Tucker,
I detect sarcasm in your reply, but maybe I'm just being paranoid now...
R4RS Scheme:
"For integers n1 and n2 with n2 not equal to 0,
(= n1 (+ (* n2 (quotient n1 n2)) (remainder n1 n2)))"
E262-3 (the % operator):
"In the remaining cases, where neither an infinity, nor a zero, nor
NaN is involved, the floating-point remainder r from a dividend n and
a divisor d is defined by the mathematical relation r = n − (d * q)
where q is an integer that is negative only if n/d is negative and
positive only if n/d is positive, and whose magnitude is as large as
possible without exceeding the magnitude of the true mathematical
quotient of n and d."
Div truncates and the definition is machine independent and
complements that of %.
Since / rounds (among other operators) but there is no way to control
its rounding mode, I don't know why 'div' should have that control
either, necessarily.
--lars
On 3/6/08, P T Withington <[EMAIL PROTECTED]> wrote:
> Don't you want to be able to express rounding mode? And if so, do you
> need 4 operators? floor/, ceiling/, round/, truncate/? Oh, maybe they
> should be named /-, /+, /~ and /0. Yow.
>
> Is div truncate/, or round/? I can never remember.
>
>
> On 2008-03-05, at 18:18 EST, Lars Hansen wrote:
>
> > Just \ would work if we're happy with not allowing its use at the
> > end of
> > a line. A little dodgy, syntactically, IMO. I've advocated "\\" in
> > the
> > past, which by normal lexing rules would be unambiguous by the
> > longest-token lexing rule.
> >
> > ("/." is ambiguous, consider 3/.5.)
> >
> > --lars
> >
> >
> > ________________________________
> >
> > From: Michael O'Brien [mailto:[EMAIL PROTECTED]
> > Sent: 5. mars 2008 15:06
> > To: Lars Hansen
> > Cc: TNO; [email protected]
> > Subject: Re: New Operator
> >
> >
> > I'll vote for that also. It improves readability quite a bit.
> >
> > But is there a better operator than "\"?
> >
> > Shame "//" is taken. What about "/."
> >
> > Michael
> >
> > Lars Hansen wrote:
> >
> > I have been pushing for this in the past on several
> > occasions, but enthusiasm in the WG has been scant, unfortunately.
> > Maybe I haven't been pushing hard enough.
> >
> > --lars
> >
> >
> > ________________________________
> >
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of TNO
> > Sent: 5. mars 2008 14:13
> > To: [email protected]
> > Subject: New Operator
> >
> >
> > Is it too late to propose an integer division
> > operator into the spec? I do quite a bit of WSH programming in both
> > VBScript an JScript and sometimes its a bit of an irritant during a
> > translation, it would be nice to see this operator "\" available in
> > the
> > new ECMAScript instead of having to rely on more inefficient
> > workarounds:
> >
> > VBScript:
> >
> > Dim result
> > result = 19 \ 4 '(result = 4)
> >
> > JScript:
> >
> > http://www.codingforums.com/showthread.php?t=58799
> >
> >
> > ________________________________
> >
> >
> > _______________________________________________
> > Es4-discuss mailing list
> > [email protected]
> > https://mail.mozilla.org/listinfo/es4-discuss
> >
> >
> > _______________________________________________
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>
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