1*fe0d277fSMark de Wever //===----------------------------------------------------------------------===// 2*fe0d277fSMark de Wever // 3*fe0d277fSMark de Wever // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*fe0d277fSMark de Wever // See https://llvm.org/LICENSE.txt for license information. 5*fe0d277fSMark de Wever // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*fe0d277fSMark de Wever // 7*fe0d277fSMark de Wever //===----------------------------------------------------------------------===// 8*fe0d277fSMark de Wever 9*fe0d277fSMark de Wever // <ratio> 10*fe0d277fSMark de Wever // 11*fe0d277fSMark de Wever // [ratio.general]/2 12*fe0d277fSMark de Wever // Throughout subclause [ratio], the names of template parameters are 13*fe0d277fSMark de Wever // used to express type requirements. If a template parameter is named 14*fe0d277fSMark de Wever // R1 or R2, and the template argument is not a specialization of the 15*fe0d277fSMark de Wever // ratio template, the program is ill-formed. 16*fe0d277fSMark de Wever 17*fe0d277fSMark de Wever #include <ratio> 18*fe0d277fSMark de Wever 19*fe0d277fSMark de Wever struct invalid { 20*fe0d277fSMark de Wever static const int num = 1; 21*fe0d277fSMark de Wever static const int den = 1; 22*fe0d277fSMark de Wever }; 23*fe0d277fSMark de Wever 24*fe0d277fSMark de Wever using valid = std::ratio<1, 1>; 25*fe0d277fSMark de Wever 26*fe0d277fSMark de Wever namespace add { 27*fe0d277fSMark de Wever using valid_valid = std::ratio_add<valid, valid>::type; 28*fe0d277fSMark de Wever using invalid_valid = 29*fe0d277fSMark de Wever std::ratio_add<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} 30*fe0d277fSMark de Wever using valid_invalid = 31*fe0d277fSMark de Wever std::ratio_add<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} 32*fe0d277fSMark de Wever } // namespace add 33*fe0d277fSMark de Wever 34*fe0d277fSMark de Wever namespace subtract { 35*fe0d277fSMark de Wever using valid_valid = std::ratio_subtract<valid, valid>::type; 36*fe0d277fSMark de Wever using invalid_valid = 37*fe0d277fSMark de Wever std::ratio_subtract<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} 38*fe0d277fSMark de Wever using valid_invalid = 39*fe0d277fSMark de Wever std::ratio_subtract<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} 40*fe0d277fSMark de Wever } // namespace subtract 41*fe0d277fSMark de Wever 42*fe0d277fSMark de Wever namespace multiply { 43*fe0d277fSMark de Wever using valid_valid = std::ratio_multiply<valid, valid>::type; 44*fe0d277fSMark de Wever using invalid_valid = 45*fe0d277fSMark de Wever std::ratio_multiply<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} 46*fe0d277fSMark de Wever using valid_invalid = 47*fe0d277fSMark de Wever std::ratio_multiply<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} 48*fe0d277fSMark de Wever } // namespace multiply 49*fe0d277fSMark de Wever 50*fe0d277fSMark de Wever namespace divide { 51*fe0d277fSMark de Wever using valid_valid = std::ratio_divide<valid, valid>::type; 52*fe0d277fSMark de Wever using invalid_valid = 53*fe0d277fSMark de Wever std::ratio_divide<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}} 54*fe0d277fSMark de Wever using valid_invalid = 55*fe0d277fSMark de Wever std::ratio_divide<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}} 56*fe0d277fSMark de Wever } // namespace divide 57