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Core: In R4300iOp::CheckFPUInput64 check values directly instead of using fpclassify

This commit is contained in:
zilmar 2024-05-23 11:43:19 +09:30
parent ec714cd90d
commit 0ff0d5234c
1 changed files with 2 additions and 3 deletions
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5
Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
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@ -3376,15 +3376,14 @@ bool R4300iOp::CheckFPUInput32Conv(const float & Value)
bool R4300iOp::CheckFPUInput64(const double & Value)
{
int Type = fpclassify(Value);
bool Exception = false;
if (Type == FP_SUBNORMAL)
if ((*((uint64_t *)&Value) & 0x7FF0000000000000ULL) == 0x0000000000000000ULL && (*((uint64_t *)&Value) & 0x000FFFFFFFFFFFFFULL) != 0x0000000000000000ULL)
{
FPStatusReg & StatusReg = (FPStatusReg &)m_FPCR[31];
StatusReg.Cause.UnimplementedOperation = 1;
Exception = true;
}
else if (Type == FP_NAN)
else if ((*((uint64_t *)&Value) & 0x7FF0000000000000ULL) == 0x7FF0000000000000ULL && (*((uint64_t *)&Value) & 0x000FFFFFFFFFFFFFULL) != 0x0000000000000000ULL)
{
uint64_t Value64 = *(uint64_t *)&Value;
FPStatusReg & StatusReg = (FPStatusReg &)m_FPCR[31];