Bugs item #1553359, was opened at 2006-09-06 04:59 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1553359&group_id=7586 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: test Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Beman Dawes (beman_dawes) Summary: floating point comparison algorithm Initial Comment: The floating point comparison algorithm does not seem to work if one of the floating points is zero and the other one is close to zero. Here's the code sample I've used: close_at_tolerance<double> checker(0.01); const double a = 0.0; const double b = 0.0000001; bool res = checker(a, b); if (!res) { std::cerr << "ERROR" << std::endl; } I think the following check must be added in the close_at_tolerance<FPT>::operator() function: bool operator()( FPT left, FPT right ) const { if (left == 0.0 || right == 0.0) { return (p_fraction_tolerance.get() > tt_detail::fpt_abs(left-right)); } // ... } My email address is "tom.vanroey@vito.be". ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1553359&group_id=7586 ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Boost-bugs mailing list Boost-bugs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs