92 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <valarray>10 11// template<class T> class valarray;12 13// template<class T>14// void15// swap(valarray<T>& x, valarray<T>& y);16 17#include <valarray>18#include <cassert>19#include <cstddef>20 21#include "test_macros.h"22 23int main(int, char**)24{25 {26 typedef int T;27 T a1[] = {1, 2, 3, 4, 5};28 T a2[] = {6, 7, 8, 9, 10, 11, 12};29 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);30 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);31 std::valarray<T> v1(a1, N1);32 std::valarray<T> v2(a2, N2);33 std::valarray<T> v1_save = v1;34 std::valarray<T> v2_save = v2;35 swap(v1, v2);36 assert(v1.size() == v2_save.size());37 for (std::size_t i = 0; i < v1.size(); ++i)38 assert(v1[i] == v2_save[i]);39 assert(v2.size() == v1_save.size());40 for (std::size_t i = 0; i < v2.size(); ++i)41 assert(v2[i] == v1_save[i]);42 }43 {44 typedef int T;45 T a1[] = {1, 2, 3, 4, 5};46 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);47 std::valarray<T> v1(a1, N1);48 std::valarray<T> v2;49 std::valarray<T> v1_save = v1;50 std::valarray<T> v2_save = v2;51 swap(v1, v2);52 assert(v1.size() == v2_save.size());53 for (std::size_t i = 0; i < v1.size(); ++i)54 assert(v1[i] == v2_save[i]);55 assert(v2.size() == v1_save.size());56 for (std::size_t i = 0; i < v2.size(); ++i)57 assert(v2[i] == v1_save[i]);58 }59 {60 typedef int T;61 T a2[] = {6, 7, 8, 9, 10, 11, 12};62 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);63 std::valarray<T> v1;64 std::valarray<T> v2(a2, N2);65 std::valarray<T> v1_save = v1;66 std::valarray<T> v2_save = v2;67 swap(v1, v2);68 assert(v1.size() == v2_save.size());69 for (std::size_t i = 0; i < v1.size(); ++i)70 assert(v1[i] == v2_save[i]);71 assert(v2.size() == v1_save.size());72 for (std::size_t i = 0; i < v2.size(); ++i)73 assert(v2[i] == v1_save[i]);74 }75 {76 typedef int T;77 std::valarray<T> v1;78 std::valarray<T> v2;79 std::valarray<T> v1_save = v1;80 std::valarray<T> v2_save = v2;81 swap(v1, v2);82 assert(v1.size() == v2_save.size());83 for (std::size_t i = 0; i < v1.size(); ++i)84 assert(v1[i] == v2_save[i]);85 assert(v2.size() == v1_save.size());86 for (std::size_t i = 0; i < v2.size(); ++i)87 assert(v2[i] == v1_save[i]);88 }89 90 return 0;91}92