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Added missing includes, remove C++11 requirement, other code cleanup.

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Also, use Boost.Swap instead of the direct unqualified call to std::swap
and boost::enable_if_c instead of std::enable_if.
This commit is contained in:
Andrey Semashev
2018-11-03 23:10:44 +03:00
parent 2b08ca9368
commit 2f634ca78b
4 changed files with 39 additions and 29 deletions
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7
include/boost/integer/mod_inverse.hpp
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@ -8,7 +8,8 @@
#define BOOST_INTEGER_MOD_INVERSE_HPP
#include <stdexcept>
#include <boost/throw_exception.hpp>
#include <boost/optional.hpp>
#include <boost/none.hpp>
#include <boost/optional/optional.hpp>
#include <boost/integer/extended_euclidean.hpp>
namespace boost { namespace integer {
@ -25,7 +26,7 @@ boost::optional<Z> mod_inverse(Z a, Z modulus)
{
if (modulus < 2)
{
BOOST_THROW_EXCEPTION(std::domain_error("Modulus must be > 1."));
BOOST_THROW_EXCEPTION(std::domain_error("mod_inverse: modulus must be > 1"));
}
// make sure a < modulus:
a = a % modulus;
@ -34,7 +35,7 @@ boost::optional<Z> mod_inverse(Z a, Z modulus)
// a doesn't have a modular multiplicative inverse:
return boost::none;
}
euclidean_result_t<Z> u = extended_euclidean(a, modulus);
boost::integer::euclidean_result_t<Z> u = boost::integer::extended_euclidean(a, modulus);
if (u.gcd > 1)
{
return boost::none;