Libc-320.tar.gz

[apple/libc.git] / stdlib / rand.c

diff --git a/stdlib/rand.c b/stdlib/rand.c
deleted file mode 100644 (file)
index 42a5bd4..0000000
--- a/stdlib/rand.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/*-
- * Copyright (c) 1990, 1993
- *     The Regents of the University of California.  All rights reserved.
- *
- * 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.
- *
- * Posix rand_r function added May 1999 by Wes Peters <wes@softweyr.com>.
- *
- * $FreeBSD: src/lib/libc/stdlib/rand.c,v 1.2.2.1 2001/03/05 11:33:57 obrien Exp $
- */
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)rand.c     8.1 (Berkeley) 6/14/93";
-#endif /* LIBC_SCCS and not lint */
-
-#include <sys/types.h>
-#include <stdlib.h>
-
-#ifdef TEST
-#include <stdio.h>
-#endif /* TEST */
-
-static int
-do_rand(unsigned long *ctx)
-{
-       return ((*ctx = *ctx * 1103515245 + 12345) % ((u_long)RAND_MAX + 1));
-}
-
-
-int
-rand_r(unsigned int *ctx)
-{
-       u_long val = (u_long) *ctx;
-       *ctx = do_rand(&val);
-       return (int) *ctx;
-}
-
-
-static u_long next = 1;
-
-int
-rand()
-{
-       return do_rand(&next);
-}
-
-void
-srand(seed)
-u_int seed;
-{
-       next = seed;
-}
-
-#ifdef TEST
-
-main()
-{
-    int i;
-    unsigned myseed;
-
-    printf("seeding rand with 0x19610910: \n");
-    srand(0x19610910);
-
-    printf("generating three pseudo-random numbers:\n");
-    for (i = 0; i < 3; i++)
-    {
-       printf("next random number = %d\n", rand());
-    }
-
-    printf("generating the same sequence with rand_r:\n");
-    myseed = 0x19610910;
-    for (i = 0; i < 3; i++)
-    {
-       printf("next random number = %d\n", rand_r(&myseed));
-    }
-
-    return 0;
-}
-
-#endif /* TEST */
-