mingw/include/largeint.h

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