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1 | /* pow2, Copyright (c) 2016 Dave Odell <dmo2118@gmail.com> |
2 | * | |
3 | * Permission to use, copy, modify, distribute, and sell this software and its | |
4 | * documentation for any purpose is hereby granted without fee, provided that | |
5 | * the above copyright notice appear in all copies and that both that | |
6 | * copyright notice and this permission notice appear in supporting | |
7 | * documentation. No representations are made about the suitability of this | |
8 | * software for any purpose. It is provided "as is" without express or | |
9 | * implied warranty. | |
10 | */ | |
11 | ||
12 | #ifndef POW2_H | |
13 | #define POW2_H | |
14 | ||
15 | #include <stdlib.h> | |
16 | ||
17 | extern int i_log2(size_t x); | |
18 | extern size_t to_pow2 (size_t x); /* return the next larger power of 2. */ | |
19 | ||
20 | #endif /* POW2_H */ |