1 files changed, 21 insertions, 0 deletions
diff --git a/lib/dns/sec/dnssafe/bigu.c b/lib/dns/sec/dnssafe/bigu.c
new file mode 100644
index 00000000..34c592a5
--- /dev/null
+++ b/lib/dns/sec/dnssafe/bigu.c
@@ -0,0 +1,21 @@
+/* Copyright (C) RSA Data Security, Inc. created 1986, 1996.  This is an
+   unpublished work protected as such under copyright law.  This work
+   contains proprietary, confidential, and trade secret information of
+   RSA Data Security, Inc.  Use, disclosure or reproduction without the
+   express written authorization of RSA Data Security, Inc. is
+   prohibited.
+ */
+
+#include "global.h"
+#include "bigmath.h"
+
+/* BigU (t) -- returns length u where floor (2**u/b) is used as scaled version
+     of (1/b) when modding out modulo b, and where (positive) integers to be
+     reduced are < 2**t; i.e. they are at most t bits in length.
+   Result is (t+1) rounded up if necessary to next multiple of 16.
+*/
+unsigned int BigU (t)
+unsigned int t;
+{
+  return (16 * (((t+1) + 15)/16)); 
+}