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genpar.c revision 1.6
      1  1.6  chopps /*	$NetBSD: genpar.c,v 1.6 1995/02/16 21:57:31 chopps Exp $	*/
      2  1.6  chopps 
      3  1.6  chopps /*
      4  1.6  chopps  * Copyright (c) 1993 Markus Wild
      5  1.6  chopps  * All rights reserved.
      6  1.6  chopps  *
      7  1.6  chopps  * Redistribution and use in source and binary forms, with or without
      8  1.6  chopps  * modification, are permitted provided that the following conditions
      9  1.6  chopps  * are met:
     10  1.6  chopps  * 1. Redistributions of source code must retain the above copyright
     11  1.6  chopps  *    notice, this list of conditions and the following disclaimer.
     12  1.6  chopps  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.6  chopps  *    notice, this list of conditions and the following disclaimer in the
     14  1.6  chopps  *    documentation and/or other materials provided with the distribution.
     15  1.6  chopps  * 3. All advertising materials mentioning features or use of this software
     16  1.6  chopps  *    must display the following acknowledgement:
     17  1.6  chopps  *      This product includes software developed by Markus Wild.
     18  1.6  chopps  * 4. The name of the author may not be used to endorse or promote products
     19  1.6  chopps  *    derived from this software without specific prior written permission
     20  1.6  chopps  *
     21  1.6  chopps  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  1.6  chopps  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  1.6  chopps  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  1.6  chopps  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  1.6  chopps  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  1.6  chopps  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  1.6  chopps  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  1.6  chopps  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  1.6  chopps  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  1.6  chopps  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  1.6  chopps  */
     32  1.4  chopps 
     33  1.1      mw #define bset(i,b) ((i & (1<<b))?1:0)
     34  1.1      mw 
     35  1.1      mw main()
     36  1.1      mw {
     37  1.6  chopps 	int i;
     38  1.6  chopps 	unsigned char par;
     39  1.1      mw 
     40  1.6  chopps 	printf("u_char even_parity[] = {\n\t");
     41  1.6  chopps 	for (i = 0; i < 0x80; i++) {
     42  1.6  chopps 		par = bset(i,0) + bset(i,1) + bset(i,2) + bset(i,3)
     43  1.6  chopps 		    + bset(i,4) + bset(i,5) + bset(i,6) + bset(i,7);
     44  1.6  chopps 		printf("%2d, ", par & 1);
     45  1.6  chopps 		if ((i & 15) == 15)
     46  1.6  chopps 			printf("\n\t");
     47  1.6  chopps 	}
     48  1.6  chopps 	printf("};\n");
     49  1.1      mw }
     50