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On Fri, Sep 30, 2005 at 07:44:01AM +1000, Erik de Castro Lopo wrote:
> In addition, C is used for low level programming where the programmer
> needs to be able to address 32 bit hardware registers. If int was
> 64 bits, what would you use for accessing these registers.
^^^^^ (corrected)
You would use int. You would also use a function to access the
hardware register and the function would contain whatever CPU magic
is required to access the register.
The hard problem is when you have a 32 bit number inside a structure
and the structure is packed so you have to access exactly that
particular number with bothering anything on either side. Nothing to
do with hardware registers. The structure could be out of a file,
off the network, or read from any device. O'caml programmers obviously
don't spend much time thinking about binary compatibility of data
transfer to other machines.
Oh yeah, I remember... file I/O is not a "functional" concept.
- Tel
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