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libcxx initial import

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2010-05-11 19:42:16 +00:00
commit bc8d3f97eb
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73
test/numerics/rand/rand.eng/rand.eng.lcong/discard.pass.cpp Normal file
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//===----------------------------------------------------------------------===//
//
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <random>
// template <class UIntType, UIntType a, UIntType c, UIntType m>
// class linear_congruential_engine;
// void discard(unsigned long long z);
#include <random>
#include <cassert>
template <class T>
void
rand0()
{
typedef std::linear_congruential_engine<T, 16807, 0, 2147483647> E;
E e;
e.discard(9999);
assert(e() == 1043618065);
}
template <class T>
void
rand()
{
typedef std::linear_congruential_engine<T, 48271, 0, 2147483647> E;
E e;
e.discard(9999);
assert(e() == 399268537);
}
template <class T>
void
other()
{
typedef std::linear_congruential_engine<T, 48271, 123465789, 2147483647> E;
E e1;
E e2;
assert(e1 == e2);
e1.discard(1);
assert(e1 != e2);
e2();
assert(e1 == e2);
e1.discard(3);
assert(e1 != e2);
e2();
e2();
e2();
assert(e1 == e2);
}
int main()
{
rand0<unsigned int>();
rand0<unsigned long>();
rand0<unsigned long long>();
rand<unsigned int>();
rand<unsigned long>();
rand<unsigned long long>();
other<unsigned int>();
other<unsigned long>();
other<unsigned long long>();
}