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tests for [rand.dist.bern.bin]

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103612 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2010-05-12 13:33:11 +00:00
parent 9e52d5ab2b
commit 5f9b133e2c
18 changed files with 676 additions and 0 deletions
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72
test/numerics/rand/rand.dis/rand.dist.bern/rand.dist.bern.bin/eval_param.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// 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>
#include <iostream>
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);
}
}