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From: pepke@gw.scri.fsu.edu (Eric Pepke)
Newsgroups: comp.sys.mac.programmer
Subject: Re: THINKC 4.0.2 #define is short
Message-ID: <1398@sun13.scri.fsu.edu>
Date: 14 Nov 90 15:53:23 GMT
References: <2374@moscom.UUCP>
Sender: news@sun13.scri.fsu.edu
Organization: Florida State University, but I don't speak for them
Lines: 41

In article <2374@moscom.UUCP> tcm@moscom.UUCP (Tom Maszerowski) writes:
> I believe that this is because the preprocessor assumes that
> MaxAllocation is an int ( 16 bits ) but the result of the shift is
> 0x10000, which requires a long ( 32 bits ).

No, it depends on how you use it.  Preprocessing is textual.  Try this bit 
of code:

#define foo (1 << 16)
#define bar (1L << 16)

    long face, bork;
    printf("Foo = %ld\n", (long) foo);
    printf("Bar = %ld\n", (long) bar);
    face = foo;
    bork = bar;
    printf("Face = %ld\n", face);
    printf("Bork = %ld\n", bork);

It produces

Foo = 65536
Bar = 65536
Face = 0
Bork = 65536

> I realize that compiler
> implementers are free to make an int any size they want, but this is the
> first 68000 C compiler I've used where sizeof(int) != sizeof(long).

Whether this is "proper" or not is the subject of one of the loudest and 
least productive of the periodic flame wars that grace this newsgroup.  
It's like zen and Mount Everest: it's just there.  

Eric Pepke                                    INTERNET: pepke@gw.scri.fsu.edu
Supercomputer Computations Research Institute MFENET:   pepke@fsu
Florida State University                      SPAN:     scri::pepke
Tallahassee, FL 32306-4052                    BITNET:   pepke@fsu

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