bool str_to_ulong(const char *, int base, unsigned long *);
bool str_to_ullong(const char *, int base, unsigned long long *);
+bool str_to_double(const char *, double *);
+
+int hexit_value(int c);
+
+char *dir_name(const char *file_name);
+
#ifdef __cplusplus
}
#endif