webm_parser/src/bit_utils.h

// Copyright (c) 2016 The WebM project authors. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS.  All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
#ifndef SRC_BIT_UTILS_H_
#define SRC_BIT_UTILS_H_

#include <cstdint>

namespace webm {

// Counts the number of leading zero bits.
// For example:
//   assert(8 == CountLeadingZeros(0x00));
//   assert(4 == CountLeadingZeros(0x0f));
//   assert(0 == CountLeadingZeros(0xf0));
std::uint8_t CountLeadingZeros(std::uint8_t value);

}  // namespace webm

#endif  // SRC_BIT_UTILS_H_