D-Programming-Language/phobos — pull request #610 by donc (2012-05-29 07:40:12+00:00)
Title: Remove deprecated tgamma and erfc from math

Improved versions have been in std.mathspecial for 1.5 years (with identical semantics).

Very few people use these functions, and of those that do, there have been complaints about the deprecated ones -- they cause ambiguity errors. It is *not* harmless to keep them.