Include the ISC license from s2n-bignum's LICENSE file.

diff --git a/lib/libcrypto/bn/arch/amd64/word_clz.S b/lib/libcrypto/bn/arch/amd64/word_clz.S
index 6388b75..6b57d69 100644 (file)
--- a/lib/libcrypto/bn/arch/amd64/word_clz.S
+++ b/lib/libcrypto/bn/arch/amd64/word_clz.S
@@ -1,5 +1,16 @@
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0 OR ISC
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 // ----------------------------------------------------------------------------
 // Count leading zero bits in a single word