+ * Revision 1.6 2002/01/13 13:42:53 mdw
+ * More efficient Rabin-Miller test: with random witnesses, skip redundant
+ * Montgomerization. (Being bijective, it can't affect the distribution.)
+ *
+ * Revision 1.5 2000/07/09 21:32:16 mdw
+ * rabin_test: Correct error in comment.
+ *
+ * Revision 1.4 2000/06/17 11:52:48 mdw
+ * Typesetting fix.
+ *
+ * Revision 1.3 1999/12/22 15:50:29 mdw
+ * Reworking for new prime-search system. Add function for working out how
+ * many iterations to use for a particular number.
+ *
+ * Revision 1.2 1999/12/10 23:29:48 mdw
+ * Change header file guard names.
+ *