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Correct overflow in trunc.w.s for interpreter.

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Reported in #4786.
This commit is contained in:
Unknown W. Brackets 2014-06-21 00:53:33 -07:00
parent 62daf6d7c8
commit 95f5d9397c
1 changed files with 12 additions and 1 deletions
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13
Core/MIPS/MIPSInt.cpp
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@ -893,7 +893,18 @@ namespace MIPSInt
switch (op & 0x3f)
{
case 12: FsI(fd) = (int)floorf(F(fs)+0.5f); break; //round.w.s
case 13: FsI(fd) = F(fs)>=0 ? (int)floorf(F(fs)) : (int)ceilf(F(fs)); break;//trunc.w.s
case 13: //trunc.w.s
if (F(fs) >= 0.0f) {
FsI(fd) = (int)floorf(F(fs));
// Overflow, but it was positive.
if (FsI(fd) == -2147483648) {
FsI(fd) = 2147483647;
}
} else {
// Overflow happens to be the right value anyway.
FsI(fd) = (int)ceilf(F(fs));
}
break;
case 14: FsI(fd) = (int)ceilf (F(fs)); break; //ceil.w.s
case 15: FsI(fd) = (int)floorf(F(fs)); break; //floor.w.s
}