LaTeX package 'ifetex' ~~~~~~~~~~~~~~~~~~~~~~ Copyright (c) 2011-2018 by Martin Scharrer CTAN: http://www.ctan.org/pkg/ifetex Code repository: https://bitbucket.org/martin_scharrer/ifetex Issue tracker: https://bitbucket.org/martin_scharrer/ifetex/issues 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.