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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.
//
//===----------------------------------------------------------------------===//
// <deque>
// void push_front(const value_type& v);
#include <deque>
#include <cassert>
std::deque<int>
make(int size, int start = 0 )
{
const int b = 4096 / sizeof(int);
int init = 0;
if (start > 0)
{
init = (start+1) / b + ((start+1) % b != 0);
init *= b;
--init;
}
std::deque<int> c(init, 0);
for (int i = 0; i < init-start; ++i)
c.pop_back();
for (int i = 0; i < size; ++i)
c.push_back(i);
for (int i = 0; i < start; ++i)
c.pop_front();
return c;
};
void
test(std::deque<int>& c1, int x)
{
typedef std::deque<int> C;
typedef C::iterator I;
std::size_t c1_osize = c1.size();
c1.push_front(x);
assert(c1.size() == c1_osize + 1);
assert(distance(c1.begin(), c1.end()) == c1.size());
I i = c1.begin();
assert(*i == x);
++i;
for (int j = 0; j < c1_osize; ++j, ++i)
assert(*i == j);
}
void
testN(int start, int N)
{
typedef std::deque<int> C;
C c1 = make(N, start);
test(c1, -10);
}
int main()
{
int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
const int N = sizeof(rng)/sizeof(rng[0]);
for (int i = 0; i < N; ++i)
for (int j = 0; j < N; ++j)
testN(rng[i], rng[j]);
}
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