Looking for arithmetic metafunctions for ratios.

14 Aug 2006

      Hi,

I'm looking for a metafunction like this:

template <
  class N1, class D1,
  class N2, class D2 >
struct times {
  typedef ... numer;
  typedef ... denom;
};

N1, D1, N2, and D2 are all MPL integral constant wrappers.  The numer
member of the times metafunction is the numerator N of the ratio
(preferably in reduced form) produced by (N1/D1) * (N2/D2) = (N/D).
Likewise, the denom member is the denominator D of the ratio produced
from this equation.

Any help greatly appreciated.

Thanks,
Eric.

Eric Lemings

Andy Little

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