/usr/include/boost/integer
Edit: /usr/include/boost/integer/common_factor_ct.hpp (3370B)
// Boost common_factor_ct.hpp header file ----------------------------------//
// (C) Copyright Daryle Walker and Stephen Cleary 2001-2002.
// 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_INTEGER_COMMON_FACTOR_CT_HPP
#define BOOST_INTEGER_COMMON_FACTOR_CT_HPP
#include
// self include
#include // for BOOST_STATIC_CONSTANT, etc.
namespace boost
{
namespace integer
{
// Implementation details --------------------------------------------------//
namespace detail
{
// Build GCD with Euclid's recursive algorithm
template < static_gcd_type Value1, static_gcd_type Value2 >
struct static_gcd_helper_t
{
private:
BOOST_STATIC_CONSTANT( static_gcd_type, new_value1 = Value2 );
BOOST_STATIC_CONSTANT( static_gcd_type, new_value2 = Value1 % Value2 );
#ifndef BOOST_BORLANDC
#define BOOST_DETAIL_GCD_HELPER_VAL(Value) static_cast(Value)
#else
typedef static_gcd_helper_t self_type;
#define BOOST_DETAIL_GCD_HELPER_VAL(Value) (self_type:: Value )
#endif
typedef static_gcd_helper_t< BOOST_DETAIL_GCD_HELPER_VAL(new_value1),
BOOST_DETAIL_GCD_HELPER_VAL(new_value2) > next_step_type;
#undef BOOST_DETAIL_GCD_HELPER_VAL
public:
BOOST_STATIC_CONSTANT( static_gcd_type, value = next_step_type::value );
};
// Non-recursive case
template < static_gcd_type Value1 >
struct static_gcd_helper_t< Value1, 0UL >
{
BOOST_STATIC_CONSTANT( static_gcd_type, value = Value1 );
};
// Build the LCM from the GCD
template < static_gcd_type Value1, static_gcd_type Value2 >
struct static_lcm_helper_t
{
typedef static_gcd_helper_t gcd_type;
BOOST_STATIC_CONSTANT( static_gcd_type, value = Value1 / gcd_type::value
* Value2 );
};
// Special case for zero-GCD values
template < >
struct static_lcm_helper_t< 0UL, 0UL >
{
BOOST_STATIC_CONSTANT( static_gcd_type, value = 0UL );
};
} // namespace detail
// Compile-time greatest common divisor evaluator class declaration --------//
template < static_gcd_type Value1, static_gcd_type Value2 > struct static_gcd
{
BOOST_STATIC_CONSTANT( static_gcd_type, value = (detail::static_gcd_helper_t::value) );
}; // boost::integer::static_gcd
#if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
template< static_gcd_type Value1, static_gcd_type Value2 > static_gcd_type const static_gcd< Value1, Value2 >::value;
#endif
// Compile-time least common multiple evaluator class declaration ----------//
template < static_gcd_type Value1, static_gcd_type Value2 > struct static_lcm
{
BOOST_STATIC_CONSTANT( static_gcd_type, value = (detail::static_lcm_helper_t::value) );
}; // boost::integer::static_lcm
#if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
template< static_gcd_type Value1, static_gcd_type Value2 > static_gcd_type const static_lcm< Value1, Value2 >::value;
#endif
} // namespace integer
} // namespace boost
#endif // BOOST_INTEGER_COMMON_FACTOR_CT_HPP