public BigNumber Ceil()
{
BigNumber dst = new BigNumber();
BigNumber.Ceil(dst, this);
return(dst);
}
static int M_exp_compute_nn(ref int n, BigNumber b, BigNumber a)
{
BigNumber tmp0, tmp1;
String cp = "";
int kk;
n = 0;
tmp0 = new BigNumber();
tmp1 = new BigNumber();
BigNumber.Mul(BN_exp_log2R, a, tmp1);
if (tmp1.signum >= 0)
{
BigNumber.Add(tmp1, BigNumber.BN_OneHalf, tmp0);
BigNumber.Floor(tmp1, tmp0);
}
else
{
BigNumber.Sub(tmp1, BigNumber.BN_OneHalf, tmp0);
BigNumber.Ceil(tmp1, tmp0);
}
kk = tmp1.exponent;
cp = BigNumber.ToIntString(tmp1);
n = Convert.ToInt32(cp);
BigNumber.SetFromLong(b, (long)(n));
kk = BigNumber.Compare(b, tmp1);
return(kk);
}