bool fmt_takes_decimals (enum fmt_type) PURE_FUNCTION;
+int fmt_min_width (enum fmt_type, bool for_input) PURE_FUNCTION;
+int fmt_max_width (enum fmt_type, bool for_input) PURE_FUNCTION;
+int fmt_max_decimals (enum fmt_type, int width, bool for_input) PURE_FUNCTION;
int fmt_min_input_width (enum fmt_type) PURE_FUNCTION;
int fmt_max_input_width (enum fmt_type) PURE_FUNCTION;
int fmt_max_input_decimals (enum fmt_type, int width) PURE_FUNCTION;