/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
bigint.hxx
Abstract:
The BIG_INT class models a 64 bit signed integer.
This class is meant to be light and will occupy only 64 bits of space.
It should be manipulated exactly as an INT would be.
There will be no constructor or destructor. A BIG_INT will be
uninitialized until a value is assigned to it.
This implementation of BIG_INT uses the NT LARGE_INTEGER structure.
Author:
Norbert P. Kusters (norbertk) 8-Jul-91
--*/
#if !defined(BIG_INT_DEFN)
#define BIG_INT_DEFN
#include <ulib.hxx>
#if defined ( _AUTOCHECK_ )
#define IFSUTIL_EXPORT
#elif defined ( _IFSUTIL_MEMBER_ )
#define IFSUTIL_EXPORT __declspec(dllexport)
#else
#define IFSUTIL_EXPORT __declspec(dllimport)
#endif
DEFINE_POINTER_AND_REFERENCE_TYPES( LARGE_INTEGER );
DECLARE_CLASS( BIG_INT );
class BIG_INT {
public:
NONVIRTUAL
BIG_INT(
);
NONVIRTUAL
BIG_INT(
IN RCINT LowPart
);
NONVIRTUAL
BIG_INT(
IN RCUINT LowPart
);
NONVIRTUAL
BIG_INT(
IN RCSLONG LowPart
);
NONVIRTUAL
BIG_INT(
IN RCULONG LowPart
);
NONVIRTUAL
BIG_INT(
IN RCLARGE_INTEGER LargeInteger
);
NONVIRTUAL
VOID
operator=(
IN RCINT LowPart
);
NONVIRTUAL
VOID
operator=(
IN RCUINT LowPart
);
NONVIRTUAL
VOID
operator=(
IN RCSLONG LowPart
);
NONVIRTUAL
VOID
operator=(
IN RCULONG LowPart
);
NONVIRTUAL
VOID
operator=(
IN RCLARGE_INTEGER LargeInteger
);
NONVIRTUAL
VOID
Set(
IN RCULONG LowPart,
IN RCSLONG HighPart
);
NONVIRTUAL
IFSUTIL_EXPORT
VOID
Set(
IN UCHAR ByteCount,
IN PCUCHAR CompressedInteger
);
NONVIRTUAL
RCULONG
GetLowPart(
) CONST;
NONVIRTUAL
RCSLONG
GetHighPart(
) CONST;
NONVIRTUAL
RCLARGE_INTEGER
GetLargeInteger(
) CONST;
NONVIRTUAL
IFSUTIL_EXPORT
VOID
QueryCompressedInteger(
OUT PUCHAR ByteCount,
OUT PUCHAR CompressedInteger
) CONST;
NONVIRTUAL
IFSUTIL_EXPORT
VOID
operator+=(
IN RCBIG_INT BigInt
);
NONVIRTUAL
BIG_INT
operator-(
) CONST;
NONVIRTUAL
IFSUTIL_EXPORT
VOID
operator-=(
IN RCBIG_INT BigInt
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator+(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator-(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator*(
IN RCBIG_INT Left,
IN RCSLONG Right
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator*(
IN RCSLONG Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator/(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BIG_INT
operator%(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator==(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator!=(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator<(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator<=(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator>(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
FRIEND
IFSUTIL_EXPORT
BOOLEAN
operator>=(
IN RCBIG_INT Left,
IN RCBIG_INT Right
);
private:
LARGE_INTEGER x;
};
INLINE
BIG_INT::BIG_INT(
)
/*++
Routine Description:
Constructor for BIG_INT.
Arguments:
None.
Return Value:
None.
--*/
{
}
INLINE
VOID
BIG_INT::operator=(
IN RCINT LowPart
)
/*++
Routine Description:
This routine copies an INT into a BIG_INT.
Arguments:
LowPart - Supplies an integer.
Return Value:
None.
--*/
{
x.LowPart = (ULONG) ((SLONG) LowPart);
x.HighPart = (LowPart >= 0) ? 0 : -1;
}
INLINE
VOID
BIG_INT::operator=(
IN RCUINT LowPart
)
/*++
Routine Description:
This routine copies a UINT into a BIG_INT.
Arguments:
LowPart - Supplies an unsigned integer.
Return Value:
None.
--*/
{
x.LowPart = LowPart;
x.HighPart = 0;
}
INLINE
VOID
BIG_INT::operator=(
IN RCSLONG LowPart
)
/*++
Routine Description:
This routine copies a LONG into a BIG_INT.
Arguments:
LowPart - Supplies a long integer.
Return Value:
None.
--*/
{
x.LowPart = (ULONG) LowPart;
x.HighPart = (LowPart >= 0) ? 0 : -1;
}
INLINE
VOID
BIG_INT::operator=(
IN RCULONG LowPart
)
/*++
Routine Description:
This routine copies a ULONG into a BIG_INT.
Arguments:
LowPart - Supplies an unsigned long integer.
Return Value:
None.
--*/
{
x.LowPart = LowPart;
x.HighPart = 0;
}
INLINE
VOID
BIG_INT::operator=(
IN RCLARGE_INTEGER LargeInteger
)
/*++
Routine Description:
This routine copies a LARGE_INTEGER into a BIG_INT.
Arguments:
LargeInteger -- supplies a large integer
Return Value:
None.
--*/
{
x = LargeInteger;
}
INLINE
BIG_INT::BIG_INT(
IN RCINT LowPart
)
/*++
Routine Description:
Constructor for BIG_INT.
Arguments:
LowPart - Supplies an integer.
Return Value:
None.
--*/
{
*this = LowPart;
}
INLINE
BIG_INT::BIG_INT(
IN RCUINT LowPart
)
/*++
Routine Description:
Constructor for BIG_INT.
Arguments:
LowPart - Supplies an unsigned integer.
Return Value:
None.
--*/
{
*this = LowPart;
}
INLINE
BIG_INT::BIG_INT(
IN RCSLONG LowPart
)
/*++
Routine Description:
Constructor for BIG_INT.
Arguments:
LowPart - Supplies a long integer.
Return Value:
None.
--*/
{
*this = LowPart;
}
INLINE
BIG_INT::BIG_INT(
IN RCULONG LowPart
)
/*++
Routine Description:
Constructor for BIG_INT.
Arguments:
LowPart - Supplies an unsigned long integer.
Return Value:
None.
--*/
{
*this = LowPart;
}
INLINE
BIG_INT::BIG_INT(
IN RCLARGE_INTEGER LargeInteger
)
/*++
Routine Description:
Constructor for BIG_INT to permit initialization with a LARGE_INTEGER
Arguments:
LargeInteger -- supplies a large integer.
Return Value:
None.
--*/
{
*this = LargeInteger;
}
INLINE
VOID
BIG_INT::Set(
IN RCULONG LowPart,
IN RCSLONG HighPart
)
/*++
Routine Description:
This routine sets a BIG_INT to an initial value.
Arguments:
LowPart - Supplies the low part of the BIG_INT.
HighPart - Supplies the high part of the BIG_INT.
Return Value:
None.
--*/
{
x.LowPart = LowPart;
x.HighPart = HighPart;
}
INLINE
RCULONG
BIG_INT::GetLowPart(
) CONST
/*++
Routine Description:
This routine computes the low part of the BIG_INT.
Arguments:
None.
Return Value:
The low part of the BIG_INT.
--*/
{
return x.LowPart;
}
// Note: billmc -- this could probably return an RCLONG, for
// greater efficiency, but that generates warnings.
INLINE
RCSLONG
BIG_INT::GetHighPart(
) CONST
/*++
Routine Description:
This routine computes the high part of the BIG_INT.
Arguments:
None.
Return Value:
The high part of the BIG_INT.
--*/
{
return x.HighPart;
}
INLINE
RCLARGE_INTEGER
BIG_INT::GetLargeInteger(
) CONST
/*++
Routine Description:
This routine returns the large integer embedded in the BIG_INT.
Arguments:
None.
Return Value:
The large-integer value of the BIG_INT.
--*/
{
return x;
}
#endif // BIG_INT_DEFN