Character Type Definition

[cis.ohio-state.edu!udecc.engr.udayton.edu!blackbird.afit.af.mil!galaxy.af]

I am new to Ada and have been trying to find out how to do the following.
I would like to define a character type of disjoint ASCII characters so I
can perform a membership test.  For instance, 

subtype Math_Operators is character ('^','*','/','+','-'); -- syntax??

I am able to define the type but cannot do a membership test such as,

if My_Operator in Math_Operators then ...

This gives me an invalid comparison since they are not of the same type.
Is there a way to do the above (a case statement will work of course).
Any help would be appreciated.  Thanks in advance.


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Rusty Baldwin **Your impressive title here**   rbaldwin@blackbird.afit.af.mil

Air Force Institute of Technology              Tel: (513)255-8989
AFIT/EN046
Wright-Patterson AFB, Ohio  45433
USA

Computers are useless.  They can only give you answers.  - Pablo Picasso
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