// IComparable
public int CompareTo(Double42 other)
{
Binary64 a = new Binary64(_value);
Binary64 b = new Binary64(other._value);
if (a.IsNan || b.IsNan)
{
throw new ArithmeticException("CompareTo cannot accept Nans.");
}
// Round away the insignificant bits of both.
a = a.Round(INSIGNIFICANT_BITS);
b = b.Round(INSIGNIFICANT_BITS);
if (a.Bits < b.Bits)
{
return(-1);
}
else if (a.Bits > b.Bits)
{
return(1);
}
else
{
return(0);
}
}
public override int GetHashCode()
{
Binary64 a = new Binary64(_value);
// Round away the insignificant bits.
a = a.Round(INSIGNIFICANT_BITS);
return(a.GetHashCode());
}
// IEquatable
public bool Equals(Double42 other)
{
Binary64 a = new Binary64(_value);
Binary64 b = new Binary64(other._value);
if (a.IsNan || b.IsNan)
{
return(false);
}
// Round away the insignificant bits of both.
a = a.Round(INSIGNIFICANT_BITS);
b = b.Round(INSIGNIFICANT_BITS);
return(a.Bits == b.Bits);
}
public Double42 PreviousRepresentableValue()
{
Binary64 a = new Binary64(_value);
return(a.PreviousRepresentableValue(INSIGNIFICANT_BITS).Value);
}
