Re: [GD-General] meaning of sizeof(int) on all plateform

[J C L. <cl...@ka...>]

On Thu, 26 Jun 2003 15:12:48 -0700 
Chris Jones <Jones> wrote:

> This is all the standard has to say on the size of ints: "There are
> four signed integer types: "signed char", "short int", "int", and
> "long int." In this list, each type provides at least as much storage
> as those preceding it in the list. Plain ints have the natural size
> suggested by the architecture of the execution environment (1); the
> other signed integer types are provided to meet special needs."

Precisely.  This is why on Crays there's a compilation environment
where:

  sizeof(char) == sizeof(short) == sizeof(int) == sizeof(long)
  == sizeof(void*) == 1

Note also that ANSI doesn't require bytes to be 8bits.  In the above
case bytes are 64bits.

> In other words, the result of sizeof(int) is never guaranteed to be of
> a certain size.  Although I believe the ISO C99 standard added new
> header file, stdint.h, which declares some typedefs for specific sized
> integer types.  If only more compilers would follow the standards...

Yeah.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
cl...@ka...               He lived as a devil, eh?		  
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.