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48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* Test qsort_r.
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Copyright 2014-2017 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it 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
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert. */
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#include <config.h>
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#include <stdlib.h>
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#include <string.h>
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int
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cmp (void const *va, void const *vb, void *varg)
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{
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char const *a = va;
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char const *b = vb;
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int *arg = varg;
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return (*a < *b ? -1 : *a > *b) * *arg;
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}
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int
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main (void)
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{
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char buf[] = "thequickbrownfoxjumpedoverthelazydogs";
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int forward = 1;
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int reverse = -1;
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qsort_r (buf, sizeof buf - 1, 1, cmp, &forward);
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if (strcmp (buf, "abcddeeeefghhijklmnoooopqrrsttuuvwxyz") != 0)
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return 1;
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qsort_r (buf, sizeof buf - 1, 1, cmp, &reverse);
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if (strcmp (buf, "zyxwvuuttsrrqpoooonmlkjihhgfeeeeddcba") != 0)
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return 1;
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return 0;
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}
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