[PROPOSAL] Disallow // and \\ in Slang code (was: Re: Squeak
archeology - quo vs. //)
Bert Freudenberg
bert at impara.de
Wed Apr 7 09:40:55 UTC 2004
Am 06.04.2004 um 22:29 schrieb Ian Piumarta:
>
> C99 requires the division and modulus operators to truncate towards
> zero (consistent with Fortran). Since C99 is already here, you
> _should_ count on it.
How about we disallow // and \\ in the Slang translator to make sure
that anyone using it is aware of the differing semantics? We would
introduce #div: and #mod: generating explicit code rounding towards
negative infinity and use #quo: and #rem: to get the C99 meaning. The
error message when translating code with // or \\ should explain the
difference, and point out that in most cases one will want to use #quo:
or #rem:.
What this buys us is that we can rely on the simulator doing the same
as the Smalltalk code. Which is important, IMHO.
- Bert -
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