1*103e46e4SHarish Mahendrakar // Copyright (c) 2016 The WebM project authors. All Rights Reserved. 2*103e46e4SHarish Mahendrakar // 3*103e46e4SHarish Mahendrakar // Use of this source code is governed by a BSD-style license 4*103e46e4SHarish Mahendrakar // that can be found in the LICENSE file in the root of the source 5*103e46e4SHarish Mahendrakar // tree. An additional intellectual property rights grant can be found 6*103e46e4SHarish Mahendrakar // in the file PATENTS. All contributing project authors may 7*103e46e4SHarish Mahendrakar // be found in the AUTHORS file in the root of the source tree. 8*103e46e4SHarish Mahendrakar #ifndef SRC_BIT_UTILS_H_ 9*103e46e4SHarish Mahendrakar #define SRC_BIT_UTILS_H_ 10*103e46e4SHarish Mahendrakar 11*103e46e4SHarish Mahendrakar #include <cstdint> 12*103e46e4SHarish Mahendrakar 13*103e46e4SHarish Mahendrakar namespace webm { 14*103e46e4SHarish Mahendrakar 15*103e46e4SHarish Mahendrakar // Counts the number of leading zero bits. 16*103e46e4SHarish Mahendrakar // For example: 17*103e46e4SHarish Mahendrakar // assert(8 == CountLeadingZeros(0x00)); 18*103e46e4SHarish Mahendrakar // assert(4 == CountLeadingZeros(0x0f)); 19*103e46e4SHarish Mahendrakar // assert(0 == CountLeadingZeros(0xf0)); 20*103e46e4SHarish Mahendrakar std::uint8_t CountLeadingZeros(std::uint8_t value); 21*103e46e4SHarish Mahendrakar 22*103e46e4SHarish Mahendrakar } // namespace webm 23*103e46e4SHarish Mahendrakar 24*103e46e4SHarish Mahendrakar #endif // SRC_BIT_UTILS_H_ 25