Ron, http://www.linuxbase.org/spec/refspecs/LSB_1.2.0/gLSB/baselib.html has a thorough matching. http://www.linuxbase.org/spec/refspecs/LSB_1.2.0/gLSB/libm.html libm interfaces specifically. I offer this as suggestive information only. corey On Sat, 26 Feb 2005 10:45:27 +0800, Jonathan Wilson <jonwil@xxxxxxxxxxx> wrote: > Depends on what OS. > If its linux (or some other unix), the manpages for the function should > tell you. > If its something else (e.g. mac, windows, etc), I dont know. > But for all the math functions, use -lm > >