pango:font-metrics-approximate-digit-width (metrics)

metrics -- a pango:font-metrics instance

The integer with the digit width, in Pango units.

Gets the approximate digit width for a font metrics instance. This is merely a representative value useful, for example, for determining the initial size for a window. Actual digits in text can be wider or narrower than this, though this value is generally somewhat more accurate than the result of the pango:font-metrics-approximate-char-width function for digits.