6046aced82
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111755 91177308-0d34-0410-b5e6-96231b3b80d8
69 lines
1.7 KiB
C++
69 lines
1.7 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 distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <deque>
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// reference operator[](size_type __i);
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// const_reference operator[](size_type __i) const;
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//
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// reference at(size_type __i);
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// const_reference at(size_type __i) const;
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//
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// reference front();
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// const_reference front() const;
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//
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// reference back();
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// const_reference back() const;
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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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int main()
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{
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{
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std::deque<int> c = make(10);
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for (unsigned i = 0; i < 10; ++i)
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assert(c[i] == i);
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for (unsigned i = 0; i < 10; ++i)
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assert(c.at(i) == i);
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assert(c.front() == 0);
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assert(c.back() == 9);
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}
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{
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const std::deque<int> c = make(10);
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for (unsigned i = 0; i < 10; ++i)
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assert(c[i] == i);
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for (unsigned i = 0; i < 10; ++i)
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assert(c.at(i) == i);
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assert(c.front() == 0);
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assert(c.back() == 9);
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}
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}
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