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 // void operator*= (const valarray<value_type>& v) const; 15 16 #include <valarray> 17 #include <cassert> 18 19 int main() 20 { 21 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; 22 int a2[] = {-1, -2, -3, -4, -5}; 23 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0])); 24 std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0])); 25 v1[std::slice(1, 5, 3)] *= v2; 26 assert(v1.size() == 16); 27 assert(v1[ 0] == 0); 28 assert(v1[ 1] == -1); 29 assert(v1[ 2] == 2); 30 assert(v1[ 3] == 3); 31 assert(v1[ 4] == -8); 32 assert(v1[ 5] == 5); 33 assert(v1[ 6] == 6); 34 assert(v1[ 7] == -21); 35 assert(v1[ 8] == 8); 36 assert(v1[ 9] == 9); 37 assert(v1[10] == -40); 38 assert(v1[11] == 11); 39 assert(v1[12] == 12); 40 assert(v1[13] == -65); 41 assert(v1[14] == 14); 42 assert(v1[15] == 15); 43 } 44
