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Re:The ugliest C feature: <tgmath.h> by CGamesPlay on Monday December 26, 2011 @11:40AM (#3393219)
Keep in mind that "the ugliest C feature" was committed in 2000, and the article was written in 2005. Things were a mite different in 2000, so this was probably more necessary.

Even if this isn't necessary today, it's a pretty interesting brain exercise.

Re:The ugliest C feature: <tgmath.h> by kzrdude on Monday December 26, 2011 @07:03PM (#3394271)
glibc still includes similar code. (There are type-switch builtin functions in gcc that could have replaced it).