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Diffstat (limited to 'games/rogue/random.c')
| -rw-r--r-- | games/rogue/random.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/games/rogue/random.c b/games/rogue/random.c deleted file mode 100644 index 8105e65..0000000 --- a/games/rogue/random.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * Copyright (c) 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Timothy C. Stoehr. - * - * 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. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. - */ - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)random.c 8.1 (Berkeley) 5/31/93"; -#endif -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -#include "rogue.h" - -#if 0 -/* - * random.c - * - * This source herein may be modified and/or distributed by anybody who - * so desires, with the following restrictions: - * 1.) No portion of this notice shall be removed. - * 2.) Credit shall not be taken for the creation of this source. - * 3.) This code is not to be traded, sold, or used for personal - * gain or profit. - * - */ - -static long rntb[32] = { - 3, 0x9a319039, 0x32d9c024, 0x9b663182, 0x5da1f342, - 0xde3b81e0, 0xdf0a6fb5, 0xf103bc02, 0x48f340fb, 0x7449e56b, - 0xbeb1dbb0, 0xab5c5918, 0x946554fd, 0x8c2e680f, 0xeb3d799f, - 0xb11ee0b7, 0x2d436b86, 0xda672e2a, 0x1588ca88, 0xe369735d, - 0x904f35f7, 0xd7158fd6, 0x6fa6f051, 0x616e6b96, 0xac94efdc, - 0x36413f93, 0xc622c298, 0xf5a42ab8, 0x8a88d77b, 0xf5ad9d0e, - 0x8999220b, 0x27fb47b9 -}; - -static long *fptr = &rntb[4]; -static long *rptr = &rntb[1]; -static long *state = &rntb[1]; -static int rand_type = 3; -static int rand_deg = 31; -static int rand_sep = 3; -static long *end_ptr = &rntb[32]; - -srrandom(x) -int x; -{ - int i; - - state[0] = (long) x; - if (rand_type != 0) { - for (i = 1; i < rand_deg; i++) { - state[i] = 1103515245 * state[i - 1] + 12345; - } - fptr = &state[rand_sep]; - rptr = &state[0]; - for (i = 0; i < 10 * rand_deg; i++) { - (void) rrandom(); - } - } -} - -long -rrandom() -{ - long i; - - if (rand_type == 0) { - i = state[0] = (state[0]*1103515245 + 12345) & 0x7fffffff; - } else { - *fptr += *rptr; - i = (*fptr >> 1) & 0x7fffffff; - if (++fptr >= end_ptr) { - fptr = state; - ++rptr; - } else { - if (++rptr >= end_ptr) { - rptr = state; - } - } - } - return(i); -} -#endif - -get_rand(x, y) -int x, y; -{ - int r, t; - long lr; - - if (x > y) { - t = y; - y = x; - x = t; - } - lr = rrandom(); - lr &= (long) 0x00003fff; - r = (int) lr; - r = (r % ((y - x) + 1)) + x; - return(r); -} - -rand_percent(percentage) -int percentage; -{ - return(get_rand(1, 100) <= percentage); -} - -coin_toss() -{ - - return(((rrandom() & 01) ? 1 : 0)); -} |
