| Server IP : 127.0.1.1 / Your IP : 216.73.216.172 Web Server : Apache/2.4.52 (Ubuntu) System : Linux bahcrestlinepropertiesllc 5.15.0-113-generic #123-Ubuntu SMP Mon Jun 10 08:16:17 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/src/linux-headers-5.15.0-153/include/media/ |
Upload File : |
/* * dvb-math provides some complex fixed-point math * operations shared between the dvb related stuff * * Copyright (C) 2006 Christoph Pfister (christophpfister@gmail.com) * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. */ #ifndef __DVB_MATH_H #define __DVB_MATH_H #include <linux/types.h> /** * intlog2 - computes log2 of a value; the result is shifted left by 24 bits * * @value: The value (must be != 0) * * to use rational values you can use the following method: * * intlog2(value) = intlog2(value * 2^x) - x * 2^24 * * Some usecase examples: * * intlog2(8) will give 3 << 24 = 3 * 2^24 * * intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24 * * intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24 * * * return: log2(value) * 2^24 */ extern unsigned int intlog2(u32 value); /** * intlog10 - computes log10 of a value; the result is shifted left by 24 bits * * @value: The value (must be != 0) * * to use rational values you can use the following method: * * intlog10(value) = intlog10(value * 10^x) - x * 2^24 * * An usecase example: * * intlog10(1000) will give 3 << 24 = 3 * 2^24 * * due to the implementation intlog10(1000) might be not exactly 3 * 2^24 * * look at intlog2 for similar examples * * return: log10(value) * 2^24 */ extern unsigned int intlog10(u32 value); #endif