Re: [Mingw-users] sizeof long

[Georg F. <fu...@is...>]

You can and must look in the file >>limits.h<<.

ISO C requires that implementations document the ranges of the integer types in
 the header file *limits.h.*"




Earnie Boyd wrote:
> 
> Joerg Bruehe wrote:
> >
> > Hi !
> >
> > Lloyd Dupont wrote:
> > >
> > > ok, if i well understand char, short, long have a size independant
> > > of thet processor
> > > whire are, respectively, 1, 2, 4.
> > > and int is the size of a register. 4 on 486 machine an even 8 on a
> > > 64 bits machine (so sinzeof(int) > sizeof(long) for such a machine)
> >
> > I do not know the exact location(s) in the C standard(s),
> > but I am quite sure this is wrong:
> >
> > On byte-addressable machines, "char" is 1 byte.
> >   (AFAIK, it is even defined that on _all_ machines
> >   sizeof ( char ) == 1  .)
> >
> 
> What is your definition of BYTE?
> AIUI, the standard (which I don't have a reference to either) guarantees
> that `sizeof(char) == 1' but doesn't guarantee that `sizeof(char) ==
> 8bits'.
> 
> AIUI, the standard says short <= int <= long <= long long <= next
> generation bit pattern.  Given this the bit length of short, int, long,
> long long, ... could all be the same length.
> 
> IMO, it would be beneficial for the standard to change to using int8,
> int16, int32, etc. so that it was obvious as to what is meant; but, that
> isn't likely to happen anytime soon.
> 
> Earnie.
> 
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-- 
Georg Fusz
Technische Universitaet Berlin, Germany


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