lockstep.cpp 1.0 KB

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  1. // Copyright Louis Dionne 2013-2017
  2. // Distributed under the Boost Software License, Version 1.0.
  3. // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
  4. #include <boost/hana/assert.hpp>
  5. #include <boost/hana/equal.hpp>
  6. #include <boost/hana/functional/lockstep.hpp>
  7. #include <laws/base.hpp>
  8. namespace hana = boost::hana;
  9. using hana::test::ct_eq;
  10. int main() {
  11. hana::test::_injection<0> f{};
  12. hana::test::_injection<1> g{};
  13. hana::test::_injection<2> h{};
  14. hana::test::_injection<3> i{};
  15. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  16. hana::lockstep(f)()(),
  17. f()
  18. ));
  19. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  20. hana::lockstep(f)(g)(ct_eq<1>{}),
  21. f(g(ct_eq<1>{}))
  22. ));
  23. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24. hana::lockstep(f)(g, h)(ct_eq<1>{}, ct_eq<2>{}),
  25. f(g(ct_eq<1>{}), h(ct_eq<2>{}))
  26. ));
  27. BOOST_HANA_CONSTANT_CHECK(hana::equal(
  28. hana::lockstep(f)(g, h, i)(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}),
  29. f(g(ct_eq<1>{}), h(ct_eq<2>{}), i(ct_eq<3>{}))
  30. ));
  31. }