Path: utzoo!attcan!uunet!mcsun!sunic!draken!d88-jwa
From: d88-jwa@nada.kth.se (Jon Watte)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Re: dead code, brain dead lilbrary
Message-ID: <2977@draken.nada.kth.se>
Date: 19 Feb 90 14:09:03 GMT
References: <1990Feb14.204332.24800@caen.engin.umich.edu> <20062@bellcore.bellcore.com> <10294@hoptoad.uucp> <2971@draken.nada.kth.se> <166.25e0277b@waikato.ac.nz>
Reply-To: d88-jwa@nada.kth.se (Jon W{tte)
Organization: Royal Institute of Technology, Stockholm, Sweden
Lines: 34

In article <166.25e0277b@waikato.ac.nz> ccc_ldo@waikato.ac.nz writes:
>In article <2971@draken.nada.kth.se>, d88-jwa@nada.kth.se (Jon Watte)
>>In article <10294@hoptoad.uucp> tim@hoptoad.UUCP (Tim Maroney) writes:

>>>The proper way to write atoi on the Macintosh is:
>>>int atoi(StringPtr s) { long i; StringToNum(s, &i); return i; }
>> ~~~                     ~~~~                        ~~~~~~~~

>>Any sane compiler would complain. If you reurn a long, the

I meant should. English is not my native language.

>>function should be declared long. If you use int, you're wide
>>open for all kinds of incompatibilities. Int is intended only

>The compiler converts the type of the "return" expression to
>match the type returned by the function. Try changing the type
>of the above "atoi" function from "int" to "short", and have a
>look at the generated code, to see what I mean.

Try changing half of the longs you use to shorts, randomly,
and see how long your program copes. One minute ? Two minutes ?

assigning a long to an inte is _never_ a good practise -
and in this case, it happens to work on MPW C 3 but not earlier
or other Mac compilers. (Work == give the desired effect)

In general, one should never use ints other than as small
indicies in loops... Anyone think of another use for ints ?

h+
-- 
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