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Diffstat (limited to 'src/third_party/boost-1.56.0/boost/math/special_functions/pow.hpp')
-rw-r--r-- | src/third_party/boost-1.56.0/boost/math/special_functions/pow.hpp | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/src/third_party/boost-1.56.0/boost/math/special_functions/pow.hpp b/src/third_party/boost-1.56.0/boost/math/special_functions/pow.hpp deleted file mode 100644 index 4e9a252c0b8..00000000000 --- a/src/third_party/boost-1.56.0/boost/math/special_functions/pow.hpp +++ /dev/null @@ -1,141 +0,0 @@ -// Boost pow.hpp header file -// Computes a power with exponent known at compile-time - -// (C) Copyright Bruno Lalande 2008. -// 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) - -// See http://www.boost.org for updates, documentation, and revision history. - - -#ifndef BOOST_MATH_POW_HPP -#define BOOST_MATH_POW_HPP - - -#include <boost/math/special_functions/math_fwd.hpp> -#include <boost/math/policies/policy.hpp> -#include <boost/math/policies/error_handling.hpp> -#include <boost/math/tools/promotion.hpp> -#include <boost/mpl/greater_equal.hpp> - - -namespace boost { -namespace math { - - -namespace detail { - - -template <int N, int M = N%2> -struct positive_power -{ - template <typename T> - static T result(T base) - { - T power = positive_power<N/2>::result(base); - return power * power; - } -}; - -template <int N> -struct positive_power<N, 1> -{ - template <typename T> - static T result(T base) - { - T power = positive_power<N/2>::result(base); - return base * power * power; - } -}; - -template <> -struct positive_power<1, 1> -{ - template <typename T> - static T result(T base){ return base; } -}; - - -template <int N, bool> -struct power_if_positive -{ - template <typename T, class Policy> - static T result(T base, const Policy&) - { return positive_power<N>::result(base); } -}; - -template <int N> -struct power_if_positive<N, false> -{ - template <typename T, class Policy> - static T result(T base, const Policy& policy) - { - if (base == 0) - { - return policies::raise_overflow_error<T>( - "boost::math::pow(%1%)", - "Attempted to compute a negative power of 0", - policy - ); - } - - return T(1) / positive_power<-N>::result(base); - } -}; - -template <> -struct power_if_positive<0, true> -{ - template <typename T, class Policy> - static T result(T base, const Policy& policy) - { - if (base == 0) - { - return policies::raise_indeterminate_result_error<T>( - "boost::math::pow(%1%)", - "The result of pow<0>(%1%) is undetermined", - base, - T(1), - policy - ); - } - - return T(1); - } -}; - - -template <int N> -struct select_power_if_positive -{ - typedef typename mpl::greater_equal< - mpl::int_<N>, - mpl::int_<0> - >::type is_positive; - - typedef power_if_positive<N, is_positive::value> type; -}; - - -} // namespace detail - - -template <int N, typename T, class Policy> -inline typename tools::promote_args<T>::type pow(T base, const Policy& policy) -{ - typedef typename tools::promote_args<T>::type result_type; - return detail::select_power_if_positive<N>::type::result(static_cast<result_type>(base), policy); -} - - -template <int N, typename T> -inline typename tools::promote_args<T>::type pow(T base) -{ return pow<N>(base, policies::policy<>()); } - - -} // namespace math -} // namespace boost - - -#endif |