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Interpreter_FPUtils: Set FPSCR.VXSNAN if either operand to NI_mul() is a signaling NaN

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If either of the operands are signaling NaNs, then an invalid operation
exception needs to be indicated within the FPSCR.

This corrects SNaN flag setting for fmul, fmuls, ps_mul, ps_muls0, and
ps_muls1.
This commit is contained in:
Lioncash 2018-05-25 11:25:11 -04:00
parent 3d44dc3981
commit 3da751f054
1 changed files with 5 additions and 1 deletions
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6
Source/Core/Core/PowerPC/Interpreter/Interpreter_FPUtils.h
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@ -94,13 +94,17 @@ inline double MakeQuiet(double d)
inline double NI_mul(double a, double b)
{
double t = a * b;
const double t = a * b;
if (std::isnan(t))
{
if (Common::IsSNAN(a) || Common::IsSNAN(b))
SetFPException(FPSCR_VXSNAN);
if (std::isnan(a))
return MakeQuiet(a);
if (std::isnan(b))
return MakeQuiet(b);
SetFPException(FPSCR_VXIMZ);
return PPC_NAN;
}