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bitmap.cc
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bitmap.cc
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// Copyright 2010-2018 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "ortools/base/bitmap.h"
#include <algorithm>
#include "ortools/base/basictypes.h"
namespace operations_research {
void Bitmap::Resize(uint32 size, bool fill) {
const uint32 new_array_size = internal::BitLength64(size);
const uint32 old_max_size = max_size_;
if (new_array_size <= array_size_) {
max_size_ = size;
} else {
const uint32 old_array_size = array_size_;
array_size_ = new_array_size;
max_size_ = size;
uint64* new_map = new uint64[array_size_];
memcpy(new_map, map_, old_array_size * sizeof(*map_));
delete[] map_;
map_ = new_map;
}
// TODO(user) : optimize next loop.
for (uint32 index = old_max_size; index < size; ++index) {
Set(index, fill);
}
}
} // namespace operations_research