ANSI C & Fortran 8x - Expand cpp to partially support generalized precision

[terry]

In article <4804 at sigi.Colorado.EDU>, swarbric at tramp.Colorado.EDU (Frank Swarbrick) writes:
> I don't know if you'd take this into concideration, but Turbo C already
> uses __int__() for a general interrupt.
> (i.e. #define geninterrupt(i) __int__(i)  I have no idea why they have
> this, but they do.)

The response above was to an article suggesting __int__(999999) yeild the
smallest integer/char/long/etc. data type that could contain the value 999999,
and similar tricks, thus allowing you to declare only what you need to declare.

Not to be rude, but I don't think an interrupt routine on a severly localized
product based 1) on IBM DOS BIOS architecture, and 2) on 8086/80x86 calling
conventions based on register push order _should_ be considered.

The __int__(i) function is peculiar to Turbo C, which can not be demonstrated
to be K&R compatable as far as the book "The C Programming Language" has
defined pre-initialization of declared (non-external) global variables not
explicitly set to a value to have a value of 0.  Turbo C does not do this.
Neither does it correctly treat local non-initialized static variables.  It
is arguably not C. (I'll argue more, if you want :-}).

The function you talk about came as a result of the IBM-PC interrupt calling
sequence not being the same as the "normal" oprcedure calling sequence...
ie: PUSHing/POPing of registers on function entry/exit.  It is NOT standard
to any other C, and while it lets you do nifty things on DOS, such as
memory resident pink-pad replacements, it doesn't do a thing for UNIX/VMS
systems, which already have a standard method of catching catchable interrupts
called 'signal()'.  You can generate interrupts, too.

Nope, I think we can safley ignore Turbo C when considering standardization of
C across machines.

PS: Personally, I support the __<your_type_here>__(<sized object>) declarative
...it's pretty useless unless you are on a memory-limited machine, since you
might as well make it huge elsewhere if you can't remember what it should be.


| Terry Lambert           UUCP: ...{ decvax, ihnp4 }                          |
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