70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/* $NetBSD: sbc_crc.c,v 1.3 2017/01/30 15:56:44 christos Exp $ */
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/*-
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* Copyright (c) 2015 Nathanial Sloss <nathanialsloss@yahoo.com.au>
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* All rights reserved.
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*
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* This software is dedicated to the memory of -
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* Baron James Anlezark (Barry) - 1 Jan 1949 - 13 May 2012.
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*
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* Barry was a man who loved his music.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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int
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main(void)
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{
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unsigned int j, i, k, numbits, data;
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printf("/* sbc_crc.h - Automatically generated by sbc_crc.c. */\n\n");
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/* The CRC-8 polynomial this uses is 0x11D */
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numbits = 8;
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for (k = 0; k < 2; k++) {
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printf("static const uint8_t sbc_crc%u[256] = {\n\t", numbits);
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for (i = 0; i < 256; i++) {
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data = i;
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for (j = 0; j < numbits; j++) {
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if (data & 0x80) {
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data <<= 1;
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data ^= 0x1d;
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} else
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data <<= 1;
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}
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if (i % 8 == 0 && i != 0)
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printf("\n\t");
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printf("0x%02x, ", data & 0xff);
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}
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printf("\n};\n\n");
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numbits /= 2;
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}
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return 0;
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}
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