#include <Windows.h>
#include <cmath>
#include <boost/python.hpp>

const double e = 2.7182818284590452353602874713527;

double sinh_impl(double x) {
    return (1 - pow(e, (-2 * x))) / (2 * pow(e, -x));
}

double cosh_impl(double x) {
    return (1 + pow(e, (-2 * x))) / (2 * pow(e, -x));
}

double tanh_impl(double x) {
    return sinh_impl(x) / cosh_impl(x);
}

BOOST_PYTHON_MODULE(superfastcode_boost)
{
    using namespace boost::python;
    def("boost_tanh", tanh_impl);
}