| 1 | /*
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| 2 | largeint.h
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| 3 |
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| 4 | Header for 64 bit integer arithmetics library
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| 5 |
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| 6 | */
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| 7 | #ifndef _LARGEINT_H
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| 8 | #define _LARGEINT_H
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| 9 | #if __GNUC__ >=3
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| 10 | #pragma GCC system_header
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| 11 | #endif
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| 12 |
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| 13 | #include <windows.h>
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| 14 |
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| 15 | #ifdef __cplusplus
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| 16 | extern "C" {
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| 17 | #endif
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| 18 |
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| 19 | #ifdef _HAVE_INT64
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| 20 | #define _toi (__int64)
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| 21 | #define _toui (unsigned __int64)
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| 22 | #else
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| 23 | #error "64 bit integers not supported"
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| 24 | #endif
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| 25 |
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| 26 | /*
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| 27 | We don't let the compiler see the prototypes if we are compiling the
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| 28 | library because if it does it will choke on conflicting types in the
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| 29 | prototypes.
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| 30 | */
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| 31 |
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| 32 | #if defined(LARGEINT_PROTOS) || defined(__COMPILING_LARGEINT)
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| 33 |
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| 34 | #ifndef __COMPILING_LARGEINT
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| 35 | /* addition/subtraction */
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| 36 | LARGE_INTEGER WINAPI LargeIntegerAdd (LARGE_INTEGER, LARGE_INTEGER);
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| 37 | LARGE_INTEGER WINAPI LargeIntegerSubtract (LARGE_INTEGER, LARGE_INTEGER);
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| 38 |
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| 39 | /* bit operations */
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| 40 | LARGE_INTEGER WINAPI LargeIntegerArithmeticShift (LARGE_INTEGER, int);
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| 41 | LARGE_INTEGER WINAPI LargeIntegerShiftLeft (LARGE_INTEGER, int);
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| 42 | LARGE_INTEGER WINAPI LargeIntegerShiftRight (LARGE_INTEGER, int);
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| 43 | LARGE_INTEGER WINAPI LargeIntegerNegate (LARGE_INTEGER);
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| 44 |
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| 45 | /* conversion */
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| 46 | LARGE_INTEGER WINAPI ConvertLongToLargeInteger (LONG);
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| 47 | LARGE_INTEGER WINAPI ConvertUlongToLargeInteger (ULONG);
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| 48 |
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| 49 | /* multiplication */
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| 50 | LARGE_INTEGER WINAPI EnlargedIntegerMultiply (LONG, LONG);
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| 51 | LARGE_INTEGER WINAPI EnlargedUnsignedMultiply (ULONG, ULONG);
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| 52 | LARGE_INTEGER WINAPI ExtendedIntegerMultiply (LARGE_INTEGER, LONG);
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| 53 | /* FIXME: is this not part of largeint? */
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| 54 | LARGE_INTEGER WINAPI LargeIntegerMultiply (LARGE_INTEGER, LARGE_INTEGER);
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| 55 | #endif /* __COMPILING_LARGEINT */
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| 56 |
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| 57 | #else
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| 58 |
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| 59 | #define LargeIntegerAdd(a,b) (LARGE_INTEGER)(_toi(a) + _toi(b))
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| 60 | #define LargeIntegerSubtract(a,b) (LARGE_INTEGER)(_toi(a) - _toi(b))
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| 61 | #define LargeIntegerRightShift(i,n) (LARGE_INTEGER)(_toi(i) >> (n))
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| 62 | #define LargeIntegerArithmeticShift LargeIntegerRightShift
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| 63 | #define LargeIntegerLeftShift(i,n) (LARGE_INTEGER)(_toi(i) << (n))
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| 64 | #define LargeIntegerNegate(i) (LARGE_INTEGER)(- _toi(i))
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| 65 | #define EnlargedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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| 66 | #define EnlargedUnsignedMultiply(a,b) (LARGE_INTEGER)(_toui(a) * _toui(b))
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| 67 | #define ExtendedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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| 68 | /* FIXME: should this exist */
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| 69 | #define LargeIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))
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| 70 | #define ConvertLongToLargeInteger(l) (LARGE_INTEGER)(_toi(l))
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| 71 | #define ConvertUlongToLargeInteger(ul) (LARGE_INTEGER)(_toui(ul))
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| 72 |
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| 73 | #endif /* LARGEINT_PROTOS || __COMPILING_LARGEINT */
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| 74 |
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| 75 | #ifndef __COMPILING_LARGEINT
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| 76 | /* division; no macros of these because of multiple expansion */
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| 77 | LARGE_INTEGER WINAPI LargeIntegerDivide (LARGE_INTEGER, LARGE_INTEGER, PLARGE_INTEGER);
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| 78 | ULONG WINAPI EnlargedUnsignedDivide (ULARGE_INTEGER, ULONG, PULONG);
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| 79 | LARGE_INTEGER WINAPI ExtendedLargeIntegerDivide (LARGE_INTEGER, ULONG, PULONG);
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| 80 | LARGE_INTEGER WINAPI ExtendedMagicDivide (LARGE_INTEGER, LARGE_INTEGER, int);
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| 81 | #endif /* __COMPILING_LARGEINT */
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| 82 |
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| 83 | #define LargeIntegerAnd(dest, src, m) \
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| 84 | { \
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| 85 | dest._STRUCT_NAME(u.)LowPart = s._STRUCT_NAME(u.)LowPart & m._STRUCT_NAME(u.)LowPart; \
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| 86 | dest._STRUCT_NAME(u.)HighPart = s._STRUCT_NAME(u.)HighPart & m._STRUCT_NAME(u.)HighPart; \
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| 87 | }
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| 88 |
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| 89 | /* comparision */
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| 90 | #define LargeIntegerGreaterThan(a,b) (_toi(a) > _toi(b))
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| 91 | #define LargeIntegerGreaterThanOrEqual(a,b) (_toi(a) >= _toi(b))
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| 92 | #define LargeIntegerEqualTo(a,b) (_toi(a) == _toi(b))
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| 93 | #define LargeIntegerNotEqualTo(a,b) (_toi(a) != _toi(b))
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| 94 | #define LargeIntegerLessThan(a,b) (_toi(a) < _toi(b))
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| 95 | #define LargeIntegerLessThanOrEqualTo(a,b) (_toi(a) <= _toi(b))
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| 96 | #define LargeIntegerGreaterThanZero(a) (_toi(a) > 0)
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| 97 | #define LargeIntegerGreaterOrEqualToZero(a) ((a)._STRUCT_NAME(u.)HighPart > 0)
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| 98 | #define LargeIntegerEqualToZero(a) !((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)
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| 99 | #define LargeIntegerNotEqualToZero(a) ((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)
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| 100 | #define LargeIntegerLessThanZero(a) ((a)._STRUCT_NAME(u.)HighPart < 0)
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| 101 | #define LargeIntegerLessOrEqualToZero(a) (_toi(a) <= 0)
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| 102 |
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| 103 | #ifndef __COMPILING_LARGEINT
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| 104 | #undef _toi
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| 105 | #undef _toui
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| 106 | #endif
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| 107 |
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| 108 | #ifdef __cplusplus
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| 109 | }
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| 110 | #endif
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| 111 |
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| 112 | #endif /* _LARGEINT_H */
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