diff options
Diffstat (limited to 'usr.sbin/xntpd/lib/ranny.c')
| -rw-r--r-- | usr.sbin/xntpd/lib/ranny.c | 40 |
1 files changed, 12 insertions, 28 deletions
diff --git a/usr.sbin/xntpd/lib/ranny.c b/usr.sbin/xntpd/lib/ranny.c index 2a47e03..3fe7b22 100644 --- a/usr.sbin/xntpd/lib/ranny.c +++ b/usr.sbin/xntpd/lib/ranny.c @@ -1,4 +1,4 @@ -/* ranny.c,v 3.1 1993/07/06 01:08:43 jbj Exp +/* * Random number generator is: * * Copyright 1988 by Rayan S. Zachariassen, all rights reserved. @@ -20,9 +20,9 @@ extern time_t time P((time_t *loc)); * 55 random numbers, not all even. Note we don't initialize ran_y * directly since I have had thoughts of putting this in an EPROM */ -static U_LONG ran_y[55]; +static time_t ran_y[55]; -static U_LONG init_ran_y[55] = { +static time_t init_ran_y[55] = { 1860909544, 231033423, 437666411, 1349655137, 2014584962, 504613712, 656256107, 1246027206, 573713775, 643466871, 540235388, 1630565153, 443649364, 729302839, 1933991552, @@ -41,38 +41,22 @@ static int ran_k; /* - * ranp2 - return a random integer in the range 0 .. (1<<m)-1 + * ranp2 - return a random integer in the range 0 .. (1 << m) - 1 */ -U_LONG +u_long ranp2(m) int m; { - U_LONG r; - - ran_y[ran_k] += ran_y[ran_j]; /* overflow does a mod */ - r = ran_y[ran_k]; - if (ran_k-- == 0) ran_k = 54; - if (ran_j-- == 0) ran_j = 54; - return (r & ((1<<m)-1)); -} - -#ifdef notdef -/* - * ranny - return a random integer in the range 0 .. m-1 - */ -U_LONG -ranny(m) - u_int m; -{ - unsigned LONG r; + time_t r; ran_y[ran_k] += ran_y[ran_j]; /* overflow does a mod */ r = ran_y[ran_k]; - if (ran_k-- == 0) ran_k = 54; - if (ran_j-- == 0) ran_j = 54; - return (r % m); + if (ran_k-- == 0) + ran_k = 54; + if (ran_j-- == 0) + ran_j = 54; + return (u_long)(r & ((1 << m ) - 1)); } -#endif /* notdef */ /* * init_random - do initialization of random number routine @@ -90,7 +74,7 @@ init_random() * Randomize the seed array some more. The time of day * should be initialized by now. */ - now = (time_t)(time((time_t *)0))|01; + now = time((time_t *)0) | 01; for (i = 0; i < 55; ++i) ran_y[i] = now * init_ran_y[i]; /* overflow does a mod */ |
