/// <summary>
/// Converts <paramref name="src"/> to <paramref name="dstType"/> datatype, possibly with loss of precision or overflow.
/// </summary>
/// <remarks>Currently, conversions between all primitive numeric CIL types, enum types, and System#-intrinsic datatypes
/// Signed, Unsigned, SFix, UFix and StdLogicVector are supported.</remarks>
/// <exception cref="ArgumentNullException">if <paramref name="dstType"/> is null</exception>
/// <exception cref="NotImplementedException">if there is no known conversion to <paramref name="dstType"/></exception>
public static object ConvertLong(long src, TypeDescriptor dstType)
{
Contract.Requires <ArgumentNullException>(dstType != null, "dstType");
if (dstType.CILType.Equals(typeof(Signed)))
{
return(Signed.FromLong(src, SFix.GetFormat(dstType).IntWidth));
}
else if (dstType.CILType.Equals(typeof(Unsigned)))
{
return(Unsigned.FromBigInt(new System.Numerics.BigInteger(src), UFix.GetFormat(dstType).IntWidth));
}
else if (dstType.CILType.Equals(typeof(SFix)))
{
return(SFix.FromSigned(Signed.FromLong(src, SFix.GetFormat(dstType).IntWidth), SFix.GetFormat(dstType).FracWidth));
}
else if (dstType.CILType.Equals(typeof(StdLogicVector)))
{
return(StdLogicVector.FromLong(src, StdLogicVector.GetLength(dstType)));
}
else
{
return(ConvertLong(src, dstType.CILType));
}
}
public static Unsigned Abs(Signed value)
{
return(value.BigIntValue.Sign < 0 ?
Unsigned.FromBigInt(-value.BigIntValue, value.Size) :
Unsigned.FromBigInt(value.BigIntValue, value.Size));
}
