Package com.nomagic.reportwizard.tools

Class MathTool

java.lang.Object

java.util.Observable

com.nomagic.magicreport.engine.Tool

com.nomagic.reportwizard.tools.MathTool

All Implemented Interfaces:

ITool, IVariable, Serializable, Cloneable

@OpenApiAll
public class MathTool
extends Tool

Provide basic numeric operations for report.

Since:

Jun 6, 2008

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.nomagic.magicreport.engine.ITool

ITool.HTMLString, ITool.RetainedString, ITool.Void

Field Summary

Fields inherited from class com.nomagic.magicreport.engine.Tool

context, properties

Fields inherited from interface com.nomagic.magicreport.engine.ITool

VOID

Constructor Summary

Constructors

Constructor	Description
MathTool()

Method Summary

Modifier and Type	Method	Description
static double	abs(double a)	Returns the absolute value of an double value.
static int	abs(int a)	Returns the absolute value of an int value.
static double	ceil(double a)	Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer.
static double	floor(double a)	Returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer.
static double	max(double a, double b)	Returns the greater of two double values.
static int	max(int a, int b)	Returns the greater of two int values.
static double	min(double a, double b)	Returns the smaller of two double values.
static int	min(int a, int b)	Returns the smaller of two int values.
static long	round(double a)	Returns the closest long to the argument.

Methods inherited from class com.nomagic.magicreport.engine.Tool

clone, getContext, getProperties, getProperty, getProperty, notifyObservers, setContext, setProperties

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.nomagic.magicreport.engine.ITool

clearTool

Constructor Details

MathTool

public MathTool()

Method Details

abs

public static int abs(int a)

Returns the absolute value of an int value. If the argument is not negative, the argument is returned. If the argument is negative, the negation of the argument is returned.

Parameters:

a - the argument whose absolute value is to be determined

Returns:

the absolute value of the argument.

abs

public static double abs(double a)

Returns the absolute value of an double value. If the argument is not negative, the argument is returned. If the argument is negative, the negation of the argument is returned.

Parameters:

a - the argument whose absolute value is to be determined

Returns:

the absolute value of the argument.

ceil

public static double ceil(double a)

Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer. Special cases:

• If the argument value is already equal to a mathematical integer, then the result is the same as the argument.
• If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.
• If the argument value is less than zero but greater than -1.0, then the result is negative zero.

Parameters:

a - a value.

Returns:

the smallest (closest to negative infinity) floating-point value that is greater than or equal to the argument and is equal to a mathematical integer.

floor

public static double floor(double a)

Returns the largest (closest to positive infinity) double value that is less than or equal to the argument and is equal to a mathematical integer. Special cases:

• If the argument value is already equal to a mathematical integer, then the result is the same as the argument.
• If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.

Parameters:

a - a value.

Returns:

the largest (closest to positive infinity) floating-point value that less than or equal to the argument and is equal to a mathematical integer.

max

public static int max(int a,
 int b)

Returns the greater of two int values. If the arguments have the same value, the result is that same value.

Parameters:

a - an argument.

b - another argument.

Returns:

the larger of a and b.

max

public static double max(double a,
 double b)

Returns the greater of two double values. If the arguments have the same value, the result is that same value.

Parameters:

a - an argument.

b - another argument.

Returns:

the larger of a and b.

min

public static int min(int a,
 int b)

Returns the smaller of two int values. If the arguments have the same value, the result is that same value.

Parameters:

a - an argument.

b - another argument.

Returns:

the smaller of a and b.

min

public static double min(double a,
 double b)

Returns the smaller of two double values. If the arguments have the same value, the result is that same value.

Parameters:

a - an argument.

b - another argument.

Returns:

the smaller of a and b.

round

public static long round(double a)

Returns the closest long to the argument. The result is rounded to an integer by adding 1/2, taking the floor of the result, and casting the result to type long.

Parameters:

a - a floating-point value to be rounded to a long.

Returns:

the value of the argument rounded to the nearest long value.