Xargon/Duckstation
1
0
Fork 0
mirror of https://github.com/RetroDECK/Duckstation.git synced 2024-11-25 15:15:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

common/BitField: Support sign extension

Browse source
This commit is contained in:
Connor McLaughlin 2019-10-04 23:20:42 +10:00
parent 004c22f031
commit e7d68ba304
1 changed files with 10 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/common/bitfield.h
View file

@ -112,11 +112,19 @@ struct BitField
DataType GetValue() const DataType GetValue() const
{ {
// TODO: Handle signed types if constexpr (std::is_same_v<DataType, bool>)
if (std::is_same<DataType, bool>::value) {
return static_cast<DataType>(!!((data & GetMask()) >> BitIndex)); return static_cast<DataType>(!!((data & GetMask()) >> BitIndex));
}
else if constexpr (std::is_signed_v<DataType>)
{
constexpr int shift = 8 * sizeof(DataType) - BitCount;
return (static_cast<DataType>((data & GetMask()) >> BitIndex) << shift) >> shift;
}
else else
{
return static_cast<DataType>((data & GetMask()) >> BitIndex); return static_cast<DataType>((data & GetMask()) >> BitIndex);
}
} }
void SetValue(DataType value) void SetValue(DataType value)