D-Programming-Language/druntime — pull request #863 by jmdavis (2014-07-04 21:45:48+00:00)
Title: Add c_long_double for interacting with C code.

Based on a recent newsgroup discussion, I think that it's clear that we
need an alias for C's long double, so here it is. I think that I got it
right for x86, and x86_64, but I have no idea what it should be for
other platforms.