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Direc­tory tex-archive/macros/latex/contrib/ifetex

LaTeX package 'ifetex'
Copyright (c) 2011 by Martin Scharrer <>
Code repository:

This small package provides the if-switch \ifetex which indicated whether
e-TeX is available or not.

The package can be loaded as LaTeX package using `\usepackage{ifetex}` or in
plainTeX using `\input ifetex`. In both cases it aborts silently if the \ifetex macro
is already defined.

The package currently test if \eTeXversion is defined as a primitive and
assumes e-TeX if so.


Name Size Date Notes
README 617 2011-12-15 14:48
ifetex.dtx 5980 2011-12-15 14:48
ifetex.ins 226 2011-12-15 14:48
ifetex.pdf 130510 2011-12-15 14:48

Down­load the con­tents of this pack­age in one zip archive (129.8k).

ife­tex – Pro­vides \ife­tex switch

The pack­age pro­vides the switch \ife­tex which in­di­cates whether e-TeX is avail­able or not.

The pack­age can be loaded as LaTeX pack­age us­ing \usep­a­ck­age{ife­tex} or in plain TeX us­ing \in­put ife­tex. In ei­ther case it aborts silently if the \ife­tex macro is al­ready de­fined.

The pack­age’s test is whether \ε-TeXver­sion is de­fined as a prim­i­tive; if it is, the pack­age as­sumes e-TeX fea­tures are avail­able.

Pack­age De­tailsife­tex
Li­censeThe LaTeX Project Public Li­cense 1.3
Copy­right2011 Martin Schar­rer
Main­tainerMartin Schar­rer
Con­tained inTeXlive as ife­tex
MikTeX as ife­tex
Topics ex­am­ine the TeX pro­gram­ming en­vi­ron­ment
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