05c33b052a
* lib/libc+tcc.c (qswap, qpart): New function
(qsort): Implement.
* scaffold/tests/81-qsort.c: Test it.
* make.scm ("81-qsort"): Build it.
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2017 Jan Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "30-test.i"
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#include <string.h>
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int
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compare_int (void *a, void *b)
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{
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eputs ("compare: "); eputs (itoa (*(int*)a)); eputs (" <? "); eputs (itoa (*(int*)b));
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eputs (" => "); eputs (itoa (*(int*)a - *(int*)b)); eputs ("\n");
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return *(int*)a - *(int*)b;
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}
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int
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test ()
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{
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int lst[6] = {0, 5, 4, 3, 2, -1};
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qsort (lst, 6, sizeof (int), compare_int);
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for (int i = 0; i < 6; i++)
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{
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eputs (itoa (i)); eputs (":"); eputs (itoa (lst[i])); eputs ("\n");
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}
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if (lst[0] != -1) return 1;
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if (lst[5] != 5) return 2;
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return 0;
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}
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