-void log_init(int level, const char *prefix, const char *name);
-void logf(int level, const char *fmt, ...);
-int log_mask_str (const char *str);
-FILE *log_file(void);
+void MDF log_init(int level, const char *prefix, const char *name);
+void MDF logf(int level, const char *fmt, ...);
+int MDF log_mask_str (const char *str);
+FILE MDF *log_file(void);