On Tue, Jan 28, 2020 at 05:43:36PM +0100, Pablo Rodriguez wrote:
I’m afraid this is the second time I’m aware of the existence of \ifdim (the first time was when reading previous message from Taco 😅).
It’s a TeX primitive. From the TeXbook, chapter 20: * \ifdim<dimen1><relation><dimen2> (compares two dimensions) This is like \ifnum, but it compares two <dimen> values. For example, to test whether the value of \hsize exceeds 100pt, you can say ‘\ifdim\hsize>100pt’. The definition of \ifnum, right above it, states: * \ifnum<number1><relation><number2> (compares two integers) The <relation> must be either ‘<’ or ‘=’ or ‘>’. The two integer numbers are compared to each other in the usual way, and the result is true or false accordingly. Best, Arthur