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109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*
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largeint.h
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Header for 64 bit integer arithmetics library
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*/
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#ifndef _LARGEINT_H
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#define _LARGEINT_H
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#include <windows.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _HAVE_INT64
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#define _toi (__int64)
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#define _toui (unsigned __int64)
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#else
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#error "64 bit integers not supported"
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#endif
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/*
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We don't let the compiler see the prototypes if we are compiling the
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library because if it does it will choke on conflicting types in the
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prototypes.
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*/
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#if defined(LARGEINT_PROTOS) || defined(__COMPILING_LARGEINT)
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#ifndef __COMPILING_LARGEINT
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/* addition/subtraction */
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LARGE_INTEGER WINAPI LargeIntegerAdd (LARGE_INTEGER, LARGE_INTEGER);
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LARGE_INTEGER WINAPI LargeIntegerSubtract (LARGE_INTEGER, LARGE_INTEGER);
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/* bit operations */
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LARGE_INTEGER WINAPI LargeIntegerArithmeticShift (LARGE_INTEGER, int);
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LARGE_INTEGER WINAPI LargeIntegerShiftLeft (LARGE_INTEGER, int);
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LARGE_INTEGER WINAPI LargeIntegerShiftRight (LARGE_INTEGER, int);
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LARGE_INTEGER WINAPI LargeIntegerNegate (LARGE_INTEGER);
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/* conversion */
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LARGE_INTEGER WINAPI ConvertLongToLargeInteger (LONG);
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LARGE_INTEGER WINAPI ConvertUlongToLargeInteger (ULONG);
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/* multiplication */
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LARGE_INTEGER WINAPI EnlargedIntegerMultiply (LONG, LONG);
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LARGE_INTEGER WINAPI EnlargedUnsignedMultiply (ULONG, ULONG);
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LARGE_INTEGER WINAPI ExtendedIntegerMultiply (LARGE_INTEGER, LONG);
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/* FIXME: is this not part of largeint? */
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LARGE_INTEGER WINAPI LargeIntegerMultiply (LARGE_INTEGER, LARGE_INTEGER);
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#endif /* __COMPILING_LARGEINT */
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#else
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#define LargeIntegerAdd(a,b) (LARGE_INTEGER)(_toi(a) + _toi(b))
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#define LargeIntegerSubtract(a,b) (LARGE_INTEGER)(_toi(a) - _toi(b))
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#define LargeIntegerRightShift(i,n) (LARGE_INTEGER)(_toi(i) >> (n))
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#define LargeIntegerArithmeticShift LargeIntegerRightShift
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#define LargeIntegerLeftShift(i,n) (LARGE_INTEGER)(_toi(i) << (n))
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#define LargeIntegerNegate(i) (LARGE_INTEGER)(- _toi(i))
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#define EnlargedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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#define EnlargedUnsignedMultiply(a,b) (LARGE_INTEGER)(_toui(a) * _toui(b))
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#define ExtendedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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/* FIXME: should this exist */
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#define LargeIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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#define ConvertLongToLargeInteger(l) (LARGE_INTEGER)(_toi(l))
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#define ConvertUlongToLargeInteger(ul) (LARGE_INTEGER)(_toui(ul))
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#endif /* LARGEINT_PROTOS || __COMPILING_LARGEINT */
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#ifndef __COMPILING_LARGEINT
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/* division; no macros of these because of multiple expansion */
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LARGE_INTEGER WINAPI LargeIntegerDivide (LARGE_INTEGER, LARGE_INTEGER, PLARGE_INTEGER);
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ULONG WINAPI EnlargedUnsignedDivide (ULARGE_INTEGER, ULONG, PULONG);
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LARGE_INTEGER WINAPI ExtendedLargeIntegerDivide (LARGE_INTEGER, ULONG, PULONG);
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LARGE_INTEGER WINAPI ExtendedMagicDivide (LARGE_INTEGER, LARGE_INTEGER, int);
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#endif /* __COMPILING_LARGEINT */
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#define LargeIntegerAnd(dest, src, m) \
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{ \
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dest._STRUCT_NAME(u.)LowPart = s._STRUCT_NAME(u.)LowPart & m._STRUCT_NAME(u.)LowPart; \
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dest._STRUCT_NAME(u.)HighPart = s._STRUCT_NAME(u.)HighPart & m._STRUCT_NAME(u.)HighPart; \
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}
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/* comparision */
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#define LargeIntegerGreaterThan(a,b) (_toi(a) > _toi(b))
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#define LargeIntegerGreaterThanOrEqual(a,b) (_toi(a) >= _toi(b))
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#define LargeIntegerEqualTo(a,b) (_toi(a) == _toi(b))
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#define LargeIntegerNotEqualTo(a,b) (_toi(a) != _toi(b))
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#define LargeIntegerLessThan(a,b) (_toi(a) < _toi(b))
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#define LargeIntegerLessThanOrEqualTo(a,b) (_toi(a) <= _toi(b))
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#define LargeIntegerGreaterThanZero(a) (_toi(a) > 0)
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#define LargeIntegerGreaterOrEqualToZero(a) ((a)._STRUCT_NAME(u.)HighPart > 0)
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#define LargeIntegerEqualToZero(a) !((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)
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#define LargeIntegerNotEqualToZero(a) ((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)
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#define LargeIntegerLessThanZero(a) ((a)._STRUCT_NAME(u.)HighPart < 0)
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#define LargeIntegerLessOrEqualToZero(a) (_toi(a) <= 0)
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#ifndef __COMPILING_LARGEINT
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#undef _toi
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#undef _toui
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LARGEINT_H */
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