On Feb 2, 4:21 pm, "Bart Ogryczak" <[EMAIL PROTECTED]> wrote:
> On Feb 1, 2:00 pm, "Nicko" <[EMAIL PROTECTED]> wrote:
>
> > precision and the answer that they were looking for was:
> > a = (b * 04444444445L) >> 32
> > Note that the constant there is in octal.
>
> 04444444445L? Shouldn´t it be 04444444444?
> Or more generally,
> const = (1<<bitPrecision)/7
> a = (b * const)>>bitPrecision
It's to do with rounding. What you actually need is
ceiling((1<<bitPrecision)/7), rather than floor((1<<bitPrecision)/7).
Nicko
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