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- // Copyright 2003-2008 Jan Gaspar.
- // Copyright 2013 Paul A. Bristow. Added some Quickbook snippet markers.
- // Distributed under the Boost Software License, Version 1.0.
- // (See the accompanying file LICENSE_1_0.txt
- // or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
- //[circular_buffer_sum_example_1
- /*`This example shows several functions, including summing all valid values.
- */
- #include <boost/circular_buffer.hpp>
- #include <numeric>
- #include <assert.h>
- int main(int /*argc*/, char* /*argv*/[])
- {
- // Create a circular buffer of capacity 3.
- boost::circular_buffer<int> cb(3);
- assert(cb.capacity() == 3);
- // Check is empty.
- assert(cb.size() == 0);
- assert(cb.empty());
- // Insert some elements into the circular buffer.
- cb.push_back(1);
- cb.push_back(2);
- // Assertions to check push_backs have expected effect.
- assert(cb[0] == 1);
- assert(cb[1] == 2);
- assert(!cb.full());
- assert(cb.size() == 2);
- assert(cb.capacity() == 3);
- // Insert some other elements.
- cb.push_back(3);
- cb.push_back(4);
- // Evaluate the sum of all elements.
- int sum = std::accumulate(cb.begin(), cb.end(), 0);
- // Assertions to check state.
- assert(sum == 9);
- assert(cb[0] == 2);
- assert(cb[1] == 3);
- assert(cb[2] == 4);
- assert(*cb.begin() == 2);
- assert(cb.front() == 2);
- assert(cb.back() == 4);
- assert(cb.full());
- assert(cb.size() == 3);
- assert(cb.capacity() == 3);
- return 0;
- }
- //] [/circular_buffer_sum_example_1]
- /*
- There is no output from this example.
- */
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