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Diffstat (limited to '3rdParty/Boost/src/boost/ratio/detail/mpl/gcd.hpp')
| -rw-r--r-- | 3rdParty/Boost/src/boost/ratio/detail/mpl/gcd.hpp | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/ratio/detail/mpl/gcd.hpp b/3rdParty/Boost/src/boost/ratio/detail/mpl/gcd.hpp new file mode 100644 index 0000000..c8258cf --- /dev/null +++ b/3rdParty/Boost/src/boost/ratio/detail/mpl/gcd.hpp @@ -0,0 +1,124 @@ +//////////////////////////////////////////////////////////////////// +// +// Copyright Vicente J. Botet Escriba 2010 +// +// 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/libs/mpl for documentation. +// +//////////////////////////////////////////////////////////////////// +#ifndef BOOST_MPL_GCD_HPP_INCLUDED +#define BOOST_MPL_GCD_HPP_INCLUDED + +#include <boost/mpl/integral_c.hpp> +#include <boost/ratio/detail/mpl/abs.hpp> +#include <boost/mpl/aux_/largest_int.hpp> +#include <boost/mpl/aux_/na_spec.hpp> +#include <boost/mpl/aux_/lambda_support.hpp> +#include <boost/mpl/aux_/config/eti.hpp> +#include <boost/mpl/aux_/config/integral.hpp> +#include <boost/mpl/aux_/config/static_constant.hpp> +#include <boost/mpl/aux_/config/dependent_nttp.hpp> +#include <boost/cstdint.hpp> + +#if !defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC_2) \ + && !defined(BOOST_MPL_PREPROCESSING_MODE) \ + && ( defined(BOOST_MSVC) \ + || BOOST_WORKAROUND(__EDG_VERSION__, <= 238) \ + ) + +# define BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC_2 + +#endif + +namespace boost { namespace mpl { + +template< typename Tag1, typename Tag2 > struct gcd_impl; + +template< typename T > struct gcd_tag +{ + typedef typename T::tag type; +}; + +template< + typename BOOST_MPL_AUX_NA_PARAM(N1) + , typename BOOST_MPL_AUX_NA_PARAM(N2) + > +struct gcd + : gcd_impl< + typename gcd_tag<N1>::type + , typename gcd_tag<N2>::type + >::template apply<N1, N2>::type +{ + BOOST_MPL_AUX_LAMBDA_SUPPORT(2, gcd, (N1, N2)) +}; + +BOOST_MPL_AUX_NA_SPEC(2, gcd) + +template< + typename T + , T n1 + , T n2 + > +struct gcd_c + : gcd<integral_c<T,n1>,integral_c<T,n2> > +{ +}; + +namespace aux { + + // Workaround for error: the type of partial specialization template parameter constant "n2" + // depends on another template parameter + // Note: this solution could be wrong for n1 or n2 = [2**63 .. 2**64-1] +#if defined(BOOST_MPL_CFG_NO_DEPENDENT_NONTYPE_PARAMETER_IN_PARTIAL_SPEC) + + template< typename T1, boost::intmax_t n1, bool n1_is_0 + , typename T2, boost::intmax_t n2, bool n2_is_0 > + struct gcd_aux + : gcd_aux<T2, n2, n2==0, T1, (n1 % n2), (n1 % n2)==0> + {}; + + template <typename T1, boost::intmax_t n1, typename T2, boost::intmax_t n2> + struct gcd_aux<T1, n1, false, T2, n2, true> : integral_c<T1, n1> + {}; + + template <typename T1, boost::intmax_t n1, typename T2, boost::intmax_t n2, bool C> + struct gcd_aux<T1, n1, true, T2, n2, C> : integral_c<T2, n2> + {}; + +#else // defined(BOOST_MPL_CFG_NO_DEPENDENT_NONTYPE_PARAMETER_IN_PARTIAL_SPEC) + + template< typename T1, T1 n1, bool n1_is_0, typename T2, T2 n2, bool n2_is_0 > + struct gcd_aux + + : gcd_aux<T2, n2, n2==0, + typename aux::largest_int<T1, T2>::type, + //~ T1, + (n1 % n2), (n1 % n2)==0> + {}; + + template <typename T1, T1 n1, typename T2, T2 n2> + struct gcd_aux<T1, n1, false, T2, n2, true> : integral_c<T1, n1> + {}; + + template <typename T1, T1 n1, typename T2, T2 n2, bool C> + struct gcd_aux<T1, n1, true, T2, n2, C> : integral_c<T2, n2> + {}; +#endif // defined(BOOST_MPL_CFG_NO_DEPENDENT_NONTYPE_PARAMETER_IN_PARTIAL_SPEC) +} + +template<> +struct gcd_impl<integral_c_tag, integral_c_tag> +{ + template< typename N1, typename N2 > struct apply + : abs<aux::gcd_aux< typename N1::value_type, N1::value, N1::value==0, + typename N2::value_type, N2::value, N2::value==0 > > + { + }; +}; + +}} + +#endif // BOOST_MPL_GCD_HPP_INCLUDED |