Howard Hinnant | 5430540 | 2010-05-25 00:27:34 +0000 | [diff] [blame] | 1 | //===----------------------------------------------------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. 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 | { |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame^] | 30 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | 5430540 | 2010-05-25 00:27:34 +0000 | [diff] [blame] | 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 | } |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame^] | 81 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | 5430540 | 2010-05-25 00:27:34 +0000 | [diff] [blame] | 82 | } |