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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/DivS64x64Remainder.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/DivS64x64Remainder.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/DivS64x64Remainder.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/DivS64x64Remainder.c new file mode 100644 index 0000000..d9df26e --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/DivS64x64Remainder.c @@ -0,0 +1,60 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +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. + + +Module Name: + + DivS64x64Remainder.c + +Abstract: + + Integer division worker functions for Ia32. + +--*/ + +#include "..\BaseLibInternal.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 unsigned value Dividend by the 64-bit + unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder + is not NULL, then the 64-bit unsigned remainder is returned in Remainder. + This function returns the 64-bit unsigned 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 +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; +} |