+++ /dev/null
-/*
- * Because the standard library random number
- * functions are not availble at the kernel level
- * I wrote this simple random number generator.
- *
- * It uses the multiplicative congruential method.
- * See pg 263 of Banks and Carson "Discrete-Event
- * System Simulation".
- *
- */
-
-#include "random.h"
-
-static unsigned x0=123457; /* seed */
-static unsigned a=16807; /* constant multiplier */
-static unsigned c=0; /* increment */
-static unsigned m=2147483647; /* modulus */
-
-/*
- * Set the seed to the argument.
- */
-
-void srand(unsigned i)
-{
- x0 = i;
-}
-
-
-/*
- * Use Linear Congruential Method to Generate
- * sequence. Return either int or float...
- */
-
-unsigned rand(void)
-{
- unsigned tmpseed;
-
- tmpseed = (a*x0+c) % m;
- x0 = tmpseed;
- return (unsigned) x0;
-}
-
-
-
-float frand(void)
-{
- unsigned tmpseed;
-
- tmpseed = (a*x0+c) % m;
- x0 = tmpseed;
- return (x0/(float)m);
-}