| rand.c (110321) | rand.c (110421) |
|---|---|
| 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 23 unchanged lines hidden (view full) --- 32 * 33 * Posix rand_r function added May 1999 by Wes Peters <wes@softweyr.com>. 34 */ 35 36#if defined(LIBC_SCCS) && !defined(lint) 37static char sccsid[] = "@(#)rand.c 8.1 (Berkeley) 6/14/93"; 38#endif /* LIBC_SCCS and not lint */ 39#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 23 unchanged lines hidden (view full) --- 32 * 33 * Posix rand_r function added May 1999 by Wes Peters <wes@softweyr.com>. 34 */ 35 36#if defined(LIBC_SCCS) && !defined(lint) 37static char sccsid[] = "@(#)rand.c 8.1 (Berkeley) 6/14/93"; 38#endif /* LIBC_SCCS and not lint */ 39#include <sys/cdefs.h> |
| 40__FBSDID("$FreeBSD: head/lib/libc/stdlib/rand.c 110321 2003-02-04 11:24:08Z ache $"); | 40__FBSDID("$FreeBSD: head/lib/libc/stdlib/rand.c 110421 2003-02-05 21:25:50Z ache $"); |
| 41 42#include "namespace.h" 43#include <sys/time.h> /* for sranddev() */ 44#include <sys/types.h> 45#include <fcntl.h> /* for sranddev() */ 46#include <stdlib.h> 47#include <unistd.h> /* for sranddev() */ 48#include "un-namespace.h" --- 44 unchanged lines hidden (view full) --- 93 u_long val = (u_long) *ctx; 94 int r = do_rand(&val); 95 96 *ctx = (unsigned int) val; 97 return (r); 98} 99 100 | 41 42#include "namespace.h" 43#include <sys/time.h> /* for sranddev() */ 44#include <sys/types.h> 45#include <fcntl.h> /* for sranddev() */ 46#include <stdlib.h> 47#include <unistd.h> /* for sranddev() */ 48#include "un-namespace.h" --- 44 unchanged lines hidden (view full) --- 93 u_long val = (u_long) *ctx; 94 int r = do_rand(&val); 95 96 *ctx = (unsigned int) val; 97 return (r); 98} 99 100 |
| 101static u_long next = 1; | 101static u_long next = 892053144; /* after srand(1), NSHUFF counted */ |
| 102 103int 104rand() 105{ | 102 103int 104rand() 105{ |
| 106 return do_rand(&next); | 106 return (do_rand(&next)); |
| 107} 108 109void 110srand(seed) 111u_int seed; 112{ 113 int i; 114 115 next = seed; 116 for (i = 0; i < NSHUFF; i++) | 107} 108 109void 110srand(seed) 111u_int seed; 112{ 113 int i; 114 115 next = seed; 116 for (i = 0; i < NSHUFF; i++) |
| 117 (void)do_rand(&next); | 117 (void)rand(); |
| 118} 119 120 121/* 122 * sranddev: 123 * 124 * Many programs choose the seed value in a totally predictable manner. 125 * This often causes problems. We seed the generator using the much more --- 53 unchanged lines hidden --- | 118} 119 120 121/* 122 * sranddev: 123 * 124 * Many programs choose the seed value in a totally predictable manner. 125 * This often causes problems. We seed the generator using the much more --- 53 unchanged lines hidden --- |