)); + } + return p; +} + +template <> +inline +double pick_polyN<0>(size_t /*d*/, size_t m) +{ + return pick_int(m); +} + + +template <size_t N> +inline +typename Geom::SL::mvpoly<N, double>::type +pick_poly_max(size_t d, size_t m) +{ + typename Geom::SL::mvpoly<N, double>::type p; + for (size_t i = 0; i <= d; ++i) + { + p.coefficient(i, pick_poly_max<N-1>(d-i, m)); + } + return p; +} + +template <> +inline +double pick_poly_max<0>(size_t /*d*/, size_t m) +{ + return pick_int(m); +} + + +template <size_t N> +inline +Geom::SL::MultiPoly<N, double> +pick_multipoly(size_t d, size_t m) +{ + return Geom::SL::MultiPoly<N, double>(pick_polyN<N>(d, m)); +} + +template <size_t N> +inline +Geom::SL::MultiPoly<N, double> +pick_multipoly_max(size_t d, size_t m) +{ + return Geom::SL::MultiPoly<N, double>(pick_poly_max<N>(d, m)); +} + + + +inline +Geom::SL::Matrix< Geom::SL::MultiPoly<2, double> > +pick_matrix(size_t n, size_t d, size_t m) +{ + Geom::SL::Matrix< Geom::SL::MultiPoly<2, double> > M(n, n); + for (size_t i = 0; i < n; ++i) + { + for (size_t j = 0; j < n; ++j) + { + M(i,j) = pick_multipoly_max<2>(d, m); + } + } + return M; +} + + +inline +Geom::SL::Matrix< Geom::SL::MultiPoly<2, double> > +pick_symmetric_matrix(size_t n, size_t d, size_t m) +{ + Geom::SL::Matrix< Geom::SL::MultiPoly<2, double> > M(n, n); + for (size_t i = 0; i < n; ++i) + { + for (size_t j = 0; j < i; ++j) + { + M(i,j) = M(j,i) = pick_multipoly_max<2>(d, m); + } + } + for (size_t i = 0; i < n; ++i) + { + M(i,i) = pick_multipoly_max<2>(d, m); + } + return M; +} + + +#endif // _GEOM_SL_PICK_H_ + + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |