diff options
Diffstat (limited to 'test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp')
| -rw-r--r-- | test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp | 39 | 
1 files changed, 39 insertions, 0 deletions
diff --git a/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp new file mode 100644 index 0000000000000..f132c8d4bd9b2 --- /dev/null +++ b/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp @@ -0,0 +1,39 @@ +//===----------------------------------------------------------------------===// +// +//                     The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +// <functional> + +// multiplies + +#include <functional> +#include <type_traits> +#include <cassert> + +int main() +{ +    typedef std::multiplies<int> F; +    const F f = F(); +    static_assert((std::is_same<int, F::first_argument_type>::value), "" ); +    static_assert((std::is_same<int, F::second_argument_type>::value), "" ); +    static_assert((std::is_same<int, F::result_type>::value), "" ); +    assert(f(3, 2) == 6); +#if _LIBCPP_STD_VER > 11 +    typedef std::multiplies<> F2; +    const F2 f2 = F2(); +    assert(f2(3,2) == 6); +    assert(f2(3.0, 2) == 6); +    assert(f2(3, 2.5) == 7.5); // exact in binary + +    constexpr int foo = std::multiplies<int> () (3, 2); +    static_assert ( foo == 6, "" ); + +    constexpr int bar = std::multiplies<> () (3.0, 2); +    static_assert ( bar == 6, "" ); +#endif +}  | 
