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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.
*/
#ifndef LATINIME_BLOOM_FILTER_H
#define LATINIME_BLOOM_FILTER_H
#include <stdint.h>
#include "defines.h"
namespace latinime {
// TODO: uint32_t position
static inline void setInFilter(uint8_t *filter, const int32_t position) {
const uint32_t bucket = static_cast<uint32_t>(position % BIGRAM_FILTER_MODULO);
filter[bucket >> 3] |= static_cast<uint8_t>(1 << (bucket & 0x7));
}
// TODO: uint32_t position
static inline bool isInFilter(const uint8_t *filter, const int32_t position) {
const uint32_t bucket = static_cast<uint32_t>(position % BIGRAM_FILTER_MODULO);
return filter[bucket >> 3] & static_cast<uint8_t>(1 << (bucket & 0x7));
}
} // namespace latinime
#endif // LATINIME_BLOOM_FILTER_H
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