diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/strings.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/strings.h b/include/strings.h index 224c9a4..7a02d1e 100644 --- a/include/strings.h +++ b/include/strings.h @@ -145,6 +145,34 @@ char* rindex(const char*, int) __GCC_ONLY(__attribute__((warn_unused_result, nonnull, pure))); +/** + * Find the first set bit in an integer. + * + * @param i The integer + * @return The value of the least significant set bit, zero if none. + */ +int ffs(int) + __GCC_ONLY(__attribute__((warn_unused_result, const))); + +/** + * Find the first set bit in an integer. + * + * @param i The integer + * @return The value of the least significant set bit, zero if none. + */ +int ffsl(long) + __GCC_ONLY(__attribute__((warn_unused_result, const))); + +/** + * Find the first set bit in an integer. + * + * @param i The integer + * @return The value of the least significant set bit, zero if none. + */ +int ffsll(long long) + __GCC_ONLY(__attribute__((warn_unused_result, const))); + + #endif |