*/
YAZ_EXPORT int yaz_strcasecmp(const char *s1, const char *s2);
+/** \brief strcmp, null may be passed
+ \param s1 first buffer or NULL
+ \param s2 second buffer or NULL
+ \retval 0 buffers are equal
+ \retval >0 a > b
+ \retval <0 a < b
+*/
+YAZ_EXPORT int yaz_strcmp_null(const char *s1, const char *s2);
YAZ_END_CDECL