1 files changed, 109 insertions, 0 deletions
diff --git a/winsup/w32api/include/largeint.h b/winsup/w32api/include/largeint.h
new file mode 100644
index 000000000..1e90de07d
--- /dev/null
+++ b/winsup/w32api/include/largeint.h
@@ -0,0 +1,109 @@
+/*
+  largeint.h
+
+  Header for 64 bit integer arithmetics library
+
+ */
+#ifndef _LARGEINT_H
+#define _LARGEINT_H
+
+#include <windows.h>
+
+#ifdef __cplusplus
+extern "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 */