public int CompareTo(BigFloat that)
{
Contract.Requires(exponentSize == that.exponentSize);
Contract.Requires(significandSize == that.significandSize);
if (value == "" && that.value == "")
{
int cmpThis = IsZero ? 0 : isSignBitSet ? -1 : 1;
int cmpThat = that.IsZero ? 0 : that.isSignBitSet ? -1 : 1;
if (cmpThis == cmpThat)
{
if (exponent == that.exponent)
{
return(cmpThis * significand.CompareTo(that.significand));
}
return(cmpThis * exponent.CompareTo(that.exponent));
}
if (cmpThis == 0)
{
return(-cmpThat);
}
return(cmpThis);
}
if (value == that.value)
{
return(0);
}
if (value == "NaN" || that.value == "+oo" || value == "-oo" && that.value != "NaN")
{
return(-1);
}
return(1);
}