The method sqrt(BigInteger x, RoundingMode mode) of Guava’s BigIntegerMath class returns the square root of x, rounded with the specified rounding mode.
public static BigInteger sqrt(BigInteger x, RoundingMode mode)
Parameters: This method takes the following parameters:
- x : The BigInteger number whose square-root is to be found.
- mode : The rounding mode for calculating the square-root.
Return Value: This method returns the square root of x, rounded with the specified rounding mode.
Exceptions: This method throws following exceptions:
- IllegalArgumentException: if x < 0.
- ArithmeticException: if mode is RoundingMode.UNNECESSARY and sqrt(x) is not an integer.
|CEILING||Rounding mode to round towards positive infinity.|
|DOWN||Rounding mode to round towards zero.|
|FLOOR||Rounding mode to round towards negative infinity.|
|HALF_DOWN||Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round down.|
|HALF_EVEN||Rounding mode to round towards the “nearest neighbor” unless both neighbors are equidistant, in which case, round towards the even neighbor.|
|HALF_UP||Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round up.|
|UNNECESSARY||Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.|
|UP||Rounding mode to round away from zero.|
Below examples illustrates the BifIntegerMath.sqrt() method:
Square root of 226with HALF_EVEN rounding mode is: 15 Square root of 154with FLOOR rounding mode is: 12
Exception: java.lang.IllegalArgumentException: x (-65) must be >= 0
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