42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
// Copyright 2010 Google
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "base/bitmap.h"
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#include <algorithm>
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#include "base/basictypes.h"
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namespace operations_research {
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void Bitmap::Resize(uint32 size, bool fill) {
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const uint32 new_array_size = BitLength64(size);
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const uint32 old_max_size = max_size_;
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if (new_array_size <= array_size_) {
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max_size_ = size;
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} else {
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const uint32 old_array_size = array_size_;
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array_size_ = new_array_size;
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max_size_ = size;
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uint64* new_map = new uint64[array_size_];
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memcpy(new_map, map_, old_array_size * sizeof(*map_));
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delete [] map_;
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map_ = new_map;
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}
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// TODO(user) : optimize next loop.
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for (uint32 index = old_max_size; index < size; ++index) {
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Set(index, fill);
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}
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}
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} // namespace operations_research
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