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// (C) Copyright John Maddock 2007.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/math/special_functions/trunc.hpp>
#ifndef BOOST_MATH_TEST_FUNCTOR_HPP
#define BOOST_MATH_TEST_FUNCTOR_HPP
template <class Real>
struct extract_result_type
{
extract_result_type(unsigned i) : m_location(i){}
template <class S>
Real operator()(const S& row)
{
return row[m_location];
}
private:
unsigned m_location;
};
template <class Real>
inline extract_result_type<Real> extract_result(unsigned i)
{
return extract_result_type<Real>(i);
}
template <class Real, class F>
struct row_binder1
{
row_binder1(F _f, unsigned i) : f(_f), m_i(i) {}
template <class S>
Real operator()(const S& row)
{
return f(row[m_i]);
}
private:
F f;
unsigned m_i;
};
template<class Real, class F>
inline row_binder1<Real, F> bind_func(F f, unsigned i)
{
return row_binder1<Real, F>(f, i);
}
template <class Real, class F>
struct row_binder2
{
row_binder2(F _f, unsigned i, unsigned j) : f(_f), m_i(i), m_j(j) {}
template <class S>
Real operator()(const S& row)
{
return f(row[m_i], row[m_j]);
}
private:
F f;
unsigned m_i, m_j;
};
template<class Real, class F>
inline row_binder2<Real, F> bind_func(F f, unsigned i, unsigned j)
{
return row_binder2<Real, F>(f, i, j);
}
template <class Real, class F>
struct row_binder3
{
row_binder3(F _f, unsigned i, unsigned j, unsigned k) : f(_f), m_i(i), m_j(j), m_k(k) {}
template <class S>
Real operator()(const S& row)
{
return f(row[m_i], row[m_j], row[m_k]);
}
private:
F f;
unsigned m_i, m_j, m_k;
};
template<class Real, class F>
inline row_binder3<Real, F> bind_func(F f, unsigned i, unsigned j, unsigned k)
{
return row_binder3<Real, F>(f, i, j, k);
}
template <class Real, class F>
struct row_binder4
{
row_binder4(F _f, unsigned i, unsigned j, unsigned k, unsigned l) : f(_f), m_i(i), m_j(j), m_k(k), m_l(l) {}
template <class S>
Real operator()(const S& row)
{
return f(row[m_i], row[m_j], row[m_k], row[m_l]);
}
private:
F f;
unsigned m_i, m_j, m_k, m_l;
};
template<class Real, class F>
inline row_binder4<Real, F> bind_func(F f, unsigned i, unsigned j, unsigned k, unsigned l)
{
return row_binder4<Real, F>(f, i, j, k, l);
}
template <class Real, class F>
struct row_binder2_i1
{
row_binder2_i1(F _f, unsigned i, unsigned j) : f(_f), m_i(i), m_j(j) {}
template <class S>
Real operator()(const S& row)
{
return f(boost::math::itrunc(Real(row[m_i])), row[m_j]);
}
private:
F f;
unsigned m_i, m_j;
};
template<class Real, class F>
inline row_binder2_i1<Real, F> bind_func_int1(F f, unsigned i, unsigned j)
{
return row_binder2_i1<Real, F>(f, i, j);
}
template <class Real, class F>
struct row_binder3_i2
{
row_binder3_i2(F _f, unsigned i, unsigned j, unsigned k) : f(_f), m_i(i), m_j(j), m_k(k) {}
template <class S>
Real operator()(const S& row)
{
return f(
boost::math::itrunc(Real(row[m_i])),
boost::math::itrunc(Real(row[m_j])),
row[m_k]);
}
private:
F f;
unsigned m_i, m_j, m_k;
};
template<class Real, class F>
inline row_binder3_i2<Real, F> bind_func_int2(F f, unsigned i, unsigned j, unsigned k)
{
return row_binder3_i2<Real, F>(f, i, j, k);
}
template <class Real, class F>
struct row_binder4_i2
{
row_binder4_i2(F _f, unsigned i, unsigned j, unsigned k, unsigned l) : f(_f), m_i(i), m_j(j), m_k(k), m_l(l) {}
template <class S>
Real operator()(const S& row)
{
return f(
boost::math::itrunc(Real(row[m_i])),
boost::math::itrunc(Real(row[m_j])),
row[m_k],
row[m_l]);
}
private:
F f;
unsigned m_i, m_j, m_k, m_l;
};
template<class Real, class F>
inline row_binder4_i2<Real, F> bind_func_int2(F f, unsigned i, unsigned j, unsigned k, unsigned l)
{
return row_binder4_i2<Real, F>(f, i, j, k, l);
}
template <class Real, class F>
struct negate_type
{
negate_type(F f) : m_f(f){}
template <class S>
Real operator()(const S& row)
{
return -Real(m_f(row));
}
private:
F m_f;
};
template <class Real, class F>
inline negate_type<Real, F> negate(F f)
{
return negate_type<Real, F>(f);
}
#endif
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