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51 lines
1.3 KiB
51 lines
1.3 KiB
/* |
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* util.h |
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* |
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* Created on: Feb 26, 2023 |
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* Author: Daniel Peter Chokola |
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*/ |
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#ifndef UTIL_H_ |
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#define UTIL_H_ |
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/* Definitions */ |
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#ifdef __GNUC__ |
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# define UNUSED __attribute__((unused)) |
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#else |
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# define UNUSED |
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#endif |
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#define return_if_fail(cond) \ |
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if(!(cond)) { return; } |
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#define return_val_if_fail(cond, val) \ |
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if(!(cond)) { return (val); } |
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#define return_null_if_fail(cond) return_val_if_fail((cond), NULL) |
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/* MIN() and MAX() */ |
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#ifdef __GNUC__ |
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# if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9)) |
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/* prevent double evaluation */ |
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# define MIN(a,b) \ |
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__extension__({ __auto_type _a = (a); \ |
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__auto_type _b = (b); \ |
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_a < _b ? _a : _b; }) |
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# define MAX(a,b) \ |
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__extension__({ __auto_type _a = (a); \ |
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__auto_type _b = (b); \ |
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_a > _b ? _a : _b; }) |
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# else |
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/* typesafety but double evaluation is possible */ |
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# define MIN(a,b) \ |
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__extension__({ __typeof__ (a) _a = (a); \ |
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__typeof__ (b) _b = (b); \ |
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_a < _b ? _a : _b; }) |
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# define MAX(a,b) \ |
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__extension__({ __typeof__ (a) _a = (a); \ |
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__typeof__ (b) _b = (b); \ |
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_a > _b ? _a : _b; }) |
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# endif |
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#else |
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/* no typesafety and double evaluation is possible */ |
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# define MIN(a,b) ((a) < (b) ? (a) : (b)) |
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# define MAX(a,b) ((a) > (b) ? (a) : (b)) |
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#endif |
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#endif /* UTIL_H_ */
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