Re: [ublas] abs<int>

From: Neal Becker (ndbecker2_at_[hidden])
Date: 2007-05-01 10:34:02

Neal Becker wrote:

> Thanks for adding abs to traits.hpp.  I use vector<int>.  This compiles
> fine
> on gcc-4.1.1, but not gcc-3.4.6.  Any suggestions?
> 

Looks like this will work.  Problem is not just with <int>.  Probably a problem with ADL?
#if __GNUG__ < 4
#include <boost/type_traits.hpp>
#include <boost/utility/enable_if.hpp>

namespace boost { namespace numeric { namespace ublas {
template<typename T>
inline typename enable_if_c<boost::is_arithmetic<T>::value, T>::type 
abs(const T& x) { return (x >= 0) ? x : -x ; }
}}}
#endif