| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <random> |
| |
| // template<class IntType = int> |
| // class binomial_distribution |
| |
| // template<class _URNG> result_type operator()(_URNG& g, const param_type& parm); |
| |
| #include <random> |
| #include <cassert> |
| |
| int main() |
| { |
| { |
| typedef std::binomial_distribution<> D; |
| typedef D::param_type P; |
| typedef std::minstd_rand0 G; |
| G g; |
| D d(16, .75); |
| P p(16, .25); |
| int count = 0; |
| int r = 0; |
| for (int i = 0; i < 100; ++i) |
| { |
| D::result_type u = d(g, p); |
| r += u; |
| } |
| assert(int(r/100. + .5) == 4); |
| } |
| { |
| typedef std::binomial_distribution<> D; |
| typedef D::param_type P; |
| typedef std::minstd_rand0 G; |
| G g; |
| D d(16, .75); |
| P p(16, .5); |
| int count = 0; |
| int r = 0; |
| for (int i = 0; i < 100; ++i) |
| { |
| D::result_type u = d(g, p); |
| r += u; |
| } |
| assert(int(r/100. + .5) == 8); |
| } |
| { |
| typedef std::binomial_distribution<> D; |
| typedef D::param_type P; |
| typedef std::minstd_rand0 G; |
| G g; |
| D d(16, .75); |
| P p(16, .75); |
| int count = 0; |
| int r = 0; |
| for (int i = 0; i < 100; ++i) |
| { |
| D::result_type u = d(g, p); |
| r += u; |
| } |
| assert(int(r/100. + .5) == 12); |
| } |
| } |