CheckForSigned is misnamed

[Elliotte Harold]

The @CheckForSigned annotation is misnamed. According to the comments, it is

Used to annotate a value that may be negative; uses of it should check
for negative values before using it in a way that requires the value to
be nonnegative

Clearly the name shoudl be @CheckForNegative, not @CheckForSigned.
Alternately, if it really is a sign check, then the comment needs to be
improved.

--
Elliotte Rusty Harold elh...@metalab.unc.edu
Refactoring HTML Just Published!
http://www.amazon.com/exec/obidos/ISBN=0321503635/ref=nosim/cafeaulaitA

[Bill Pugh]

The way the type qualifiers and when attributes work, it really means
that the element labeled will contain both elements in the set
Nonnegative and elements in the complement of Nonnegative.

So the annotation name is correct, I'll fix the documentation.

Bill