jv.thirdParty.expr
Class Expr

java.lang.Object
  |
  +--jv.thirdParty.expr.Expr

All Implemented Interfaces:

java.io.Serializable

public abstract class Expr

extends java.lang.Object

implements java.io.Serializable

A mathematical expression, built out of literal numbers, variables, arithmetic operators, and elementary functions. The operator names are from java.lang.Math.

Version:

07.07.99 (kp) New functions added: cot, acot, acosh, asinh, atanh, acoth, sign.
31.01.99 (kp) New functions added: cosh, sinh, tanh, coth.
00.00.96 (Darius Bacon) Original version

Author:

Darius Bacon

See Also:

Serialized Form

Field Summary

static int	ABS Absolut value.
static int	ACOS Arcus cosine.
static int	ACOSH Area cosinus hyperbolicus. (kp)
static int	ACOT Arcus cotanges. (kp)
static int	ACOTH Area cotangens hyperbolicus. (kp)
static int	ADD Binary operator.
static int	ASIN Arcus sine.
static int	ASINH Area sinus hyperbolicus. (kp)
static int	ATAN Arcus tanges.
static int	ATANH Area tangens hyperbolicus. (kp)
static int	CEIL Unary operator.
static int	COS Cosine.
static int	COSH Cosinus hyperbolicus. (kp)
static int	COT Cotanges. (kp)
static int	COTH Cotangens hyperbolicus. (kp)
static int	DIV Binary operator.
static int	EXP Exponential function.
static int	FLOOR Unary operator.
static int	LOG Natural logarithm.
static int	MUL Binary operator.
static int	NEG Negative.
static int	POW Binary operator.
static int	ROUND Unary operator.
static int	SIGN Sign of argument. (kp)
static int	SIN Sine.
static int	SINH Sinus hyperbolicus. (kp)
static int	SQRT Square root
static int	SUB Binary operator.
static int	TAN Tangens.
static int	TANH Tangens hyperbolicus. (kp)

Constructor Summary

Expr()

Method Summary

abstract double	getValue() Return the value given the current variable values.
static Expr	make_app1(int rator, Expr rand)
static Expr	make_app2(int rator, Expr rand0, Expr rand1)
static Expr	make_literal(double v)
static Expr	make_var_ref(Variable var)

Methods inherited from class java.lang.Object

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

Field Detail

ADD

public static final int ADD

Binary operator.

SUB

public static final int SUB

Binary operator.

MUL

public static final int MUL

Binary operator.

DIV

public static final int DIV

Binary operator.

POW

public static final int POW

Binary operator.

ABS

public static final int ABS

Absolut value.

ACOS

public static final int ACOS

Arcus cosine.

ASIN

public static final int ASIN

Arcus sine.

ATAN

public static final int ATAN

Arcus tanges.

ACOT

public static final int ACOT

Arcus cotanges. (kp)

CEIL

public static final int CEIL

Unary operator.

COS

public static final int COS

Cosine.

EXP

public static final int EXP

Exponential function.

FLOOR

public static final int FLOOR

Unary operator.

LOG

public static final int LOG

Natural logarithm.

NEG

public static final int NEG

Negative.

ROUND

public static final int ROUND

Unary operator.

SIN

public static final int SIN

Sine.

SQRT

public static final int SQRT

Square root

TAN

public static final int TAN

Tangens.

COT

public static final int COT

Cotanges. (kp)

SINH

public static final int SINH

Sinus hyperbolicus. (kp)

COSH

public static final int COSH

Cosinus hyperbolicus. (kp)

TANH

public static final int TANH

Tangens hyperbolicus. (kp)

COTH

public static final int COTH

Cotangens hyperbolicus. (kp)

ASINH

public static final int ASINH

Area sinus hyperbolicus. (kp)

ACOSH

public static final int ACOSH

Area cosinus hyperbolicus. (kp)

ATANH

public static final int ATANH

Area tangens hyperbolicus. (kp)

ACOTH

public static final int ACOTH

Area cotangens hyperbolicus. (kp)

SIGN

public static final int SIGN

Sign of argument. (kp)

Constructor Detail

Expr

public Expr()

Method Detail

getValue

public abstract double getValue()

Return the value given the current variable values.

make_literal

public static Expr make_literal(double v)

make_var_ref

public static Expr make_var_ref(Variable var)

make_app1

public static Expr make_app1(int rator,
                             Expr rand)

Parameters:

rator - unary operator

rand - operand

make_app2

public static Expr make_app2(int rator,
                             Expr rand0,
                             Expr rand1)

Parameters:

rator - binary operator

rand0 - left operand

rand1 - right operand