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 // <valarray> 11 12 // template <class T> class slice_array 13 14 // const slice_array& operator=(const slice_array& sa) const; 15 16 #include <valarray> 17 #include <cassert> 18 19 int main() 20 { 21 { 22 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 23 int a2[] = {-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12}; 24 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0])); 25 const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0])); 26 v1[std::slice(1, 5, 3)] = v2[std::slice(2, 5, 2)]; 27 assert(v1.size() == 16); 28 assert(v1[ 0] == 0); 29 assert(v1[ 1] == -3); 30 assert(v1[ 2] == 2); 31 assert(v1[ 3] == 3); 32 assert(v1[ 4] == -5); 33 assert(v1[ 5] == 5); 34 assert(v1[ 6] == 6); 35 assert(v1[ 7] == -7); 36 assert(v1[ 8] == 8); 37 assert(v1[ 9] == 9); 38 assert(v1[10] == -9); 39 assert(v1[11] == 11); 40 assert(v1[12] == 12); 41 assert(v1[13] == -11); 42 assert(v1[14] == 14); 43 assert(v1[15] == 15); 44 } 45 // Test return value of assignment. 46 { 47 int a1[] = {0, 1, 2}; 48 std::valarray<int> v1(a1, 3); 49 std::slice_array<int> s1 = v1[std::slice(1, 1, 1)]; 50 std::slice_array<int> s2 = v1[std::slice(0, 1, 1)]; 51 std::slice_array<int> const & s3 = (s1 = s2); 52 assert(&s1 == &s3); 53 } 54 } 55
