/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_function.h:199: error: ‘template<class _Tp> struct std::equal_to’ is not a function,

common/testhelper.hpp:126: error:   conflict with ‘template<class M1, class M2> bool equal_to(const boost::numeric::ublas::vector_expression<E>&, const boost::numeric::ublas::vector_expression<E2>&, double)’

test_assignment.cpp:30: error:   in call to ‘equal_to’

test_assignment.cpp:601:   instantiated from here

template < class M1, class M2 >

bool equal_to( const boost::numeric::ublas::vector_expression<M1> & m1,

               const boost::numeric::ublas::vector_expression<M2> & m2,

               double tolerance = 0.0 ) {

    if (m1().size() != m2().size()) {

        return false;

    }

    return mean_square(m2() - m1()) <= tolerance;

}

  template<typename _Tp>

    struct equal_to : public binary_function<_Tp, _Tp, bool>

    {

      bool

      operator()(const _Tp& __x, const _Tp& __y) const

      { return __x == __y; }

    };