Package ai.timefold.solver.core.impl.util

Class MathUtils

java.lang.Object

ai.timefold.solver.core.impl.util.MathUtils

public class MathUtils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final long	LOG_PRECISION

Method Summary

Modifier and Type	Method	Description
static double	getLogInBase(double base, double value)
static long	getPossibleArrangementsScaledApproximateLog(long scale, long base, int listSize, int partitions)
static long	getScaledApproximateLog(long scale, long base, long value)	Returns a scaled approximation of a log
static long	getSpeed(long count, long timeMillisSpent)

Methods inherited from class java.lang.Object

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

Field Details

LOG_PRECISION

public static final long LOG_PRECISION

See Also:

• Constant Field Values

Method Details

getPossibleArrangementsScaledApproximateLog

public static long getPossibleArrangementsScaledApproximateLog(long scale,
 long base,
 int listSize,
 int partitions)

getScaledApproximateLog

public static long getScaledApproximateLog(long scale,
 long base,
 long value)

Returns a scaled approximation of a log

Parameters:

scale - What to scale the result by. Typically, a power of 10.

base - The base of the log

value - The parameter to the log function

Returns:

A value approximately equal to scale * log_base(value), rounded to the nearest integer.

getLogInBase

public static double getLogInBase(double base,
 double value)

getSpeed

public static long getSpeed(long count,
 long timeMillisSpent)