| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <ratio> |
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| 10 | // |
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| 11 | // [ratio.general]/2 |
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| 12 | // Throughout subclause [ratio], the names of template parameters are |
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| 13 | // used to express type requirements. If a template parameter is named |
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| 14 | // R1 or R2, and the template argument is not a specialization of the |
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| 15 | // ratio template, the program is ill-formed. |
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| 16 | |
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| 17 | #include <ratio> |
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| 18 | |
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| 19 | struct invalid { |
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| 20 | static const int num = 1; |
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| 21 | static const int den = 1; |
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| 22 | }; |
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| 23 | |
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| 24 | using valid = std::ratio<1, 1>; |
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| 25 | |
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| 26 | namespace add { |
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| 27 | using valid_valid = std::ratio_add<valid, valid>::type; |
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| 28 | using invalid_valid = |
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| 29 | std::ratio_add<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} |
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| 30 | using valid_invalid = |
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| 31 | std::ratio_add<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} |
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| 32 | } // namespace add |
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| 33 | |
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| 34 | namespace subtract { |
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| 35 | using valid_valid = std::ratio_subtract<valid, valid>::type; |
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| 36 | using invalid_valid = |
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| 37 | std::ratio_subtract<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} |
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| 38 | using valid_invalid = |
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| 39 | std::ratio_subtract<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} |
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| 40 | } // namespace subtract |
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| 41 | |
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| 42 | namespace multiply { |
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| 43 | using valid_valid = std::ratio_multiply<valid, valid>::type; |
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| 44 | using invalid_valid = |
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| 45 | std::ratio_multiply<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} |
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| 46 | using valid_invalid = |
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| 47 | std::ratio_multiply<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} |
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| 48 | } // namespace multiply |
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| 49 | |
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| 50 | namespace divide { |
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| 51 | using valid_valid = std::ratio_divide<valid, valid>::type; |
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| 52 | using invalid_valid = |
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| 53 | std::ratio_divide<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} |
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| 54 | using valid_invalid = |
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| 55 | std::ratio_divide<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} |
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| 56 | } // namespace divide |
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| 57 | |
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