Package org.pentaho.reporting.libraries.formula.util

Class NumberUtil

java.lang.Object

org.pentaho.reporting.libraries.formula.util.NumberUtil

public class NumberUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static BigDecimal	DELTA
static BigDecimal	INT_TEST_DELTA
static BigDecimal	MINUTE_ROUNDING_DELTA

Method Summary

Modifier and Type	Method	Description
static BigDecimal	divide(BigDecimal bd1, BigDecimal bd2)
static BigDecimal	getAsBigDecimal(Number number)
static BigDecimal	performIntRounding(BigDecimal n)	Performs a rounding to get a more reliable (int) cast.
static BigDecimal	performMinuteRounding(BigDecimal n)	Performs a rounding to get a more reliable (int) cast for minute function MinuteFunction.
static BigDecimal	performTuneRounding(BigDecimal n)
static BigDecimal	removeTrailingZeros(BigDecimal bd)

Methods inherited from class java.lang.Object

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

Field Detail

DELTA

public static final BigDecimal DELTA

MINUTE_ROUNDING_DELTA

public static final BigDecimal MINUTE_ROUNDING_DELTA

INT_TEST_DELTA

public static final BigDecimal INT_TEST_DELTA

Method Detail

getAsBigDecimal

public static BigDecimal getAsBigDecimal(Number number)

performIntRounding

public static BigDecimal performIntRounding(BigDecimal n)

Performs a rounding to get a more reliable (int) cast. This makes sure that nearly exact values like 0.9999999..9999 are correctly interpreted as 1 while exact values like 0.99 are interpreted as 0.

Parameters:

n -

Returns:

performMinuteRounding

public static BigDecimal performMinuteRounding(BigDecimal n)

Performs a rounding to get a more reliable (int) cast for minute function MinuteFunction. See org.pentaho.reporting.libraries.formula.util.NumberUtilTest#testPerformMinuteRounding() for more information.

Parameters:

n - value of the BigDecimal to be rounded

Returns:

a BigDecimal rounded value

See Also:

org.pentaho.reporting.libraries.formula.function.datetime.MinuteFunctionTest.java

performTuneRounding

public static BigDecimal performTuneRounding(BigDecimal n)

removeTrailingZeros

public static BigDecimal removeTrailingZeros(BigDecimal bd)

divide

public static BigDecimal divide(BigDecimal bd1,
                                BigDecimal bd2)
                         throws EvaluationException

Throws:

EvaluationException