Howard Hinnant | d6d1171 | 2010-05-20 15:11:46 +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_constant_distribution |
| 14 | |
| 15 | // param_type(initializer_list<result_type> bl, UnaryOperation fw); |
| 16 | |
| 17 | #include <random> |
| 18 | #include <cassert> |
| 19 | |
| 20 | double f(double x) |
| 21 | { |
| 22 | return x*2; |
| 23 | } |
| 24 | |
| 25 | int main() |
| 26 | { |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame^] | 27 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | d6d1171 | 2010-05-20 15:11:46 +0000 | [diff] [blame] | 28 | { |
| 29 | typedef std::piecewise_constant_distribution<> D; |
| 30 | typedef D::param_type P; |
| 31 | P pa({}, f); |
| 32 | std::vector<double> iv = pa.intervals(); |
| 33 | assert(iv.size() == 2); |
| 34 | assert(iv[0] == 0); |
| 35 | assert(iv[1] == 1); |
| 36 | std::vector<double> dn = pa.densities(); |
| 37 | assert(dn.size() == 1); |
| 38 | assert(dn[0] == 1); |
| 39 | } |
| 40 | { |
| 41 | typedef std::piecewise_constant_distribution<> D; |
| 42 | typedef D::param_type P; |
| 43 | P pa({12}, f); |
| 44 | std::vector<double> iv = pa.intervals(); |
| 45 | assert(iv.size() == 2); |
| 46 | assert(iv[0] == 0); |
| 47 | assert(iv[1] == 1); |
| 48 | std::vector<double> dn = pa.densities(); |
| 49 | assert(dn.size() == 1); |
| 50 | assert(dn[0] == 1); |
| 51 | } |
| 52 | { |
| 53 | typedef std::piecewise_constant_distribution<> D; |
| 54 | typedef D::param_type P; |
| 55 | P pa({12, 14}, f); |
| 56 | std::vector<double> iv = pa.intervals(); |
| 57 | assert(iv.size() == 2); |
| 58 | assert(iv[0] == 12); |
| 59 | assert(iv[1] == 14); |
| 60 | std::vector<double> dn = pa.densities(); |
| 61 | assert(dn.size() == 1); |
| 62 | assert(dn[0] == 0.5); |
| 63 | } |
| 64 | { |
| 65 | typedef std::piecewise_constant_distribution<> D; |
| 66 | typedef D::param_type P; |
| 67 | P pa({5.5, 7.5, 11.5}, f); |
| 68 | std::vector<double> iv = pa.intervals(); |
| 69 | assert(iv.size() == 3); |
| 70 | assert(iv[0] == 5.5); |
| 71 | assert(iv[1] == 7.5); |
| 72 | assert(iv[2] == 11.5); |
| 73 | std::vector<double> dn = pa.densities(); |
| 74 | assert(dn.size() == 2); |
| 75 | assert(dn[0] == 0.203125); |
| 76 | assert(dn[1] == 0.1484375); |
| 77 | } |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame^] | 78 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | d6d1171 | 2010-05-20 15:11:46 +0000 | [diff] [blame] | 79 | } |