Michael Stevens wrote:
The problem appears to be the old std::abs is not defined for built in types. I sure the problem will non exist for ever in the Comeau library. It could also be due to the --vc71 compatibility flag being set.
Hi again me :) This error goes away if you #include <cstdlib> in boost/numeric/ublas/traits.hpp (see attached patch) , no need to update boost/boost/numeric/ublas/config.hpp . I've checked in standard (ISO/IEC 14882:2003, clause 26.5) and it seems that both headers <cstdlib> and <cmath> are required to have full set of overloads of std::abs (I asked on comp.std.c++ if it's intended). Anyway I will send support request to Comeau asking about absence of float version in <cmath> . B. boost/boost/numeric/ublas/traits.hpp Index: boost/boost/numeric/ublas/traits.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/numeric/ublas/traits.hpp,v retrieving revision 1.24 diff -u -a -b -w -r1.24 traits.hpp --- boost/boost/numeric/ublas/traits.hpp 19 Aug 2004 06:37:05 -0000 1.24 +++ boost/boost/numeric/ublas/traits.hpp 23 Aug 2004 09:42:56 -0000 @@ -21,6 +21,7 @@ #include <iterator> #include <complex> #include <cmath> +#include <cstdlib> #include <boost/numeric/ublas/iterator.hpp> #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(BOOST_NO_SFINAE)