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Diffstat (limited to 'util.h')
| -rw-r--r-- | util.h | 43 |
1 files changed, 43 insertions, 0 deletions
@@ -0,0 +1,43 @@ +/* + * Copyright 2010 Francisco Jerez + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial + * portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __UTIL_H__ +#define __UTIL_H__ + +#define subm(a, b, m) (((a) % (m) + (m) - (b) % (m)) % (m)) + +#define lambda(x, y) \ + ({ \ + x __attribute__((__unused__)); \ + \ + auto typeof((y)) __f(x) { \ + return (y); \ + }; \ + \ + __f; \ + }) + +#endif |