io.werval.util

Class Numbers

java.lang.Object

io.werval.util.Numbers

public final class Numbers
extends Object

Numbers utilities.

Method Summary

Modifier and Type	Method and Description
static int	safeIntValueOf(long aLong) Safely convert a long to an int.
static long	safeLongValueOfMultiply(long... longs) Safely compute the product of the given longs.
static long	safeLongValueOfSum(long... longs) Safely compute the sum of the given longs.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

safeIntValueOf

public static int safeIntValueOf(long aLong)

Safely convert a long to an int. If the long is greater than Integer.MAX_VALUE then Integer.MAX_VALUE is returned.

If the long is lesser than Integer.MIN_VALUE then Integer.MIN_VALUE is returned.

Implementation use BigIntegers. See Math.toIntExact(long) for a throwing equivalent.

Parameters:

aLong - A long

Returns:

Converted int

safeLongValueOfSum

public static long safeLongValueOfSum(long... longs)

Safely compute the sum of the given longs. If the sum of all the longs is greater than Long.MAX_VALUE then Long.MAX_VALUE is returned.

If the sum of all the longs is lesser than Long.MIN_VALUE then Long.MIN_VALUE is returned.

Implementation use BigIntegers. See Math.addExact(long, long) for a throwing equivalent.

Parameters:

longs - longs to sum

Returns:

Computed sum

safeLongValueOfMultiply

public static long safeLongValueOfMultiply(long... longs)

Safely compute the product of the given longs. If the product of all the longs is greater than Long.MAX_VALUE then Long.MAX_VALUE is returned.

If the product of all the longs is lesser than Long.MIN_VALUE then Long.MIN_VALUE is returned.

Implementation use BigIntegers. See Math.multiplyExact(long, long) for a throwing equivalent.

Parameters:

longs - longs to multiply

Returns:

Computed product