public Constant Negate()
{
PrimitiveType p = (PrimitiveType)DataType;
var c = GetValue();
if ((p.Domain & (Domain.SignedInt | Domain.UnsignedInt)) != 0)
{
p = PrimitiveType.Create(Domain.SignedInt, p.Size);
if (p.BitSize <= 8)
{
return(Constant.Create(p, -Convert.ToSByte(c)));
}
if (p.BitSize <= 16)
{
return(Constant.Create(p, -Convert.ToInt32(c) & 0xFFFF));
}
if (p.BitSize <= 32)
{
return(Constant.Create(p, -Convert.ToInt32(c)));
}
return(Constant.Create(p, -Convert.ToInt64(c)));
}
else if (p == PrimitiveType.Real32)
{
return(Constant.Real32(-ToFloat()));
}
else if (p == PrimitiveType.Real64)
{
return(Constant.Real64(-ToDouble()));
}
else
{
throw new InvalidOperationException(string.Format("Type {0} doesn't support negation.", p));
}
}
public static Constant Log2()
{
// log(10) of 2
return(Constant.Real64(0.30102999566398119521373889472449));
}
public static Constant Ln2()
{
return(Constant.Real64(0.69314718055994530941723212145818));
}
public static Constant LgE()
{
// log(2) of e.
return(Constant.Real64(1.4426950408889634073599246810019));
}
public static Constant Lg10()
{
// log(2) of 10.
return(Constant.Real64(3.3219280948873623478703194294894));
}
public static Constant Pi()
{
return(Constant.Real64(Math.PI));
}
public static Constant DoubleFromBitpattern(long bits)
{
return(Constant.Real64(BitConverter.Int64BitsToDouble(bits)));
}
