Comprehensive TeX Archive Network

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.

Li­censeThe LaTeX Project Public Li­cense 1.3
Main­tainerMartin Schar­rer
TDS archiveifetex.tds.zip
Con­tained inTeX Live as ife­tex
MiKTeX as ife­tex
Topics ex­am­ine the TeX pro­gram­ming en­vi­ron­ment

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