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[FAST486]

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Fix Fast486FpuToInteger.


svn path=/trunk/; revision=67846
This commit is contained in:
Aleksandar Andrejevic 2015-05-22 04:51:20 +00:00
parent d9dcc9a022
commit ac3616d42c
1 changed files with 25 additions and 6 deletions
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31
reactos/lib/fast486/fpu.c
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@ -310,8 +310,7 @@ Fast486FpuToInteger(PFAST486_STATE State,
return TRUE;
}
if (FPU_IS_NAN(Value) || !FPU_IS_NORMALIZED(Value)
|| (UnbiasedExp < 0) || (UnbiasedExp > 63))
if (FPU_IS_NAN(Value) || !FPU_IS_NORMALIZED(Value) || (UnbiasedExp >= 63))
{
/* Raise an invalid operation exception */
State->FpuStatus.Ie = TRUE;
@ -328,11 +327,31 @@ Fast486FpuToInteger(PFAST486_STATE State,
}
}
Bits = 63 - UnbiasedExp;
if (UnbiasedExp >= 0)
{
Bits = 63 - UnbiasedExp;
/* Calculate the result and the remainder */
*Result = (LONGLONG)(Value->Mantissa >> Bits);
Remainder = Value->Mantissa & ((1 << Bits) - 1);
/* Calculate the result and the remainder */
*Result = (LONGLONG)(Value->Mantissa >> Bits);
Remainder = Value->Mantissa & ((1 << Bits) - 1);
}
else
{
/* The result is zero */
*Result = 0LL;
if (UnbiasedExp > -64)
{
Bits = 65 + UnbiasedExp;
Remainder = Value->Mantissa >> (64 - Bits);
}
else
{
/* Too small to even have a remainder */
Bits = 1;
Remainder = 0ULL;
}
}
/* The result must be positive here */
ASSERT(*Result >= 0LL);