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 // template<class InputIterator> 16 // piecewise_linear_distribution(InputIteratorB firstB, 17 // InputIteratorB lastB, 18 // InputIteratorW firstW); 19 20 #include <random> 21 #include <cassert> 22 23 int main() 24 { 25 { 26 typedef std::piecewise_linear_distribution<> D; 27 double b[] = {10}; 28 double p[] = {12}; 29 D d(b, b, p); 30 std::vector<double> iv = d.intervals(); 31 assert(iv.size() == 2); 32 assert(iv[0] == 0); 33 assert(iv[1] == 1); 34 std::vector<double> dn = d.densities(); 35 assert(dn.size() == 2); 36 assert(dn[0] == 1); 37 assert(dn[1] == 1); 38 } 39 { 40 typedef std::piecewise_linear_distribution<> D; 41 double b[] = {10}; 42 double p[] = {12}; 43 D d(b, b+1, p); 44 std::vector<double> iv = d.intervals(); 45 assert(iv.size() == 2); 46 assert(iv[0] == 0); 47 assert(iv[1] == 1); 48 std::vector<double> dn = d.densities(); 49 assert(dn.size() == 2); 50 assert(dn[0] == 1); 51 assert(dn[1] == 1); 52 } 53 { 54 typedef std::piecewise_linear_distribution<> D; 55 double b[] = {10, 15}; 56 double p[] = {20, 20}; 57 D d(b, b+2, p); 58 std::vector<double> iv = d.intervals(); 59 assert(iv.size() == 2); 60 assert(iv[0] == 10); 61 assert(iv[1] == 15); 62 std::vector<double> dn = d.densities(); 63 assert(dn.size() == 2); 64 assert(dn[0] == 1/5.); 65 assert(dn[1] == 1/5.); 66 } 67 { 68 typedef std::piecewise_linear_distribution<> D; 69 double b[] = {10, 15, 16}; 70 double p[] = {.25, .75, .25}; 71 D d(b, b+3, p); 72 std::vector<double> iv = d.intervals(); 73 assert(iv.size() == 3); 74 assert(iv[0] == 10); 75 assert(iv[1] == 15); 76 assert(iv[2] == 16); 77 std::vector<double> dn = d.densities(); 78 assert(dn.size() == 3); 79 assert(dn[0] == .25/3); 80 assert(dn[1] == .75/3); 81 assert(dn[2] == .25/3); 82 } 83 { 84 typedef std::piecewise_linear_distribution<> D; 85 double b[] = {10, 14, 16, 17}; 86 double p[] = {0, 1, 1, 0}; 87 D d(b, b+4, p); 88 std::vector<double> iv = d.intervals(); 89 assert(iv.size() == 4); 90 assert(iv[0] == 10); 91 assert(iv[1] == 14); 92 assert(iv[2] == 16); 93 assert(iv[3] == 17); 94 std::vector<double> dn = d.densities(); 95 assert(dn.size() == 4); 96 assert(dn[0] == 0); 97 assert(dn[1] == 1/4.5); 98 assert(dn[2] == 1/4.5); 99 assert(dn[3] == 0); 100 } 101 } 102
