/* $NetBSD: sbc_crc.c,v 1.3 2017/01/30 15:56:44 christos Exp $ */

/*-
* Copyright (c) 2015 Nathanial Sloss <[email protected]>
* All rights reserved.
*
*              This software is dedicated to the memory of -
*         Baron James Anlezark (Barry) - 1 Jan 1949 - 13 May 2012.
*
*              Barry was a man who loved his music.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <stdio.h>

int
main(void)
{
       unsigned int j, i, k, numbits, data;

       printf("/* sbc_crc.h - Automatically generated by sbc_crc.c. */\n\n");

       /* The CRC-8 polynomial this uses is 0x11D */

       numbits = 8;
       for (k = 0; k < 2; k++) {
               printf("static const uint8_t sbc_crc%u[256] = {\n\t", numbits);
               for (i = 0; i < 256; i++) {
                       data = i;

                       for (j = 0; j < numbits; j++) {
                               if (data & 0x80) {
                                       data <<= 1;
                                       data ^= 0x1d;
                               } else
                                       data <<= 1;
                       }

                       if (i % 8 == 0 && i != 0)
                               printf("\n\t");

                       printf("0x%02x, ", data & 0xff);
               }
               printf("\n};\n\n");

               numbits /= 2;
       }
       return 0;
}