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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: C Integers -> Booleans: shortcut?
Date: 28 Sep 2003 18:15:26 +0100
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Date: 2003-09-28T18:15:26+01:00
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chris <spamoff.danx@ntlworld.com> writes:

> Can you (in general) import a function taking/returning a C integer
> and treat it like a boolean for import?  Let the compiler deal with
> the difference?

With GNAT you would say

  type C_Boolean is new Boolean;
  pragma Convention (C, C_Boolean);

with the meaning that 0 => False, anything else => True.

For other compilers I would think you'd be better off specifying
Interfaces.C.int and comparing to 0.