OpenSolaris Launch

1 files changed, 37 insertions, 0 deletions

diff --git a/usr/src/lib/libresolv2/common/dnssafe/biglen.c b/usr/src/lib/libresolv2/common/dnssafe/biglen.c
new file mode 100644
index 0000000000..8f5ffb0a32
--- /dev/null
+++ b/usr/src/lib/libresolv2/common/dnssafe/biglen.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/* 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+   unpublished work protected as such under copyright law.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 "port_before.h"
+#include "global.h"
+#include "bigmath.h"
+#include "port_after.h"
+
+unsigned int BigLen (a, n)
+UINT2 *a;
+unsigned int n;
+{
+  UINT2 signWord = ((a[n-1] & 0x8000) ? ~0 : 0);
+  int i, j;
+  unsigned int k;
+
+  for (i = n-1; i >= 0 && a[i] == signWord; i--);
+  if (i == -1)
+    return (1);  /* len of 0 or -1 */
+
+  for (j = 16, k = 0x8000; 
+       j >= 0 && 0 == (k & (signWord ^ a[i])); 
+       j--, k >>= 1);
+  return (16 * i + j);
+}