1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <valarray> 10 11 // template<class T> class valarray; 12 13 // template<class T> 14 // void 15 // swap(valarray<T>& x, valarray<T>& y); 16 17 #include <valarray> 18 #include <cassert> 19 #include <cstddef> 20 21 int main(int, char**) 22 { 23 { 24 typedef int T; 25 T a1[] = {1, 2, 3, 4, 5}; 26 T a2[] = {6, 7, 8, 9, 10, 11, 12}; 27 const unsigned N1 = sizeof(a1)/sizeof(a1[0]); 28 const unsigned N2 = sizeof(a2)/sizeof(a2[0]); 29 std::valarray<T> v1(a1, N1); 30 std::valarray<T> v2(a2, N2); 31 std::valarray<T> v1_save = v1; 32 std::valarray<T> v2_save = v2; 33 swap(v1, v2); 34 assert(v1.size() == v2_save.size()); 35 for (std::size_t i = 0; i < v1.size(); ++i) 36 assert(v1[i] == v2_save[i]); 37 assert(v2.size() == v1_save.size()); 38 for (std::size_t i = 0; i < v2.size(); ++i) 39 assert(v2[i] == v1_save[i]); 40 } 41 { 42 typedef int T; 43 T a1[] = {1, 2, 3, 4, 5}; 44 const unsigned N1 = sizeof(a1)/sizeof(a1[0]); 45 std::valarray<T> v1(a1, N1); 46 std::valarray<T> v2; 47 std::valarray<T> v1_save = v1; 48 std::valarray<T> v2_save = v2; 49 swap(v1, v2); 50 assert(v1.size() == v2_save.size()); 51 for (std::size_t i = 0; i < v1.size(); ++i) 52 assert(v1[i] == v2_save[i]); 53 assert(v2.size() == v1_save.size()); 54 for (std::size_t i = 0; i < v2.size(); ++i) 55 assert(v2[i] == v1_save[i]); 56 } 57 { 58 typedef int T; 59 T a2[] = {6, 7, 8, 9, 10, 11, 12}; 60 const unsigned N2 = sizeof(a2)/sizeof(a2[0]); 61 std::valarray<T> v1; 62 std::valarray<T> v2(a2, N2); 63 std::valarray<T> v1_save = v1; 64 std::valarray<T> v2_save = v2; 65 swap(v1, v2); 66 assert(v1.size() == v2_save.size()); 67 for (std::size_t i = 0; i < v1.size(); ++i) 68 assert(v1[i] == v2_save[i]); 69 assert(v2.size() == v1_save.size()); 70 for (std::size_t i = 0; i < v2.size(); ++i) 71 assert(v2[i] == v1_save[i]); 72 } 73 { 74 typedef int T; 75 std::valarray<T> v1; 76 std::valarray<T> v2; 77 std::valarray<T> v1_save = v1; 78 std::valarray<T> v2_save = v2; 79 swap(v1, v2); 80 assert(v1.size() == v2_save.size()); 81 for (std::size_t i = 0; i < v1.size(); ++i) 82 assert(v1[i] == v2_save[i]); 83 assert(v2.size() == v1_save.size()); 84 for (std::size_t i = 0; i < v2.size(); ++i) 85 assert(v2[i] == v1_save[i]); 86 } 87 88 return 0; 89 } 90