48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2013-2013. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/container for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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//[doc_custom_small_vector
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#include <boost/container/small_vector.hpp>
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#include <boost/static_assert.hpp>
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//Make sure assertions are active
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#ifdef NDEBUG
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#undef NDEBUG
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#endif
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#include <cassert>
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int main ()
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{
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using namespace boost::container;
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//This option specifies the desired alignment for the internal value_type
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typedef small_vector_options< inplace_alignment<16u> >::type alignment_16_option_t;
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//Check 16 byte alignment option
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small_vector<int, 10, void, alignment_16_option_t > sv;
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assert(((std::size_t)sv.data() % 16u) == 0);
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//This option specifies that a vector will increase its capacity 50%
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//each time the previous capacity was exhausted.
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typedef small_vector_options< growth_factor<growth_factor_50> >::type growth_50_option_t;
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//Fill the vector until full capacity is reached
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small_vector<int, 10, void, growth_50_option_t > growth_50_vector(10, 0);
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const std::size_t old_cap = growth_50_vector.capacity();
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growth_50_vector.resize(old_cap);
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//Now insert an additional item and check the new buffer is 50% bigger
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growth_50_vector.push_back(1);
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assert(growth_50_vector.capacity() == old_cap*3/2);
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return 0;
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}
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//]
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