1 /* $NetBSD: sbc_crc.c,v 1.3 2017/01/30 15:56:44 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2015 Nathanial Sloss <nathanialsloss@yahoo.com.au> 5 * All rights reserved. 6 * 7 * This software is dedicated to the memory of - 8 * Baron James Anlezark (Barry) - 1 Jan 1949 - 13 May 2012. 9 * 10 * Barry was a man who loved his music. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <stdio.h> 35 36 int 37 main(void) 38 { 39 unsigned int j, i, k, numbits, data; 40 41 printf("/* sbc_crc.h - Automatically generated by sbc_crc.c. */\n\n"); 42 43 /* The CRC-8 polynomial this uses is 0x11D */ 44 45 numbits = 8; 46 for (k = 0; k < 2; k++) { 47 printf("static const uint8_t sbc_crc%u[256] = {\n\t", numbits); 48 for (i = 0; i < 256; i++) { 49 data = i; 50 51 for (j = 0; j < numbits; j++) { 52 if (data & 0x80) { 53 data <<= 1; 54 data ^= 0x1d; 55 } else 56 data <<= 1; 57 } 58 59 if (i % 8 == 0 && i != 0) 60 printf("\n\t"); 61 62 printf("0x%02x, ", data & 0xff); 63 } 64 printf("\n};\n\n"); 65 66 numbits /= 2; 67 } 68 return 0; 69 } 70