standards/56906: Several math(3) functions fail to set errno on a domain error

[David Schultz]

Synopsis: Several math(3) functions fail to set errno on a domain error

State-Changed-From-To: open->closed
State-Changed-By: das
State-Changed-When: Sun Jan 16 07:01:24 GMT 2005
State-Changed-Why: 
I believe all of the issues raised in this PR's audit log have been
addressed, except the one about optional support for errno in libm.
I think it's a bad idea, but Stefan is a committer now, so he can
add it himself if he wishes to.  :-P

Reminded about this by:	bde

http://www.freebsd.org/cgi/query-pr.cgi?pr=56906