1. Martin Scharrer
  2. ifetex


LaTeX package 'ifetex'
Copyright (c) 2011-2016 by Martin Scharrer <martin@scharrer.me>
WWW: http://latex.scharrer.me/
CTAN: http://www.ctan.org/pkg/ifetex
Code repository: https://bitbucket.org/martin_scharrer/ifetex

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.