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| -rw-r--r-- | MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c b/MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c new file mode 100644 index 0000000000..c5e894f287 --- /dev/null +++ b/MdePkg/Library/BaseLib/Ia32/DivS64x64Remainder.c @@ -0,0 +1,53 @@ +/** @file
+ Integer division worker functions for Ia32.
+
+ Copyright (c) 2006 - 2008, Intel Corporation<BR>
+ All rights reserved. This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "BaseLibInternals.h"
+
+/**
+ Worker function that Divides a 64-bit signed integer by a 64-bit signed integer and
+ generates a 64-bit signed result and a optional 64-bit signed remainder.
+
+ This function divides the 64-bit signed value Dividend by the 64-bit
+ signed value Divisor and generates a 64-bit signed quotient. If Remainder
+ is not NULL, then the 64-bit signed remainder is returned in Remainder.
+ This function returns the 64-bit signed quotient.
+
+ @param Dividend A 64-bit signed value.
+ @param Divisor A 64-bit signed value.
+ @param Remainder A pointer to a 64-bit signed value. This parameter is
+ optional and may be NULL.
+
+ @return Dividend / Divisor
+
+**/
+INT64
+EFIAPI
+InternalMathDivRemS64x64 (
+ IN INT64 Dividend,
+ IN INT64 Divisor,
+ OUT INT64 *Remainder OPTIONAL
+ )
+{
+ INT64 Quot;
+
+ Quot = InternalMathDivRemU64x64 (
+ Dividend >= 0 ? Dividend : -Dividend,
+ Divisor >= 0 ? Divisor : -Divisor,
+ (UINT64 *) Remainder
+ );
+ if (Remainder != NULL && Dividend < 0) {
+ *Remainder = -*Remainder;
+ }
+ return (Dividend ^ Divisor) >= 0 ? Quot : -Quot;
+}
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