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MathGroup Archive 1997

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Re: Integer

  • To: mathgroup at smc.vnet.net
  • Subject: [mg6444] Re: [mg6435] Integer
  • From: seanross at worldnet.att.net
  • Date: Fri, 21 Mar 1997 22:59:39 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

A.G.Karavayev wrote:
> 
> Hi!
> Does anyone know how to
> set that the variable n  is an Integer or Real number?
> 
> Thank you in advance!
> 
> Yours,
> A.G.Karavayev,
> karavayev at phtd.tpu.edu.ru


If it is just a local or global variable, 

Head[symbol]=Integer;
Head[symbol]=Real;  

If it is a function argument and you want to restrict input

f[symbol_Integer]:=blah blahh blah
f[symbol_Real]:=etc. etc. etc.


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