1 files changed, 36 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/MultS64x64.c b/roms/edk2/MdePkg/Library/BaseLib/MultS64x64.c
new file mode 100644
index 000000000..b5c745f7c
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/MultS64x64.c
@@ -0,0 +1,36 @@
+/** @file
+  Math worker functions.
+
+  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+
+#include "BaseLibInternals.h"
+
+/**
+  Multiplies a 64-bit signed integer by a 64-bit signed integer and generates a
+  64-bit signed result.
+
+  This function multiplies the 64-bit signed value Multiplicand by the 64-bit
+  signed value Multiplier and generates a 64-bit signed result. This 64-bit
+  signed result is returned.
+
+  @param  Multiplicand  A 64-bit signed value.
+  @param  Multiplier    A 64-bit signed value.
+
+  @return Multiplicand * Multiplier.
+
+**/
+INT64
+EFIAPI
+MultS64x64 (
+  IN      INT64                     Multiplicand,
+  IN      INT64                     Multiplier
+  )
+{
+  return (INT64)MultU64x64 ((UINT64) Multiplicand, (UINT64) Multiplier);
+}