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// <random> 13 14// template<class RealType = double> 15// class piecewise_linear_distribution 16 17// param_type(initializer_list<result_type> bl, UnaryOperation fw); 18 19#include <random> 20#include <cassert> 21 22double f(double x) 23{ 24 return x*2; 25} 26 27int main() 28{ 29 { 30 typedef std::piecewise_linear_distribution<> D; 31 typedef D::param_type P; 32 P pa({}, f); 33 std::vector<double> iv = pa.intervals(); 34 assert(iv.size() == 2); 35 assert(iv[0] == 0); 36 assert(iv[1] == 1); 37 std::vector<double> dn = pa.densities(); 38 assert(dn.size() == 2); 39 assert(dn[0] == 1); 40 assert(dn[1] == 1); 41 } 42 { 43 typedef std::piecewise_linear_distribution<> D; 44 typedef D::param_type P; 45 P pa({12}, f); 46 std::vector<double> iv = pa.intervals(); 47 assert(iv.size() == 2); 48 assert(iv[0] == 0); 49 assert(iv[1] == 1); 50 std::vector<double> dn = pa.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 typedef D::param_type P; 58 P pa({10, 12}, f); 59 std::vector<double> iv = pa.intervals(); 60 assert(iv.size() == 2); 61 assert(iv[0] == 10); 62 assert(iv[1] == 12); 63 std::vector<double> dn = pa.densities(); 64 assert(dn.size() == 2); 65 assert(dn[0] == 20./44); 66 assert(dn[1] == 24./44); 67 } 68 { 69 typedef std::piecewise_linear_distribution<> D; 70 typedef D::param_type P; 71 P pa({6, 10, 14}, f); 72 std::vector<double> iv = pa.intervals(); 73 assert(iv.size() == 3); 74 assert(iv[0] == 6); 75 assert(iv[1] == 10); 76 assert(iv[2] == 14); 77 std::vector<double> dn = pa.densities(); 78 assert(dn.size() == 3); 79 assert(dn[0] == 0.075); 80 assert(dn[1] == 0.125); 81 assert(dn[2] == 0.175); 82 } 83} 84