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1 /*
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2 * Copyright (c) 2003, 2007-14 Matteo Frigo
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3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
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4 *
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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18 *
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19 */
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20
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21
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22 #include "kernel/ifftw.h"
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23
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24 /* constructor */
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25 problem *X(mkproblem)(size_t sz, const problem_adt *adt)
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26 {
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27 problem *p = (problem *)MALLOC(sz, PROBLEMS);
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28
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29 p->adt = adt;
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30 return p;
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31 }
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32
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33 /* destructor */
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34 void X(problem_destroy)(problem *ego)
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35 {
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36 if (ego)
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37 ego->adt->destroy(ego);
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38 }
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39
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40 /* management of unsolvable problems */
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41 static void unsolvable_destroy(problem *ego)
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42 {
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43 UNUSED(ego);
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44 }
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45
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46 static void unsolvable_hash(const problem *p, md5 *m)
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47 {
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48 UNUSED(p);
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49 X(md5puts)(m, "unsolvable");
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50 }
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51
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52 static void unsolvable_print(const problem *ego, printer *p)
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53 {
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54 UNUSED(ego);
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55 p->print(p, "(unsolvable)");
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56 }
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57
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58 static void unsolvable_zero(const problem *ego)
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59 {
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60 UNUSED(ego);
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61 }
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62
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63 static const problem_adt padt =
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64 {
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65 PROBLEM_UNSOLVABLE,
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66 unsolvable_hash,
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67 unsolvable_zero,
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68 unsolvable_print,
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69 unsolvable_destroy
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70 };
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71
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72 /* there is no point in malloc'ing this one */
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73 static problem the_unsolvable_problem = { &padt };
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74
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75 problem *X(mkproblem_unsolvable)(void)
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76 {
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77 return &the_unsolvable_problem;
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78 }
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