--- /dev/null
+//------------------------------------------------------------------------------\r
+//\r
+// Copyright (c) 2019, Pete Batard. All rights reserved.\r
+//\r
+// SPDX-License-Identifier: BSD-2-Clause-Patent\r
+//\r
+//------------------------------------------------------------------------------\r
+\r
+#if defined(_M_ARM64)\r
+typedef unsigned __int64 size_t;\r
+#else\r
+typedef unsigned __int32 size_t;\r
+#endif\r
+\r
+int memcmp(void *, void *, size_t);\r
+#pragma intrinsic(memcmp)\r
+#pragma function(memcmp)\r
+int memcmp(const void *s1, const void *s2, size_t n)\r
+{\r
+ unsigned char const *t1 = s1;\r
+ unsigned char const *t2 = s2;\r
+\r
+ while (n--) {\r
+ if (*t1 != *t2)\r
+ return (int)*t1 - (int)*t2;\r
+ t1++;\r
+ t2++;\r
+ }\r
+\r
+ return 0;\r
+}\r