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common/fp/op/FPRSqrtEstimate: Add half-precision specialization for FPRSqrtEstimate

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Lioncash 2019-04-13 18:30:17 -04:00 committed by MerryMage
parent c6e6ec0e69
commit 726b9914c5
1 changed files with 5 additions and 4 deletions
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9
src/common/fp/op/FPRSqrtEstimate.cpp
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@ -19,7 +19,7 @@ namespace Dynarmic::FP {
template<typename FPT> template<typename FPT>
FPT FPRSqrtEstimate(FPT op, FPCR fpcr, FPSR& fpsr) { FPT FPRSqrtEstimate(FPT op, FPCR fpcr, FPSR& fpsr) {
auto [type, sign, value] = FPUnpack<FPT>(op, fpcr, fpsr); const auto [type, sign, value] = FPUnpack<FPT>(op, fpcr, fpsr);
if (type == FPType::SNaN || type == FPType::QNaN) { if (type == FPType::SNaN || type == FPType::QNaN) {
return FPProcessNaN(type, op, fpcr, fpsr); return FPProcessNaN(type, op, fpcr, fpsr);
@ -27,16 +27,16 @@ FPT FPRSqrtEstimate(FPT op, FPCR fpcr, FPSR& fpsr) {
if (type == FPType::Zero) { if (type == FPType::Zero) {
FPProcessException(FPExc::DivideByZero, fpcr, fpsr); FPProcessException(FPExc::DivideByZero, fpcr, fpsr);
return FPInfo<FPT>::Infinity(sign); return FPT(FPInfo<FPT>::Infinity(sign));
} }
if (sign) { if (sign) {
FPProcessException(FPExc::InvalidOp, fpcr, fpsr); FPProcessException(FPExc::InvalidOp, fpcr, fpsr);
return FPInfo<FPT>::DefaultNaN(); return FPT(FPInfo<FPT>::DefaultNaN());
} }
if (type == FPType::Infinity) { if (type == FPType::Infinity) {
return FPInfo<FPT>::Zero(false); return FPT(FPInfo<FPT>::Zero(false));
} }
const int result_exponent = (-(value.exponent + 1)) >> 1; const int result_exponent = (-(value.exponent + 1)) >> 1;
@ -50,6 +50,7 @@ FPT FPRSqrtEstimate(FPT op, FPCR fpcr, FPSR& fpsr) {
return (bits_exponent << FPInfo<FPT>::explicit_mantissa_width) | (bits_mantissa & FPInfo<FPT>::mantissa_mask); return (bits_exponent << FPInfo<FPT>::explicit_mantissa_width) | (bits_mantissa & FPInfo<FPT>::mantissa_mask);
} }
template u16 FPRSqrtEstimate<u16>(u16 op, FPCR fpcr, FPSR& fpsr);
template u32 FPRSqrtEstimate<u32>(u32 op, FPCR fpcr, FPSR& fpsr); template u32 FPRSqrtEstimate<u32>(u32 op, FPCR fpcr, FPSR& fpsr);
template u64 FPRSqrtEstimate<u64>(u64 op, FPCR fpcr, FPSR& fpsr); template u64 FPRSqrtEstimate<u64>(u64 op, FPCR fpcr, FPSR& fpsr);