AMDG Neal Becker wrote:

I'm trying to define an accumulator for complex types, abs_sqr. The test program is attached. I get an error from gcc-4.3.2 which I've never seen, and is not informative:

test_acc.cc:39: error: argument dependent lookup finds ‘struct boost::accumulators::tag::abs_sqr’ test_acc.cc:48: error: in call to ‘abs_sqr’

What do you want this to do? template<typename result_t, typename acc_t> inline result_t get_abs_sqr (acc_t const& acc) { return abs_sqr (acc); } There is no function called abs_sqr. In Christ, Steven Watanabe