libstdc++-v3/testsuite/experimental/numeric/lcm.cc

   1 // Copyright (C) 2015-2022 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile { target c++14 } }
  19
  20 #include <experimental/numeric>
  21
  22 using std::experimental::fundamentals_v2::lcm;
  23
  24 static_assert(lcm(21, 6) == 42, "");
  25 static_assert(lcm(41, 0) == 0, "LCD with zero is zero");
  26 static_assert(lcm(0, 7) == 0, "LCD with zero is zero");
  27 static_assert(lcm(0, 0) == 0, "no division by zero");
  28
  29 static_assert(lcm(1u, 2) == 2, "unsigned and signed");
  30 static_assert(lcm(3, 4u) == 12, "signed and unsigned");
  31 static_assert(lcm(5u, 6u) == 30, "unsigned and unsigned");