Boost C++ Libraries: Ticket #5498: Issues with the Interval Library

attachment set

anonymous — Sat, 23 Apr 2011 09:11:56 GMT

attachment → TestBug.cc

anonymous — Wed, 28 Sep 2011 04:59:03 GMT

I (Daniel Duffy) discovered the cause: Interval does not provide default implementation of up and down rounding policies. As a POC, I created a simple policy that I tested with interval Newton Raphson

anonymous — Wed, 28 Sep 2011 05:00:12 GMT

class DDPolicy : public rounded_math<double> { public:

double exp_up(double x) { return ::exp(x);} double exp_down(double x) { return ::exp(x);}

etc.

};

Transcendental functions boost::numeric::interval<double, policies<DDPolicy, checking_strict<double> > > rA; boost::numeric::interval<double, policies<DDPolicy, checking_strict<double> > > rB;

rB = exp(rA);

viboes — Wed, 12 Jun 2013 21:35:53 GMT

How is this a showstopper?

severity changed

viboes — Sun, 07 Jul 2013 16:40:40 GMT

severity Showstopper → Problem

anonymous — Sat, 05 Oct 2013 18:38:58 GMT

Well. IMO is still a show stopper and it has not been solved.

Daniel Duffy

anonymous — Sat, 05 Oct 2013 18:47:09 GMT

It's a show stopper because you can't <cmath> functionality on Interval. But +, -, * and / do work.

anonymous — Sun, 21 Dec 2014 21:17:59 GMT

We are now 4 years on. You conventiently changed status to PROBLEM...

Has this show stopper been resolved? IMO it's easy to fix.

thanks

Daniel J. Duffy

anonymous — Tue, 03 Nov 2015 21:50:32 GMT

Anybody with a solution??