// Like GetBitCount(Abs(x)), except 0 maps to 0
public static int BitLength(BigInteger x) {
if (x.IsZero()) {
return 0;
}
return x.Abs().GetBitCount();
}
public static object Abs(BigInteger/*!*/ self) {
return Protocols.Normalize(self.Abs());
}
public static object __abs__(BigInteger x) {
return x.Abs();
}
internal static string ToBinary(BigInteger val) {
string res = ToBinary(val.Abs(), true, true);
if (val.IsNegative()) {
res = "-" + res;
}
return res;
}
public static double asinh(BigInteger value) {
if (value == 0) {
return 0;
}
// rewrote ln(v0 + sqrt(v0**2 + 1)) for precision
if (value.Abs() > 1) {
return value.Log() + Math.Log(1.0 + Complex64.Hypot(1.0, 1.0 / value));
} else {
return Math.Log(value + Complex64.Hypot(1.0, value));
}
}