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1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * Redistribution and use in source and binary forms are permitted ! 6: * provided that: (1) source distributions retain this entire copyright ! 7: * notice and comment, and (2) distributions including binaries display ! 8: * the following acknowledgement: ``This product includes software ! 9: * developed by the University of California, Berkeley and its contributors'' ! 10: * in the documentation or other materials provided with the distribution ! 11: * and in all advertising materials mentioning features or use of this ! 12: * software. Neither the name of the University nor the names of its ! 13: * contributors may be used to endorse or promote products derived ! 14: * from this software without specific prior written permission. ! 15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 18: */ ! 19: ! 20: #ifndef lint ! 21: static char sccsid[] = "@(#)roll.c 5.5 (Berkeley) 6/1/90"; ! 22: #endif /* not lint */ ! 23: ! 24: /* ! 25: * This routine rolls ndie nside-sided dice. ! 26: */ ! 27: ! 28: # define reg register ! 29: ! 30: # if !defined(vax) && !defined(tahoe) ! 31: # define MAXRAND 32767L ! 32: ! 33: roll(ndie, nsides) ! 34: int ndie, nsides; { ! 35: ! 36: reg long tot; ! 37: reg unsigned n, r; ! 38: ! 39: tot = 0; ! 40: n = ndie; ! 41: while (n--) ! 42: tot += rand(); ! 43: return (int) ((tot * (long) nsides) / ((long) MAXRAND + 1)) + ndie; ! 44: } ! 45: ! 46: # else ! 47: ! 48: roll(ndie, nsides) ! 49: reg int ndie, nsides; { ! 50: ! 51: reg int tot, r; ! 52: reg double num_sides; ! 53: ! 54: num_sides = nsides; ! 55: tot = 0; ! 56: while (ndie--) ! 57: tot += (r = rand()) * (num_sides / 017777777777) + 1; ! 58: return tot; ! 59: } ! 60: # endif
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