diff options
| author | Warner Losh <imp@FreeBSD.org> | 2017-10-12 14:56:28 +0000 |
|---|---|---|
| committer | Warner Losh <imp@FreeBSD.org> | 2017-10-12 14:56:28 +0000 |
| commit | 4eb1313ff2ab43011d091b7560cd688c7838e142 (patch) | |
| tree | 52c1487244ff26dbe95f6afcaac77b591ff84ae4 /lib/libstand/random.c | |
| parent | 93f4c41f2807d5cbc4050afa47cd72b5ae282a6a (diff) | |
Notes
Diffstat (limited to 'lib/libstand/random.c')
| -rw-r--r-- | lib/libstand/random.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/lib/libstand/random.c b/lib/libstand/random.c deleted file mode 100644 index a4b4d50206427..0000000000000 --- a/lib/libstand/random.c +++ /dev/null @@ -1,70 +0,0 @@ -/*- - * Copyright (c) 1992, 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. 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. - * - * @(#)random.c 8.1 (Berkeley) 6/10/93 - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/types.h> - -static u_long randseed = 1; - -void -srandom(seed) - u_long seed; -{ - randseed = seed; -} - -/* - * Pseudo-random number generator for randomizing the profiling clock, - * and whatever else we might use it for. The result is uniform on - * [0, 2^31 - 1]. - */ -u_long -random() -{ - long x, hi, lo, t; - - /* - * Compute x[n + 1] = (7^5 * x[n]) mod (2^31 - 1). - * From "Random number generators: good ones are hard to find", - * Park and Miller, Communications of the ACM, vol. 31, no. 10, - * October 1988, p. 1195. - */ - x = randseed; - hi = x / 127773; - lo = x % 127773; - t = 16807 * lo - 2836 * hi; - if (t <= 0) - t += 0x7fffffff; - randseed = t; - return (t); -} |
