re2/bitmap256.h

Copyright 2016 The RE2 Authors. All Rights Reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. ifndef RE2_BITMAP256_H_ define RE2_BITMAP256_H_ ifdef _MSC_VER include <intrin.h> endif

// Source: https://github.com/infiniflow/ragflow | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
// Copyright 2016 The RE2 Authors.  All Rights Reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#ifndef RE2_BITMAP256_H_
#define RE2_BITMAP256_H_

#ifdef _MSC_VER
#include <intrin.h>
#endif
#include <stdint.h>
#include <string.h>

#include "util/logging.h"

namespace re2 {

class Bitmap256 {
public:
    Bitmap256() { Clear(); }

    // Clears all of the bits.
    void Clear() { memset(words_, 0, sizeof words_); }

    // Tests the bit with index c.
    bool Test(int c) const {
        DCHECK_GE(c, 0);
        DCHECK_LE(c

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