This should within a day be at your local mirror.
Jim Hef{}feron Saint Michael's College
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The following information was provided by our fellow contributor:
Name of contribution: iftex Version number: 0.1 Author's name: Vafa Khalighi Location on CTAN: /macros/latex/contrib/iftex Summary description: Am I running under PDFTeX, or XeTeX, or LuaTeX? License type: lppl
Announcement text: ---------------------------------------------------------------------- This very simple package, for both Plain TeX and LaTeX, defines the ifPDFTeX, ifXeTeX, and ifLuaTeX boolean for testing whether PDFTeX, or XeTeX, or LuaTeX is being used for typesetting.
Also provides the RequirePDFTeX, RequireXeTeX, and RequireLuaTeX command which throws an error if PDFTeX, XeTeX and LuaTeX (respectively) is not the engine in use. ----------------------------------------------------------------------
This package is located at http://tug.ctan.org/tex-archive/macros/latex/contrib/iftex . More information is at http://tug.ctan.org/pkg/iftex (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .