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 // <random> 11 12 // template<class RealType = double> 13 // class piecewise_linear_distribution 14 15 // piecewise_linear_distribution(initializer_list<result_type> bl, 16 // UnaryOperation fw); 17 18 #include <iostream> 19 20 #include <random> 21 #include <cassert> 22 23 double f(double x) 24 { 25 return x*2; 26 } 27 28 int main() 29 { 30 #ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 31 { 32 typedef std::piecewise_linear_distribution<> D; 33 D d({}, f); 34 std::vector<double> iv = d.intervals(); 35 assert(iv.size() == 2); 36 assert(iv[0] == 0); 37 assert(iv[1] == 1); 38 std::vector<double> dn = d.densities(); 39 assert(dn.size() == 2); 40 assert(dn[0] == 1); 41 assert(dn[1] == 1); 42 } 43 { 44 typedef std::piecewise_linear_distribution<> D; 45 D d({12}, f); 46 std::vector<double> iv = d.intervals(); 47 assert(iv.size() == 2); 48 assert(iv[0] == 0); 49 assert(iv[1] == 1); 50 std::vector<double> dn = d.densities(); 51 assert(dn.size() == 2); 52 assert(dn[0] == 1); 53 assert(dn[1] == 1); 54 } 55 { 56 typedef std::piecewise_linear_distribution<> D; 57 D d({10, 12}, f); 58 std::vector<double> iv = d.intervals(); 59 assert(iv.size() == 2); 60 assert(iv[0] == 10); 61 assert(iv[1] == 12); 62 std::vector<double> dn = d.densities(); 63 assert(dn.size() == 2); 64 assert(dn[0] == 20./44); 65 assert(dn[1] == 24./44); 66 } 67 { 68 typedef std::piecewise_linear_distribution<> D; 69 D d({6, 10, 14}, f); 70 std::vector<double> iv = d.intervals(); 71 assert(iv.size() == 3); 72 assert(iv[0] == 6); 73 assert(iv[1] == 10); 74 assert(iv[2] == 14); 75 std::vector<double> dn = d.densities(); 76 assert(dn.size() == 3); 77 assert(dn[0] == 0.075); 78 assert(dn[1] == 0.125); 79 assert(dn[2] == 0.175); 80 } 81 #endif // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS 82 } 83
