Edit: /usr/include/boost/units/pow.hpp (3033B)
// Boost.Units - A C++ library for zero-overhead dimensional analysis and
// unit/quantity manipulation and conversion
//
// Copyright (C) 2003-2008 Matthias Christian Schabel
// Copyright (C) 2008 Steven Watanabe
//
// Distributed under 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)
#ifndef BOOST_UNITS_POW_HPP
#define BOOST_UNITS_POW_HPP
#include
#include
#include
#include
/// \file
/// \brief Raise values to exponents known at compile-time.
namespace boost {
namespace units {
/// raise a value to a @c static_rational power.
template
BOOST_CONSTEXPR
inline typename power_typeof_helper::type
pow(const Y& x)
{
return power_typeof_helper::value(x);
}
/// raise a value to an integer power.
template
BOOST_CONSTEXPR
inline typename power_typeof_helper >::type
pow(const Y& x)
{
return power_typeof_helper >::value(x);
}
#ifndef BOOST_UNITS_DOXYGEN
/// raise @c T to a @c static_rational power.
template
struct power_typeof_helper >
{
typedef typename mpl::if_, double, T>::type internal_type;
typedef detail::static_rational_power_impl, internal_type> impl;
typedef typename impl::type type;
static BOOST_CONSTEXPR type value(const T& x)
{
return impl::call(x);
}
};
/// raise @c float to a @c static_rational power.
template
struct power_typeof_helper >
{
// N.B. pathscale doesn't accept inheritance for some reason.
typedef power_typeof_helper > base;
typedef typename base::type type;
static BOOST_CONSTEXPR type value(const double& x)
{
return base::value(x);
}
};
#endif
/// take the @c static_rational root of a value.
template
BOOST_CONSTEXPR
typename root_typeof_helper::type
root(const Y& x)
{
return root_typeof_helper::value(x);
}
/// take the integer root of a value.
template
BOOST_CONSTEXPR
typename root_typeof_helper >::type
root(const Y& x)
{
return root_typeof_helper >::value(x);
}
#ifndef BOOST_UNITS_DOXYGEN
/// take @c static_rational root of an @c T
template
struct root_typeof_helper >
{
// N.B. pathscale doesn't accept inheritance for some reason.
typedef power_typeof_helper > base;
typedef typename base::type type;
static BOOST_CONSTEXPR type value(const T& x)
{
return(base::value(x));
}
};
#endif
} // namespace units
} // namespace boost
#endif // BOOST_UNITS_STATIC_RATIONAL_HPP