Sorry. is it possible to get the previous number using bitwise operator and
with out using arithematic operator
On Tue, Jun 29, 2010 at 1:56 PM, Dave <dave_and_da...@juno.com> wrote:
> Are you asking how to subtract 1 without using bitwise operators? If
> so, just use subtraction.
>
> Dave
>
> On Jun 29, 10:32 am, Anand <anandut2...@gmail.com> wrote:
> > @ Dave: is it possible to get the previous without using bitwise
> operator.
> >
> >
> >
> > On Mon, Jun 28, 2010 at 8:29 PM, Gene <gene.ress...@gmail.com> wrote:
> > > On Jun 28, 9:02 pm, Dave <dave_and_da...@juno.com> wrote:
> > > > Given an integer n, this code replaces n with n+1 without using
> > > > arithmetic operations:
> >
> > > > c = 1
> > > > repeat
> > > > d = n and c
> > > > n = n xor c
> > > > c = d left shifted by 1
> > > > until c = 0
> >
> > > > Dave
> >
> > > > On Jun 28, 4:16 pm, ankit mahendru <ankit.mahend...@gmail.com>
> wrote:
> >
> > > > > Q. Find the next number for a given number without using any
> > > arithmetic
> > > > > operators(use bit operations)
> >
> > > This adds two numbers with roughly the same algorithm:
> >
> > > int add(int x, int y)
> > > {
> > > for (;;) {
> > > int carry = (x & y) << 1;
> > > x ^= y;
> > > if (carry == 0) return x;
> > > y = carry;
> > > }
> > > }
> >
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