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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <ratio>
//
// [ratio.general]/2
// Throughout subclause [ratio], the names of template parameters are
// used to express type requirements. If a template parameter is named
// R1 or R2, and the template argument is not a specialization of the
// ratio template, the program is ill-formed.
#include <ratio>
struct invalid {
static const int num = 1;
static const int den = 1;
};
using valid = std::ratio<1, 1>;
namespace add {
using valid_valid = std::ratio_add<valid, valid>::type;
using invalid_valid =
std::ratio_add<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
using valid_invalid =
std::ratio_add<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
} // namespace add
namespace subtract {
using valid_valid = std::ratio_subtract<valid, valid>::type;
using invalid_valid =
std::ratio_subtract<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
using valid_invalid =
std::ratio_subtract<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
} // namespace subtract
namespace multiply {
using valid_valid = std::ratio_multiply<valid, valid>::type;
using invalid_valid =
std::ratio_multiply<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
using valid_invalid =
std::ratio_multiply<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
} // namespace multiply
namespace divide {
using valid_valid = std::ratio_divide<valid, valid>::type;
using invalid_valid =
std::ratio_divide<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
using valid_invalid =
std::ratio_divide<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
} // namespace divide
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