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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110/* largeint.h
Header for 64 bit integer arithmetics library
*/#ifndef _LARGEINT_H#define _LARGEINT_H
#include <windows.h>
#ifdef __cplusplusextern "C" {#endif
#ifdef _HAVE_INT64#define _toi (__int64)#define _toui (unsigned __int64)#else#error "64 bit integers not supported"#endif
/* We don't let the compiler see the prototypes if we are compiling the library because if it does it will choke on conflicting types in the prototypes.*/
#if defined(LARGEINT_PROTOS) || defined(__COMPILING_LARGEINT)
#ifndef __COMPILING_LARGEINT/* addition/subtraction */LARGE_INTEGER WINAPI LargeIntegerAdd (LARGE_INTEGER, LARGE_INTEGER);LARGE_INTEGER WINAPI LargeIntegerSubtract (LARGE_INTEGER, LARGE_INTEGER);
/* bit operations */LARGE_INTEGER WINAPI LargeIntegerArithmeticShift (LARGE_INTEGER, int);LARGE_INTEGER WINAPI LargeIntegerShiftLeft (LARGE_INTEGER, int);LARGE_INTEGER WINAPI LargeIntegerShiftRight (LARGE_INTEGER, int);LARGE_INTEGER WINAPI LargeIntegerNegate (LARGE_INTEGER);
/* conversion */LARGE_INTEGER WINAPI ConvertLongToLargeInteger (LONG);LARGE_INTEGER WINAPI ConvertUlongToLargeInteger (ULONG);
/* multiplication */LARGE_INTEGER WINAPI EnlargedIntegerMultiply (LONG, LONG);LARGE_INTEGER WINAPI EnlargedUnsignedMultiply (ULONG, ULONG);LARGE_INTEGER WINAPI ExtendedIntegerMultiply (LARGE_INTEGER, LONG);/* FIXME: is this not part of largeint? */LARGE_INTEGER WINAPI LargeIntegerMultiply (LARGE_INTEGER, LARGE_INTEGER);#endif /* __COMPILING_LARGEINT */
#else
#define LargeIntegerAdd(a,b) (LARGE_INTEGER)(_toi(a) + _toi(b))#define LargeIntegerSubtract(a,b) (LARGE_INTEGER)(_toi(a) - _toi(b))#define LargeIntegerRightShift(i,n) (LARGE_INTEGER)(_toi(i) >> (n))#define LargeIntegerArithmeticShift LargeIntegerRightShift#define LargeIntegerLeftShift(i,n) (LARGE_INTEGER)(_toi(i) << (n))#define LargeIntegerNegate(i) (LARGE_INTEGER)(- _toi(i))#define EnlargedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))#define EnlargedUnsignedMultiply(a,b) (LARGE_INTEGER)(_toui(a) * _toui(b))#define ExtendedIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))/* FIXME: should this exist */#define LargeIntegerMultiply(a,b) (LARGE_INTEGER)(_toi(a) * _toi(b))#define ConvertLongToLargeInteger(l) (LARGE_INTEGER)(_toi(l))#define ConvertUlongToLargeInteger(ul) (LARGE_INTEGER)(_toui(ul))
#endif /* LARGEINT_PROTOS || __COMPILING_LARGEINT */
#ifndef __COMPILING_LARGEINT/* division; no macros of these because of multiple expansion */LARGE_INTEGER WINAPI LargeIntegerDivide (LARGE_INTEGER, LARGE_INTEGER, PLARGE_INTEGER);ULONG WINAPI EnlargedUnsignedDivide (ULARGE_INTEGER, ULONG, PULONG);LARGE_INTEGER WINAPI ExtendedLargeIntegerDivide (LARGE_INTEGER, ULONG, PULONG);LARGE_INTEGER WINAPI ExtendedMagicDivide (LARGE_INTEGER, LARGE_INTEGER, int);#endif /* __COMPILING_LARGEINT */
#define LargeIntegerAnd(dest, src, m) \{ \ dest._STRUCT_NAME(u.)LowPart = s._STRUCT_NAME(u.)LowPart & m._STRUCT_NAME(u.)LowPart; \ dest._STRUCT_NAME(u.)HighPart = s._STRUCT_NAME(u.)HighPart & m._STRUCT_NAME(u.)HighPart; \}
/* comparision */#define LargeIntegerGreaterThan(a,b) (_toi(a) > _toi(b))#define LargeIntegerGreaterThanOrEqual(a,b) (_toi(a) >= _toi(b))#define LargeIntegerEqualTo(a,b) (_toi(a) == _toi(b))#define LargeIntegerNotEqualTo(a,b) (_toi(a) != _toi(b))#define LargeIntegerLessThan(a,b) (_toi(a) < _toi(b))#define LargeIntegerLessThanOrEqualTo(a,b) (_toi(a) <= _toi(b))#define LargeIntegerGreaterThanZero(a) (_toi(a) > 0)#define LargeIntegerGreaterOrEqualToZero(a) ((a)._STRUCT_NAME(u.)HighPart > 0)#define LargeIntegerEqualToZero(a) !((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)#define LargeIntegerNotEqualToZero(a) ((a)._STRUCT_NAME(u.)LowPart | (a)._STRUCT_NAME(u.)HighPart)#define LargeIntegerLessThanZero(a) ((a)._STRUCT_NAME(u.)HighPart < 0)#define LargeIntegerLessOrEqualToZero(a) (_toi(a) <= 0)
#ifndef __COMPILING_LARGEINT#undef _toi#undef _toui#endif
#ifdef __cplusplus}#endif
#endif /* _LARGEINT_H */