public void RunStructFldScenario(ScalarTernOpBinResTest__MultiplyNoFlagsUInt32 testClass)
{
UInt32 buffer = 0;
var result = Bmi2.MultiplyNoFlags(_fld1, _fld2, &buffer);
testClass.ValidateResult(_fld1, _fld2, buffer, result);
}
public static ulong bits_extractparallel(ulong x, ulong mask)
{
if (Bmi2.IsBmi2Supported)
{
return(Bmi2.pext_u64(x, mask));
}
else
{
ulong result = 0;
for (ulong i = 1; mask != 0; i += i)
{
if ((x & bits_extractlowest(mask)) != 0)
{
result |= i;
}
else
{
}
mask = bits_resetlowest(mask);
}
return(result);
}
}
public static uint bits_extractparallel(uint x, uint mask)
{
if (Bmi2.IsBmi2Supported)
{
return(Bmi2.pext_u32(x, mask));
}
else
{
uint result = 0;
for (uint i = 1; mask != 0; i += i)
{
if ((x & bits_extractlowest(mask)) != 0)
{
result |= i;
}
else
{
}
mask = bits_resetlowest(mask);
}
return(result);
}
}
public void RunStructLclFldScenario()
{
var test = TestStruct.Create();
var result = Bmi2.ParallelBitExtract(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
public void RunClassLclFldScenario()
{
var test = new ScalarBinaryOpTest__ParallelBitExtractUInt64();
var result = Bmi2.ParallelBitExtract(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
public void RunLclFldScenario()
{
var test = new ScalarBinaryOpTest__ParallelBitDepositUInt32();
var result = Bmi2.ParallelBitDeposit(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
private static uint ExtractCharsFromFourByteSequence(uint value)
{
if (BitConverter.IsLittleEndian)
{
#if NETCOREAPP3_1
if (Bmi2.IsSupported)
{
// need to reverse endianness for bit manipulation to work correctly
value = BinaryPrimitives.ReverseEndianness(value);
// value = [ 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx ]
// want to return [ 110110wwwwxxxxxx 110111xxxxxxxxxx ]
// where wwww = uuuuu - 1
uint highSurrogateChar = Bmi2.ParallelBitExtract(value, 0b00000111_00111111_00110000_00000000u);
uint lowSurrogateChar = Bmi2.ParallelBitExtract(value, 0b00000000_00000000_00001111_00111111u);
uint combined = (lowSurrogateChar << 16) + highSurrogateChar;
combined -= 0x40u; // wwww = uuuuu - 1
combined += 0xDC00_D800u; // add surrogate markers
return(combined);
}
else
{
#endif
// input is UTF8 [ 10xxxxxx 10yyyyyy 10uuzzzz 11110uuu ] = scalar 000uuuuu zzzzyyyy yyxxxxxx
// want to return UTF16 scalar 000uuuuuzzzzyyyyyyxxxxxx = [ 110111yy yyxxxxxx 110110ww wwzzzzyy ]
// where wwww = uuuuu - 1
uint retVal = (uint)(byte)value << 8; // retVal = [ 00000000 00000000 11110uuu 00000000 ]
retVal |= (value & 0x0000_3F00u) >> 6; // retVal = [ 00000000 00000000 11110uuu uuzzzz00 ]
retVal |= (value & 0x0030_0000u) >> 20; // retVal = [ 00000000 00000000 11110uuu uuzzzzyy ]
retVal |= (value & 0x3F00_0000u) >> 8; // retVal = [ 00000000 00xxxxxx 11110uuu uuzzzzyy ]
retVal |= (value & 0x000F_0000u) << 6; // retVal = [ 000000yy yyxxxxxx 11110uuu uuzzzzyy ]
retVal -= 0x0000_0040u; // retVal = [ 000000yy yyxxxxxx 111100ww wwzzzzyy ]
retVal -= 0x0000_2000u; // retVal = [ 000000yy yyxxxxxx 110100ww wwzzzzyy ]
retVal += 0x0000_0800u; // retVal = [ 000000yy yyxxxxxx 110110ww wwzzzzyy ]
retVal += 0xDC00_0000u; // retVal = [ 110111yy yyxxxxxx 110110ww wwzzzzyy ]
return(retVal);
#if NETCOREAPP3_1
}
#endif
}
else
{
// input is UTF8 [ 11110uuu 10uuzzzz 10yyyyyy 10xxxxxx ] = scalar 000uuuuu zzzzyyyy yyxxxxxx
// want to return UTF16 scalar 000uuuuuxxxxxxxxxxxxxxxx = [ 110110wwwwxxxxxx 110111xxxxxxxxx ]
// where wwww = uuuuu - 1
uint retVal = value & 0xFF00_0000u; // retVal = [ 11110uuu 00000000 00000000 00000000 ]
retVal |= (value & 0x003F_0000u) << 2; // retVal = [ 11110uuu uuzzzz00 00000000 00000000 ]
retVal |= (value & 0x0000_3000u) << 4; // retVal = [ 11110uuu uuzzzzyy 00000000 00000000 ]
retVal |= (value & 0x0000_0F00u) >> 2; // retVal = [ 11110uuu uuzzzzyy 000000yy yy000000 ]
retVal |= (value & 0x0000_003Fu); // retVal = [ 11110uuu uuzzzzyy 000000yy yyxxxxxx ]
retVal -= 0x2000_0000u; // retVal = [ 11010uuu uuzzzzyy 000000yy yyxxxxxx ]
retVal -= 0x0040_0000u; // retVal = [ 110100ww wwzzzzyy 000000yy yyxxxxxx ]
retVal += 0x0000_DC00u; // retVal = [ 110100ww wwzzzzyy 110111yy yyxxxxxx ]
retVal += 0x0800_0000u; // retVal = [ 110110ww wwzzzzyy 110111yy yyxxxxxx ]
return(retVal);
}
}
static unsafe uint MultiplyNoFlags4(uint a, uint b)
{
uint r;
r = Bmi2.MultiplyNoFlags(a, b, &r);
return(r);
}
public void RunClassFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassFldScenario));
var result = Bmi2.ZeroHighBits(_fld1, _fld2);
ValidateResult(_fld1, _fld2, result);
}
public void RunClassFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassFldScenario));
var result = Bmi2.ParallelBitExtract(_fld1, _fld2);
ValidateResult(_fld1, _fld2, result);
}
public void RunLclVarScenario_UnsafeRead()
{
var data1 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1));
var data2 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2));
var result = Bmi2.ParallelBitDeposit(data1, data2);
ValidateResult(data1, data2, result);
}
public static uint ParallelBitDeposit(uint x, uint mask)
{
if (Bmi2.IsSupported)
{
return(Bmi2.ParallelBitDeposit(x, mask));
}
return(ParallelBitDepositLogic(x, mask));
}
public void RunStructLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunStructLclFldScenario));
var test = TestStruct.Create();
var result = Bmi2.MultiplyNoFlags(test._fld1, test._fld2, &test._fld3);
ValidateResult(test._fld1, test._fld2, test._fld3, result);
}
public void RunBasicScenario_UnsafeRead()
{
var result = Bmi2.ParallelBitDeposit(
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1)),
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2))
);
ValidateResult(_data1, _data2, result);
}
public void RunStructLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunStructLclFldScenario));
var test = TestStruct.Create();
var result = Bmi2.ParallelBitExtract(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
public void RunClsVarScenario()
{
var result = Bmi2.ParallelBitDeposit(
_clsVar1,
_clsVar2
);
ValidateResult(_clsVar1, _clsVar2, result);
}
public void RunClassLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassLclFldScenario));
var test = new ScalarBinaryOpTest__ParallelBitExtractUInt32();
var result = Bmi2.ParallelBitExtract(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
public void RunClassLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassLclFldScenario));
var test = new ScalarBinaryOpTest__ZeroHighBitsUInt32();
var result = Bmi2.ZeroHighBits(test._fld1, test._fld2);
ValidateResult(test._fld1, test._fld2, result);
}
/// <summary>
/// Sets the bits of <paramref name="value"/> higher than specified <paramref name="index"/> to 0.
/// </summary>
/// <param name="index">The index.</param>
/// <param name="value">The value.</param>
/// <returns></returns>
public static uint ZeroHighBits(int index, uint value)
{
#if NETCOREAPP3_1_OR_GREATER
if (Bmi2.IsSupported)
{
return(Bmi2.ZeroHighBits(value, (uint)index));
}
#endif
return(value & ~(~0u << index));
}
public void RunClassFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassFldScenario));
UInt32 buffer = 0;
var result = Bmi2.MultiplyNoFlags(_fld1, _fld2, &buffer);
ValidateResult(_fld1, _fld2, buffer, result);
}
public void RunLclVarScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunLclVarScenario_UnsafeRead));
var data1 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1));
var data2 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2));
var result = Bmi2.ParallelBitExtract(data1, data2);
ValidateResult(data1, data2, result);
}
private static uint UInt16ToUpperHexWithBmi2(uint value)
{
Debug.Assert(Bmi2.IsSupported, "This code path shouldn't have gotten hit unless BMI2 was supported.");
// Convert 0x0000WXYZ to 0x0W0X0Y0Z.
value = Bmi2.ParallelBitDeposit(value, 0x0F0F0F0Fu);
// From WriteHexByte, must document better
return((((0x89898989u - value) & 0x70707070u) >> 4) + value + 0x30303030u);
}
public void RunBasicScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunBasicScenario_UnsafeRead));
var result = Bmi2.ZeroHighBits(
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1)),
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2))
);
ValidateResult(_data1, _data2, result);
}
public void RunLclVarScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunLclVarScenario_UnsafeRead));
var data1 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1));
var data2 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2));
var data3 = Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data3));
var result = Bmi2.MultiplyNoFlags(data1, data2, &data3);
ValidateResult(data1, data2, data3, result);
}
public void RunClassLclFldScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClassLclFldScenario));
UInt32 buffer = 0;
var test = new ScalarTernOpBinResTest__MultiplyNoFlagsUInt32();
var result = Bmi2.MultiplyNoFlags(test._fld1, test._fld2, &buffer);
ValidateResult(test._fld1, test._fld2, buffer, result);
}
public void RunClsVarScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClsVarScenario));
var result = Bmi2.ParallelBitExtract(
_clsVar1,
_clsVar2
);
ValidateResult(_clsVar1, _clsVar2, result);
}
public static ulong bits_zerohigh(ulong x, int startIndex)
{
if (Bmi2.IsBmi2Supported)
{
return(Bmi2.bzhi_u64(x, (uint)startIndex));
}
else
{
return(andnot(x, ulong.MaxValue << startIndex));
}
}
public void RunClsVarScenario()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunClsVarScenario));
var result = Bmi2.ZeroHighBits(
_clsVar1,
_clsVar2
);
ValidateResult(_clsVar1, _clsVar2, result);
}
public void RunBasicScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunBasicScenario_UnsafeRead));
var result = Bmi2.ParallelBitExtract(
Unsafe.ReadUnaligned <UInt64>(ref Unsafe.As <UInt64, byte>(ref _data1)),
Unsafe.ReadUnaligned <UInt64>(ref Unsafe.As <UInt64, byte>(ref _data2))
);
ValidateResult(_data1, _data2, result);
}
public void RunBasicScenario_UnsafeRead()
{
TestLibrary.TestFramework.BeginScenario(nameof(RunBasicScenario_UnsafeRead));
UInt32 buffer = 0;
var result = Bmi2.MultiplyNoFlags(
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data1)),
Unsafe.ReadUnaligned <UInt32>(ref Unsafe.As <UInt32, byte>(ref _data2)),
&buffer
);
ValidateResult(_data1, _data2, buffer, result);
}