References for \dimexpr \numexpr

Question

I'm not really sure whether this is the right place to ask this question, but here I go....

Over the holiday I've been taking time to read through a lot of the Q&A here. I've been running across some TeX code (or maybe LaTeX code) that I cannot find either in source2e doc or Knuth's The TeXbook. Where can I find documentation that explains \dimexpr and \numexpr and their syntax?

Somewhat special case of macros - Where do I find out how a command/environment is defined? - TeX - LaTeX Stack Exchange. -- (side note, for this one e-TeX manual is quite dense in general, so maybe see also units - Simple explanations for \dimexpr and dimensions in general - TeX - LaTeX Stack Exchange) — user202729, Jul 27 '22 at 02:54

score 38 · Accepted Answer · answered Dec 27 '12 at 21:26

38

These are primitives which are not present in Knuth's TeX but which were added as part of the e-TeX extensions. As such, they are documented in the e-TeX manual, which is most conveniently accessed using texdoc etex.

answered Dec 27 '12 at 21:26

Joseph Wright

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References for \dimexpr \numexpr

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