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hana/example/integral.cpp

43 lines
1.3 KiB
C++

/*
@copyright Louis Dionne 2014
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#include <boost/hana/assert.hpp>
#include <boost/hana/integral.hpp>
using namespace boost::hana;
int main() {
//! [comparable]
BOOST_HANA_CONSTANT_CHECK(equal(int_<1>, int_<1>));
BOOST_HANA_CONSTANT_CHECK(not_equal(int_<1>, int_<2>));
BOOST_HANA_CONSTANT_CHECK(equal(int_<1>, long_<1>));
BOOST_HANA_CONSTANT_CHECK(not_equal(int_<1>, long_<2>));
//! [comparable]
//! [literals]
using namespace literals; // contains the _c suffix
BOOST_HANA_CONSTANT_CHECK(1234_c == llong<1234>);
BOOST_HANA_CONSTANT_CHECK(-1234_c == llong<-1234>);
BOOST_HANA_CONSTANT_CHECK(1_c + (3_c * 4_c) == llong<1 + (3 * 4)>);
//! [literals]
//! [operators]
BOOST_HANA_CONSTANT_CHECK(int_<1> + int_<3> == int_<4>);
// Mixed-type operations are supported:
BOOST_HANA_CONSTANT_CHECK(size_t<3> * ushort<5> == size_t<15>);
BOOST_HANA_CONSTANT_CHECK(size_t<15> == int_<15>);
//! [operators]
//! [orderable]
BOOST_HANA_CONSTANT_CHECK(less(int_<-3>, int_<3>));
BOOST_HANA_CONSTANT_CHECK(max(int_<-3>, long_<2>) == long_<2>);
BOOST_HANA_CONSTANT_CHECK(min(int_<-3>, long_<2>) == int_<-3>);
//! [orderable]
}