static void M_get_log_guess(BigNumber a, BigNumber r)
{
double dd;
String buf = BigNumber.ToExpString(a, 15);
dd = BigNumber.ExpStringToDouble(buf);
BigNumber.SetFromDouble(r, (1.00001 * Math.Log(dd))); /* induce error of 10 ^ -5 */
}
static void SQrtGuess(BigNumber a, BigNumber r)
{
/* sqrt algorithm actually finds 1/sqrt */
double dd;
String buf = BigNumber.ToExpString(a, 15);
scci.NumberFormat.NumberDecimalSeparator = ".";
dd = Convert.ToDouble(buf, scci);
BigNumber.SetFromDouble(r, (1.0 / Math.Sqrt(dd)));
}
