b64f8b07c1
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <deque>
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// iterator erase(const_iterator f, const_iterator l)
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#include <deque>
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#include <cassert>
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std::deque<int>
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make(int size, int start = 0 )
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{
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const int b = 4096 / sizeof(int);
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int init = 0;
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if (start > 0)
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{
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init = (start+1) / b + ((start+1) % b != 0);
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init *= b;
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--init;
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}
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std::deque<int> c(init, 0);
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for (int i = 0; i < init-start; ++i)
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c.pop_back();
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for (int i = 0; i < size; ++i)
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c.push_back(i);
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for (int i = 0; i < start; ++i)
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c.pop_front();
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return c;
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};
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void
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test(int P, std::deque<int>& c1, int size)
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{
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typedef std::deque<int> C;
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typedef C::iterator I;
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assert(P + size <= c1.size());
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std::size_t c1_osize = c1.size();
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I i = c1.erase(c1.cbegin() + P, c1.cbegin() + (P + size));
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assert(i == c1.begin() + P);
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assert(c1.size() == c1_osize - size);
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assert(distance(c1.begin(), c1.end()) == c1.size());
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i = c1.begin();
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int j = 0;
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for (; j < P; ++j, ++i)
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assert(*i == j);
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for (j += size; j < c1_osize; ++j, ++i)
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assert(*i == j);
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}
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void
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testN(int start, int N)
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{
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typedef std::deque<int> C;
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int pstep = std::max(N / std::max(std::min(N, 10), 1), 1);
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for (int p = 0; p <= N; p += pstep)
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{
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int sstep = std::max((N - p) / std::max(std::min(N - p, 10), 1), 1);
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for (int s = 0; s <= N - p; s += sstep)
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{
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C c1 = make(N, start);
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test(p, c1, s);
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}
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}
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}
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int main()
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{
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int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2047, 2048, 2049};
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const int N = sizeof(rng)/sizeof(rng[0]);
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for (int i = 0; i < N; ++i)
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for (int j = 0; j < N; ++j)
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testN(rng[i], rng[j]);
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}
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