We can already set specific bits with a single operator so i think it would be a nice feature to be able to clear them with a single operator. Eg somthing like...

val = val  !!  7;

would be much clearer than either of...

val = (val | 7) ^ 7;
val = val & (!7);

I am not even sure !7 actualy be converted to the correct bit mask anyway? Is the compiler smart enough to make the bitmask the same width as the variable? At least it does not seem obvious what width the !7 should be.

With a bit clear operator it is explicit what width the bitmask should be.

And it may be of benefit for processors (like the StrongArm) that have a bit clear instruction. Mabey even x86 will some day.

cheers,

chris

<snip>
>We can already set specific bits with a single operator so i think it would be a nice feature to be able to clear them with a single operator. Eg somthing
</snip>

Oh no, not more operators!

Have you read up on Intrinsic Functions?


Were it not for those I'd suggest adding member functions int.BitTest(int),
int.BitSet(int), and int.BitClear(int) -- but they would make it difficult to
mimic  x = y op z

From: "chris" <news@flak.clara.co.uk>

> We can already set specific bits with a single operator so i think it
would be a
> nice feature to be able to clear them with a single operator. Eg somthing like...

val &= ~7;

"Vathix" <vathix@dprogramming.com> wrote in message news:c6cgp3$2qlt$1@digitaldaemon.com...
> From: "chris" <news@flak.clara.co.uk>
>
> > We can already set specific bits with a single operator so i think it
> would be a
> > nice feature to be able to clear them with a single operator. Eg somthing like...
>
> val &= ~7;

what does "~" do? It is listed under "Add Expresions" but i still dont follow what it does.

cheers,

chris

chris wrote:
> 
> what does "~" do? It is listed under "Add Expresions" but i still dont follow
> what it does.

Array concatenation (and thus also string concatenation).

Lars Ivar

"Juan C" <Juan_member@pathlink.com> wrote in message news:c6cgog$2qlh$1@digitaldaemon.com...
> <snip>
> >We can already set specific bits with a single operator so i think it would
be a
> >nice feature to be able to clear them with a single operator. Eg somthing
> </snip>
>
> Oh no, not more operators!
>
> Have you read up on Intrinsic Functions?

I didnt know about those but from the docs it seems the only functions are for setting / clearing single bits by index.

cheers,

chris

"Lars Ivar Igesund" <larsivar@igesund.net> wrote in message news:c6dm4f$281$1@digitaldaemon.com...
> chris wrote:
> >
> > what does "~" do? It is listed under "Add Expresions" but i still dont
follow
> > what it does.
>
> Array concatenation (and thus also string concatenation).

i am confused.... so what does his example do? Ie...

val &= ~7;

chris

"chris" <news@flak.clara.co.uk> wrote:

> i am confused.... so what does his example do? Ie...
> 
> val &= ~7;

When used as a unary operator, '~' is bit-wise NOT, whereas '!' is a unary logical NOT.  Same as in C and C++.


-- 
dave

"Dave Sieber" <dsieber@spamnot.sbcglobal.net> wrote in message news:Xns94D53C42924D8dsiebersbc@63.105.9.61...
> "chris" <news@flak.clara.co.uk> wrote:
>
> > i am confused.... so what does his example do? Ie...
> >
> > val &= ~7;
>
> When used as a unary operator, '~' is bit-wise NOT, whereas '!' is a unary logical NOT.  Same as in C and C++.

ah, makes sense now. Cheers.

It is not listed in the "Bitwise Epresions" docs btw.

chris

~ is unary bitwise not

"chris" <news@flak.clara.co.uk> wrote in message news:c6dltq$254$1@digitaldaemon.com...
>
> "Vathix" <vathix@dprogramming.com> wrote in message news:c6cgp3$2qlt$1@digitaldaemon.com...
> > From: "chris" <news@flak.clara.co.uk>
> >
> > > We can already set specific bits with a single operator so i think it
> > would be a
> > > nice feature to be able to clear them with a single operator. Eg somthing like...
> >
> > val &= ~7;
>
> what does "~" do? It is listed under "Add Expresions" but i still dont follow what it does.
>
> cheers,
>
> chris
>
>