Template/function libraries for measurement units.

I am wanting to format, and convert, some measurements (distances and
angles predominantly).
Eg 3.13 radians becomes {179d25'36.305"} or {S0d30'23.695"E}
Is anyone aware of a collection/library of functions/templates that I
could use for this reformatting.  It seems like something someone should
have done, and I don't want to "reinvent the wheel".
Also, I have searched the web looking for such a beast, without success.
Can some one suggest a site to me that list/indexes XSLT libraries?
thx

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list