UnitStep Argument

*To*: mathgroup at christensen.cybernetics.net*Subject*: [mg628] UnitStep Argument*From*: "Roger M. Jones" <rmj at LLEWELYN.SLAC.STANFORD.EDU>*Date*: Sat, 01 Apr 1995 14:00:08 -0800

How can I define UnitStep[-x], so that the answer is zero (.i.e. assign x as being a positive number). Defining: x/:Positive[x]=True doesn't work. Many thanks. --- Regards, Roger (rmj at llewelyn.slac.stanford.edu)