+
+/* Adjusts FMT's width and decimal places to be valid for an
+ input format (if FOR_INPUT) or an output format (if
+ !FOR_INPUT). */
+void
+fmt_fix (struct fmt_spec *fmt, bool for_input)
+{
+ unsigned int step;
+ int min_w, max_w;
+ int max_d;
+
+ /* Clamp width to those allowed by format. */
+ min_w = fmt_min_width (fmt->type, for_input);
+ max_w = fmt_max_width (fmt->type, for_input);
+ if (fmt->w < min_w)
+ fmt->w = min_w;
+ else if (fmt->w > max_w)
+ fmt->w = max_w;
+
+ /* Round width to step. */
+ step = fmt_step_width (fmt->type);
+ fmt->w = ROUND_DOWN (fmt->w, step);
+
+ /* If FMT has more decimal places than allowed, attempt to increase FMT's
+ width until that number of decimal places can be achieved. */
+ if (fmt->d > fmt_max_decimals (fmt->type, fmt->w, for_input)
+ && fmt_takes_decimals (fmt->type))
+ {
+ int max_w = fmt_max_width (fmt->type, for_input);
+ for (; fmt->w < max_w; fmt->w++)
+ if (fmt->d <= fmt_max_decimals (fmt->type, fmt->w, for_input))
+ break;
+ }
+
+ /* Clamp decimals to those allowed by format and width. */
+ max_d = fmt_max_decimals (fmt->type, fmt->w, for_input);
+ if (fmt->d < 0)
+ fmt->d = 0;
+ else if (fmt->d > max_d)
+ fmt->d = max_d;
+}
+
+/* Adjusts FMT's width and decimal places to be valid for an
+ input format. */
+void
+fmt_fix_input (struct fmt_spec *fmt)
+{
+ fmt_fix (fmt, true);
+}
+
+/* Adjusts FMT's width and decimal places to be valid for an
+ output format. */
+void
+fmt_fix_output (struct fmt_spec *fmt)
+{
+ fmt_fix (fmt, false);
+}