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Core: remove usage of fpclassify in CheckFPUInput32 and CheckFPUResult32

This commit is contained in:
zilmar 2023-05-15 22:57:13 +09:30
parent 0ddeb6b981
commit 62b29622ca
1 changed files with 4 additions and 6 deletions
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10
Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
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@ -3165,14 +3165,13 @@ bool R4300iOp::TestCop1UsableException(void)
bool R4300iOp::CheckFPUInput32(const float & Value)
{
int Type = fpclassify(Value);
if (Type == FP_SUBNORMAL)
if ((*((uint32_t *)&Value) & 0x7F800000) == 0x00000000 && (*((uint32_t *)&Value) & 0x007FFFFF) != 0x00000000) // Sub Normal
{
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
StatusReg.Cause.UnimplementedOperation = 1;
return true;
}
else if (Type == FP_NAN)
if ((*((uint32_t *)&Value) & 0x7F800000) == 0x7F800000 && (*((uint32_t *)&Value) & 0x007FFFFF) != 0x00000000) // Nan
{
uint32_t Value32 = *(uint32_t *)&Value;
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
@ -3279,12 +3278,11 @@ bool R4300iOp::CheckFPUInput64Conv(const double & Value)
bool R4300iOp::CheckFPUResult32(float & Result)
{
int fptype = fpclassify(Result);
if (fptype == FP_NAN)
if ((*((uint32_t *)&Result) & 0x7F800000) == 0x7F800000 && (*((uint32_t *)&Result) & 0x007FFFFF) != 0x00000000) // Nan
{
*((uint32_t *)&Result) = 0x7fbfffff;
}
else if (fptype == FP_SUBNORMAL)
else if ((*((uint32_t *)&Result) & 0x7F800000) == 0x00000000 && (*((uint32_t *)&Result) & 0x007FFFFF) != 0x00000000) // Sub Normal
{
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
if (!StatusReg.FlushSubnormals || StatusReg.Enable.Underflow || StatusReg.Enable.Inexact)