2 * magic.c - PPP Magic Number routines.
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46 #include <sys/types.h>
53 extern long mrand48 (void);
54 extern void srand48 (long);
57 * magic_init - Initialize the magic number generator.
59 * Attempts to compute a random number seed which will not repeat.
60 * The current method uses the current hostid, current process ID
61 * and current time, currently.
69 gettimeofday(&t, NULL);
70 seed = get_host_seed() ^ t.tv_sec ^ t.tv_usec ^ getpid();
75 * magic - Returns the next magic number.
80 return (u_int32_t) mrand48();
84 * random_bytes - Fill a buffer with random bytes.
87 random_bytes(unsigned char *buf, int len)
91 for (i = 0; i < len; ++i)
92 buf[i] = mrand48() >> 24;
97 * Substitute procedures for those systems which don't have
104 return (double)random() / (double)0x7fffffffL; /* 2**31-1 */
114 srand48(long seedval)
116 srandom((int)seedval);