90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <valarray>
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// template<class T> class valarray;
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// void swap(valarray& v);
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#include <valarray>
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#include <cassert>
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int main()
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{
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{
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typedef int T;
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T a1[] = {1, 2, 3, 4, 5};
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T a2[] = {6, 7, 8, 9, 10, 11, 12};
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const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
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const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
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std::valarray<T> v1(a1, N1);
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std::valarray<T> v2(a2, N2);
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std::valarray<T> v1_save = v1;
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std::valarray<T> v2_save = v2;
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v1.swap(v2);
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assert(v1.size() == v2_save.size());
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for (int i = 0; i < v1.size(); ++i)
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assert(v1[i] == v2_save[i]);
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assert(v2.size() == v1_save.size());
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for (int i = 0; i < v2.size(); ++i)
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assert(v2[i] == v1_save[i]);
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}
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{
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typedef int T;
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T a1[] = {1, 2, 3, 4, 5};
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const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
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const unsigned N2 = 0;
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std::valarray<T> v1(a1, N1);
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std::valarray<T> v2;
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std::valarray<T> v1_save = v1;
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std::valarray<T> v2_save = v2;
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v1.swap(v2);
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assert(v1.size() == v2_save.size());
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for (int i = 0; i < v1.size(); ++i)
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assert(v1[i] == v2_save[i]);
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assert(v2.size() == v1_save.size());
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for (int i = 0; i < v2.size(); ++i)
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assert(v2[i] == v1_save[i]);
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}
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{
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typedef int T;
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T a2[] = {6, 7, 8, 9, 10, 11, 12};
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const unsigned N1 = 0;
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const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
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std::valarray<T> v1;
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std::valarray<T> v2(a2, N2);
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std::valarray<T> v1_save = v1;
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std::valarray<T> v2_save = v2;
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v1.swap(v2);
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assert(v1.size() == v2_save.size());
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for (int i = 0; i < v1.size(); ++i)
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assert(v1[i] == v2_save[i]);
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assert(v2.size() == v1_save.size());
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for (int i = 0; i < v2.size(); ++i)
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assert(v2[i] == v1_save[i]);
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}
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{
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typedef int T;
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const unsigned N1 = 0;
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const unsigned N2 = 0;
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std::valarray<T> v1;
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std::valarray<T> v2;
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std::valarray<T> v1_save = v1;
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std::valarray<T> v2_save = v2;
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v1.swap(v2);
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assert(v1.size() == v2_save.size());
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for (int i = 0; i < v1.size(); ++i)
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assert(v1[i] == v2_save[i]);
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assert(v2.size() == v1_save.size());
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for (int i = 0; i < v2.size(); ++i)
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assert(v2[i] == v1_save[i]);
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}
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}
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