initializer_list_assign.pass.cpp (2276B)
1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03 11 12 // <valarray> 13 14 // template<class T> class valarray; 15 16 // valarray& operator=(initializer_list<value_type> il); 17 18 #include <valarray> 19 #include <cassert> 20 #include <cstddef> 21 22 struct S 23 { 24 S() : x_(0) { default_ctor_called = true; } 25 S(int x) : x_(x) {} 26 int x_; 27 static bool default_ctor_called; 28 }; 29 30 bool S::default_ctor_called = false; 31 32 bool operator==(const S& lhs, const S& rhs) 33 { 34 return lhs.x_ == rhs.x_; 35 } 36 37 int main() 38 { 39 { 40 typedef int T; 41 T a[] = {1, 2, 3, 4, 5}; 42 const unsigned N = sizeof(a)/sizeof(a[0]); 43 std::valarray<T> v2; 44 v2 = {1, 2, 3, 4, 5}; 45 assert(v2.size() == N); 46 for (std::size_t i = 0; i < v2.size(); ++i) 47 assert(v2[i] == a[i]); 48 } 49 { 50 typedef double T; 51 T a[] = {1, 2.5, 3, 4.25, 5}; 52 const unsigned N = sizeof(a)/sizeof(a[0]); 53 std::valarray<T> v2; 54 v2 = {1, 2.5, 3, 4.25, 5}; 55 assert(v2.size() == N); 56 for (std::size_t i = 0; i < v2.size(); ++i) 57 assert(v2[i] == a[i]); 58 } 59 { 60 typedef std::valarray<double> T; 61 T a[] = {T(1), T(2), T(3), T(4), T(5)}; 62 const unsigned N = sizeof(a)/sizeof(a[0]); 63 std::valarray<T> v2(a, N-2); 64 v2 = {T(1), T(2), T(3), T(4), T(5)}; 65 assert(v2.size() == N); 66 for (unsigned i = 0; i < N; ++i) 67 { 68 assert(v2[i].size() == a[i].size()); 69 for (std::size_t j = 0; j < a[i].size(); ++j) 70 assert(v2[i][j] == a[i][j]); 71 } 72 } 73 { 74 typedef S T; 75 T a[] = {T(1), T(2), T(3), T(4), T(5)}; 76 const unsigned N = sizeof(a)/sizeof(a[0]); 77 std::valarray<T> v2; 78 v2 = {T(1), T(2), T(3), T(4), T(5)}; 79 assert(v2.size() == N); 80 for (std::size_t i = 0; i < v2.size(); ++i) 81 assert(v2[i] == a[i]); 82 assert(!S::default_ctor_called); 83 } 84 }