/** @file | |
Integer division worker functions for Ia32. | |
Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#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 ( | |
(UINT64)(Dividend >= 0 ? Dividend : -Dividend), | |
(UINT64)(Divisor >= 0 ? Divisor : -Divisor), | |
(UINT64 *)Remainder | |
); | |
if ((Remainder != NULL) && (Dividend < 0)) { | |
*Remainder = -*Remainder; | |
} | |
return (Dividend ^ Divisor) >= 0 ? Quot : -Quot; | |
} |