BigIntegerMath divide() function | Guava | Java
Last Updated :
15 Nov, 2018
The method divide(BigInteger p, BigInteger q, RoundingMode mode) of Guava’s BigIntegerMath class returns the result of dividing p by q, rounding using the specified RoundingMode.
Syntax:
public static BigInteger divide(BigInteger p,
BigInteger q,
RoundingMode mode)
Parameters: This method takes the following parameters:
- p: The BigInteger dividend
- q: The BigInteger divisor
- mode: The rounding mode for calculating the division of p and q.
Return Value: This method returns the result of dividing p by q, rounding using the specified RoundingMode.
Exceptions: The method throws ArithmeticException if q == 0, or if mode == UNNECESSARY and a is not an integer multiple of b.
Enum RoundingMode
Enum Constant |
Description |
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 BigIntegerMath.divide() method:
Example 1:
import java.math.*;
import com.google.common.math.BigIntegerMath;
class GFG {
public static void main(String args[])
{
BigInteger dividend1 = BigInteger.valueOf( 55 );
BigInteger divisor1 = BigInteger.valueOf( 10 );
BigInteger
quotient1
= BigIntegerMath
.divide(dividend1,
divisor1,
RoundingMode.HALF_DOWN);
System.out.println(dividend1 + " divided by "
+ divisor1
+ " with HALF_DOWN rounding mode: "
+ quotient1);
BigInteger dividend2 = BigInteger.valueOf( 55 );
BigInteger divisor2 = BigInteger.valueOf( 10 );
BigInteger
quotient2
= BigIntegerMath
.divide(dividend2,
divisor2,
RoundingMode.CEILING);
System.out.println(dividend2 + " divided by "
+ divisor2
+ " with CEILING rounding mode: "
+ quotient2);
}
}
|
Output:
55 divided by 10 with HALF_DOWN rounding mode: 5
55 divided by 10 with CEILING rounding mode: 6
Example 2:
import java.math.*;
import com.google.common.math.BigIntegerMath;
class GFG {
public static void main(String args[])
{
try {
BigInteger dividend1 = BigInteger.valueOf( 25 );
BigInteger divisor1 = BigInteger.valueOf( 0 );
BigInteger
quotient1
= BigIntegerMath
.divide(dividend1,
divisor1,
RoundingMode.HALF_DOWN);
}
catch (Exception e) {
System.out.println( "Exception: " + e);
}
}
}
|
Output:
Exception: java.lang.ArithmeticException: / by zero
Reference: https://google.github.io/guava/releases/21.0/api/docs/com/google/common/math/BigIntegerMath.html#divide-java.math.BigInteger-java.math.BigInteger-java.math.RoundingMode-
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