Re: Argument typing in Compile
- To: mathgroup at smc.vnet.net
- Subject: [mg9398] Re: Argument typing in Compile
- From: seanross at worldnet.att.net
- Date: Sun, 2 Nov 1997 01:02:27 -0500
- Sender: owner-wri-mathgroup at wolfram.com
Xah wrote: > > At 12:34 AM -0800 1997.11.01, Sean Ross wrote: > >Does anyone know of a way to define a symbol that will execute one bit > >of compiled code for certain types of arguments and another bit of > >compiled code for other arguments without resorting to an explicit If > >or Case structure? > > Hi Sean, > > You could use the same technique to define functions that uses Compile. > > f[x_Integer]=Compile[...]; > f[x_Real]=Compile[...]; Thanks for the response. As reasonable a suggestion as that is, Unfortunately, my version of mathematica(3.0.1) doesn't agree with your logic. The code: f[x_Real]=Compile[{x},x^2] does not EVER return a number no matter what the argument of f is. It only returns a compiled function object with the argument in place of the x. That is why I wrote in asking how to do it. Could you please send a working sample of the code that you are referring to-one that actually returns a real number. > The commands Set and SetDelayed are permament versions of Rule and RuleDelayed. > (with the condition that Rule and RuleDelayed needs to be used in conjunction with Replace or similar commands) > Could you elaborate on this statement, perhaps showing an example of what you mean or how it relates to compiled function objects?