I added a cmath include and qualified isnan with std::, try it out now and see if that fixes it (commit 61ce8e1).
-Matt On Aug 20, 2016, at 9:23 AM, Ralf Mattes <r...@seid-online.de> wrote: > On Thu, Aug 18, 2016 at 05:44:46PM -0400, Matthew Keeter wrote: >> Hi Guile-folks, >> >> I wrote a computer-aided design (CAD) tool that you may find interesting. >> >> It’s a solid modeling tool that uses Guile scripts to define objects (and >> constructive solid geometry + functional representations under the hood). >> >> Project page: http://www.mattkeeter.com/projects/ao/ >> Source: https://github.com/mkeeter/ao >> >> I’d love feedback – Scheme is relatively new to me, so I’m sure there are >> more elegant ways to accomplish a lot of what the code implements. > > > Build fails over here: > > ../kernel/src/eval/evaluator.cpp: In function ‘Interval clause(Opcode, const > Interval&, const Interval&)’: > ../kernel/src/eval/evaluator.cpp:805:36: error: ‘isnan’ was not declared in > this scope > return (isnan(a.lower()) || isnan(a.upper())) ? b : a; > ^ > > This is with: > > /usr/bin/c++ --version > g++-5.real (Debian 5.4.0-6) 5.4.0 20160609 > > and /usr/include/c++/5/cmath from the package libstdc++-5-dev:amd64 > on a Debian Testing system. > > But it looks very nice > > > Cheers, Ralf Mattes > >> -Matt
