/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. */ #ifndef lint static char sccsid[] = "@(#)mat.c 5.1 (Berkeley) 4/30/85"; #endif not lint /* * mat: retrieve the value in m[r, c]. * rows and cols are the size of the matrix in all these routines. */ #include "bit.h" int mat(m, rows, cols, r, c) register bitmat m; register int c; int rows, cols, r; { register int thisbyte; thisbyte = m[r*((cols+7)>>3) + (c>>3)] & 0xff; thisbyte &= 0x80 >> (c&7); return (thisbyte != 0); }