[phobos] Purity of C Math Functions

[Jonathan M Davis]

On Sunday 05 December 2010 08:55:54 David Simcha wrote:
> I'm trying to test out Brad's 64 work and I can't compile Phobos because
> in 64 mode std.math calls some C math functions declared in druntime w/o
> purity, safety, etc. tags.  I now remember that this was one of the few
> areas I meant to come back to when I was cleaning up 64 support in
> Phobos, but I forgot about it.  Is it safe to assume that C
> core.stdc.math functions are @safe pure nothrow?

Shouldn't _all_ C function be considered nothrow? C doesn't have exceptions, so 
C functions can't possibly throw.

- Jonathan M Davis