| private Power ( double x, double y ) : double | ||
| x | double | |
| y | double | |
| return | double | |
public static object Power([NotNull] BigInteger x, long y)
{
if (y < 0)
{
return(DoubleOps.Power(x.ToFloat64(), y));
}
return(x.Power(y));
}
public static object Power(int x, int power)
{
if (power == 0)
{
return(1);
}
if (power < 0)
{
if (x == 0)
{
throw PythonOps.ZeroDivisionError("0.0 cannot be raised to a negative power");
}
return(DoubleOps.Power(x, power));
}
int factor = x;
int result = 1;
int savePower = power;
try {
checked {
while (power != 0)
{
if ((power & 1) != 0)
{
result = result * factor;
}
if (power == 1)
{
break; // prevent overflow
}
factor = factor * factor;
power >>= 1;
}
return(result);
}
} catch (OverflowException) {
return(BigIntegerOps.Power((BigInteger)x, savePower));
}
}
public static float Power(float x, float y)
{
return((float)DoubleOps.Power(x, y));
}
