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| -rw-r--r-- | lib/util/tsort.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/util/tsort.h b/lib/util/tsort.h new file mode 100644 index 0000000000..236b369912 --- /dev/null +++ b/lib/util/tsort.h @@ -0,0 +1,38 @@ +/* + Unix SMB/CIFS implementation. + + typesafe qsort + + Copyright (C) Andrew Tridgell 2010 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef _TSORT_H +#define _TSORT_H +#include <assert.h> + +/* + a wrapper around qsort() that ensures the comparison function is + type safe. + */ +#define TYPESAFE_QSORT(base, numel, comparison) \ +do { \ + if (numel > 1) { \ + qsort(base, numel, sizeof((base)[0]), QSORT_CAST comparison); \ + assert(comparison(&((base)[0]), &((base)[1])) <= 0); \ + } \ +} while (0) + +#endif |