diff options
Diffstat (limited to 'include/string.h')
| -rw-r--r-- | include/string.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h index 0a41899..604fe1a 100644 --- a/include/string.h +++ b/include/string.h @@ -116,6 +116,7 @@ char* __gnu_strerror_r(int, char*, size_t); /* GNU-specific strerror_r */ #endif + /** * Returns the number of bytes in a NUL-terminated * string. This excludes the NUL byte. @@ -705,5 +706,48 @@ void* memdup(const void*, size_t) +/** + * Compare two memory segments alphabetically in a case sensitive manner. + * + * @param a A negetive value is returned if this is the lesser. + * @param b A positive value is returned if this is the lesser. + * @param size The size of the segments. + * @return Zero is returned if `a` and `b` are equal, otherwise, + * see the specifications for `a` and `b`. + */ +int memcmp(const void*, const void*, size_t) + __GCC_ONLY(__attribute__((warn_unused_result))); + +/** + * Compare two strings alphabetically in a case sensitive manner. + * + * @param a A negetive value is returned if this is the lesser. + * @param b A positive value is returned if this is the lesser. + * @return Zero is returned if `a` and `b` are equal, otherwise, + * see the specifications for `a` and `b`. + */ +int strcmp(const char*, const char*) + __GCC_ONLY(__attribute__((warn_unused_result, nonnull))); + +/** + * Compare two strings alphabetically in a case sensitive manner. + * + * @param a A negetive value is returned if this is the lesser. + * @param b A positive value is returned if this is the lesser. + * @param length The maximum number of characters to compare. + * @return Zero is returned if `a` and `b` are equal, otherwise, + * see the specifications for `a` and `b`. + */ +int strncmp(const char*, const char*, size_t) + __GCC_ONLY(__attribute__((warn_unused_result, nonnull))); + + +#if defined(_GNU_SOURCE) && !defined(__PORTABLE) +int strverscmp(const char*, const char*) + __GCC_ONLY(__attribute__((warn_unused_result, nonnull))); /* TODO document and implement strverscmp */ +#end if + + + #endif |