divides.pass.cpp revision 9738cafa4f5c5ce19cd674e7e8c38376eaac8abe
1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <functional> 11 12// divides 13 14#include <functional> 15#include <type_traits> 16#include <cassert> 17 18int main() 19{ 20 typedef std::divides<int> F; 21 const F f = F(); 22 static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), ""); 23 assert(f(36, 4) == 9); 24#if _LIBCPP_STD_VER > 11 25 typedef std::divides<> F2; 26 const F2 f2 = F2(); 27 assert(f2(36, 4) == 9); 28 assert(f2(36.0, 4) == 9); 29 assert(f2(18, 4.0) == 4.5); // exact in binary 30 31 constexpr int foo = std::divides<int> () (3, 2); 32 static_assert ( foo == 1, "" ); 33 34 constexpr int bar = std::divides<> () (3.0, 2); 35 static_assert ( bar == 1, "" ); 36#endif 37} 38