Re: Function definition

*To*: mathgroup at smc.vnet.net*Subject*: [mg18216] Re: Function definition*From*: Guilherme Roschke <gr at network3.entropy.upenn.edu>*Date*: Tue, 22 Jun 1999 20:41:11 -0400*Organization*: University of Pennsylvania*References*: <7kmtmi$230@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Jesus Perez Ortega wrote: > > Hi All, > How can I restrict a variable to be Real in the function definition? > Regards > -- > Jesus Perez Ortega > jesper at bqto.unexpo.edu.ve say your function is foo[x_]:=x/2; define instead foo[x_Real]:=x/2; this way the pattern x will only match a real number. ************************************************* Guilherme Roschke * Programmer * Dept. of Anesthesia * University of Pennsylvania Medical School * gr at network3.entropy.upenn.edu * *************************************************