#endif /* TIOCGWINSZ */
}
+/* Return a random number between 0 and MAX-1, inclusive.
+
+ If MAX is greater than the value of RAND_MAX+1 on the system, the
+ returned value will be in the range [0, RAND_MAX]. This may be
+ fixed in a future release.
+
+ The random number generator is seeded automatically the first time
+ it is called.
+
+ This uses rand() for portability. It has been suggested that
+ random() offers better randomness, but this is not required for
+ Wget, so I chose to go for simplicity and use rand
+ unconditionally. */
+
+int
+random_number (int max)
+{
+ static int seeded;
+ double bounded;
+ int rnd;
+
+ if (!seeded)
+ {
+ srand (time (NULL));
+ seeded = 1;
+ }
+ rnd = rand ();
+
+ /* On systems that don't define RAND_MAX, assume it to be 2**15 - 1,
+ and enforce that assumption by masking other bits. */
+#ifndef RAND_MAX
+# define RAND_MAX 32767
+ rnd &= RAND_MAX;
+#endif
+
+ /* This is equivalent to rand() % max, but uses the high-order bits
+ for better randomness on architecture where rand() is implemented
+ using a simple congruential generator. */
+
+ bounded = (double)max * rnd / (RAND_MAX + 1.0);
+ return (int)bounded;
+}
+
#if 0
/* A debugging function for checking whether an MD5 library works. */