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annotate tests/test-qsort_r.c @ 17744:9c8d212db038

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qsort_r: new module, for GNU-style qsort_r This works even on FreeBSD, which has an incompatible qsort_r API. * MODULES.html.sh: Add it. * doc/glibc-functions/qsort_r.texi: It's now supported. * lib/qsort.c: New file, taken from glibc with minor changes inside "#ifndef _LIBC" and with an unnecessary "#include <alloca.h>" removed. * lib/qsort_r.c: New file, compiled only on FreeBSD. * lib/stdlib.in.h (qsort_r): Declare in the usual way. * m4/stdlib_h.m4 (gl_STDLIB_H_DEFAULTS): * modules/qsort_r, modules/qsort_r-tests: New files. * modules/stdlib (Makefile): Set up its defaults. * tests/test-qsort_r.c: New file.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 29 Aug 2014 13:00:16 -0700
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children ab58d4870664
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17744
9c8d212db038 qsort_r: new module, for GNU-style qsort_r
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1 /* Test qsort_r.
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2
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3 Copyright 2014 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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17
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18 /* Written by Paul Eggert. */
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19
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20 #include <config.h>
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21
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22 #include <stdlib.h>
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23 #include <string.h>
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24
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25 int
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26 cmp (void const *va, void const *vb, void *varg)
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27 {
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28 char const *a = va;
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29 char const *b = vb;
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30 int *arg = varg;
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31 return (*a < *b ? -1 : *a > *b) * *arg;
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32 }
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33
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34 int
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35 main (void)
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36 {
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37 char buf[] = "thequickbrownfoxjumpedoverthelazydogs";
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38 int forward = 1;
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39 int reverse = -1;
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40 qsort_r (buf, sizeof buf - 1, 1, cmp, &forward);
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41 if (strcmp (buf, "abcddeeeefghhijklmnoooopqrrsttuuvwxyz") != 0)
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42 return 1;
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43 qsort_r (buf, sizeof buf - 1, 1, cmp, &reverse);
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44 if (strcmp (buf, "zyxwvuuttsrrqpoooonmlkjihhgfeeeeddcba") != 0)
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45 return 1;
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46 return 0;
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47 }