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53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
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/*
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* util.h - Common utility functions
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*
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* Written 2016 by Werner Almesberger
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* Copyright 2016 Werner Almesberger
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*
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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 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef UTIL_H
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#define UTIL_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define alloc_size(s) \
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({ void *alloc_size_tmp = malloc(s); \
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if (!alloc_size_tmp) { \
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perror("malloc"); \
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exit(1); \
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} \
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alloc_size_tmp; })
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#define alloc_type(t) ((t *) alloc_size(sizeof(t)))
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#define stralloc(s) \
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({ char *stralloc_tmp = strdup(s); \
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if (!stralloc_tmp) { \
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perror("strdup"); \
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exit(1); \
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} \
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stralloc_tmp; })
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#define ARRAY_ELEMENTS(a) (sizeof(a) / sizeof(a[0]))
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#define ARRAY_END(a) ((a) + ARRAY_ELEMENTS(a))
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#define swap(a, b) \
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({ typeof(a) _tmp = (a); a = (b); b = _tmp; })
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#define unsupported(s) \
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fprintf(stderr, __FILE__ ":%d: unsupported: " s "\n", __LINE__)
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#endif /* !UTIL_H */
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