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Annotation of 43BSDTahoe/usr.lib/lib2648/mat.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  */
                      6: 
                      7: #ifndef lint
                      8: static char sccsid[] = "@(#)mat.c      5.1 (Berkeley) 4/30/85";
                      9: #endif not lint
                     10: 
                     11: /*
                     12:  * mat: retrieve the value in m[r, c].
                     13:  * rows and cols are the size of the matrix in all these routines.
                     14:  */
                     15: 
                     16: #include "bit.h"
                     17: 
                     18: int
                     19: mat(m, rows, cols, r, c)
                     20: register bitmat m;
                     21: register int c;
                     22: int rows, cols, r;
                     23: {
                     24:        register int thisbyte;
                     25: 
                     26:        thisbyte = m[r*((cols+7)>>3) + (c>>3)] & 0xff;
                     27:        thisbyte &= 0x80 >> (c&7);
                     28:        return (thisbyte != 0);
                     29: }

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