struct fmt_spec fmt_for_input (enum fmt_type, int w, int d) PURE_FUNCTION;
struct fmt_spec fmt_for_output (enum fmt_type, int w, int d) PURE_FUNCTION;
struct fmt_spec fmt_for_output_from_input (const struct fmt_spec *);
struct fmt_spec fmt_for_input (enum fmt_type, int w, int d) PURE_FUNCTION;
struct fmt_spec fmt_for_output (enum fmt_type, int w, int d) PURE_FUNCTION;
struct fmt_spec fmt_for_output_from_input (const struct fmt_spec *);