Re: [Boost-users] Interval Library on MIPS

From: Guillaume Melquiond (guillaume.melquiond_at_[hidden])
Date: 2003-10-26 04:54:04

En réponse à "David A. Greene" <greened_at_[hidden]>:

> Hi,
> 
> I've been attempting to use the interval library on a
> MIPS/IRIX machine without luck.  The problem is that
> there is no native rounding support and we don't have
> a C99 environment.  I'm getting "Please specify rounding
> control mechanism" errors from the preprocessor.
> 
> The thing is, I don't need a rounding mode.  I simply
> want to use intervals of type int.  I could understand
> the error if I was trying to use floating-point intervals
> but shouldn't I be able to specify intervals that don't
> require rounding?  Or even specify intervals with a policy
> that ignores rounding?
> 
> Has anyone run into this problem before?  Is there a
> workaround?
> 
>                               -Dave

The header "numeric/interval.hpp" is meant to include almost all the other
public headers of the library, and in particular the ones responsible for
floating-point support. To avoid this problem, just use the other headers (all
the headers are public except the ones in the "detail" subdirectory).

For example, instead of using:

  #include <boost/numeric/interval.hpp>

you should use:

  #include <boost/numeric/interval/interval.hpp>
  #include <boost/numeric/interval/utility.hpp>
  #include <boost/numeric/interval/arith.hpp>
  ...

To know which headers you may need, you should refer to the documentation:

  libs/numeric/interval/doc/includes.htm

Regards,

Guillaume

PS: I don't know what you intend to do with the library, but please keep in mind
that just using the type boost::numeric::interval<int> does not provide any
guarantee of the inclusion property.