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Groups > comp.lang.c > #16410

Re: typecast function pointer

From Ian Collins <ian-news@hotmail.com>
Newsgroups comp.lang.c
Subject Re: typecast function pointer
Date 2012-01-30 10:56 +1300
Message-ID <9oltjgFcosU1@mid.individual.net> (permalink)
References <jg0sdr$b96$1@speranza.aioe.org> <jg0ui5$o9l$1@dont-email.me> <jg4epn$se9$1@speranza.aioe.org>

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On 01/30/12 10:47 AM, Mark wrote:
> "Eric Sosman"<esosman@ieee-dot-org.invalid>  wrote in message
> news:jg0ui5$o9l$1@dont-email.me...
>>      No, because `int' and `s_int32_t' are *not* different types.
>> A typedef declaration does not create a new type; it just creates
>> an additional name for an existing type.  Also, `signed int' and
>> `int' are not different types, but just two different ways to
>> name the same type.  All of `s_int32_t', `signed int', and `int'
>> are different ways of naming one type, and all three aliases can
>> be used interchangeably.[*],[**]
>
> Thanks for comprehensive answers!
>
> What can be the reason to declare a function returning 'signed int' instead
> of 'int' if those are all the same types? IMHO it only brings in confusion,
> as in my case.

There aren't any really.  Maybe the original authour was trying to look 
smart?

-- 
Ian Collins

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Thread

typecast function pointer "Mark" <mark_cruzNOTFORSPAM@hotmail.com> - 2012-01-28 08:15 -0500
  Re: typecast function pointer Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-01-28 08:52 -0500
    Re: typecast function pointer "Mark" <mark_cruzNOTFORSPAM@hotmail.com> - 2012-01-29 16:47 -0500
      Re: typecast function pointer Ian Collins <ian-news@hotmail.com> - 2012-01-30 10:56 +1300
      Re: typecast function pointer Keith Thompson <kst-u@mib.org> - 2012-01-29 14:27 -0800
        Re: typecast function pointer Ike Naar <ike@iceland.freeshell.org> - 2012-01-30 00:14 +0000
          Re: typecast function pointer Keith Thompson <kst-u@mib.org> - 2012-01-29 21:05 -0800
      Re: typecast function pointer Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-01-29 18:07 -0500
        Re: typecast function pointer Keith Thompson <kst-u@mib.org> - 2012-01-29 21:06 -0800
  Re: typecast function pointer Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-28 14:08 +0000

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