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java.lang.Objectjpl.Term
jpl.Float
public class Float
Float is a specialised Term with a double field, representing a Prolog 64-bit ISO/IEC floating point value. Once constructed, a Float's value cannot be altered.
Float f = new Float( 3.14159265 );A Float can be used (and re-used) in Compound Terms. Two Float instances are equal (by .equals()) iff their (double) values are equal.
Copyright (C) 1998 Fred Dushin
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library Public License for more details.
Term
,
Compound
Constructor Summary | |
---|---|
Float(double value)
This constructor creates a Float with the supplied (double) value. |
Method Summary | |
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Term |
arg(int i)
throws a JPLException (arg(int) is defined only for Compound and Atom) |
Term[] |
args()
The (nonexistent) args of this Float |
int |
arity()
Returns the arity (0) of this Float |
java.lang.String |
debugString()
Deprecated. |
double |
doubleValue()
returns the (double) value of this Float |
boolean |
equals(java.lang.Object obj)
Two Floats are equal if they are the same object, or their values are equal |
float |
floatValue()
returns the (double) value of this Float, converted to a float |
boolean |
hasFunctor(double val,
int arity)
Tests whether this Float's functor has (double) 'name' and 'arity' |
boolean |
hasFunctor(int val,
int arity)
Tests whether this Float's functor has (int) 'name' and 'arity' (never) |
boolean |
hasFunctor(java.lang.String name,
int arity)
Tests whether this Float's functor has (String) 'name' and 'arity' (never) |
int |
intValue()
returns the (double) value of this Float, converted to an int |
long |
longValue()
returns the (double) value of this Float, converted to a long |
java.lang.String |
name()
throws a JPLException (name() is defined only for Compound, Atom and Variable) |
java.lang.String |
toString()
Returns a Prolog source text representation of this Float |
int |
type()
returns the type of this term, as one of jpl.fli.Prolog.COMPOUND, .ATOM, .VARIABLE, .INTEGER, .FLOAT etc |
java.lang.String |
typeName()
returns the name of the type of this term, as one of "Compound", "Atom", "Variable", "Integer", "Float" etc |
double |
value()
Deprecated. |
Methods inherited from class jpl.Term |
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debugString, isAtom, isCompound, isFloat, isInteger, isJFalse, isJNull, isJObject, isJRef, isJTrue, isJVoid, isVariable, listLength, put, putParams, putParams, putTerm, toString, toTermArray |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Float(double value)
value
- this Float's valueMethod Detail |
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public final Term arg(int i)
arg
in class Term
public Term[] args()
args
in class Term
public final boolean hasFunctor(java.lang.String name, int arity)
hasFunctor
in class Term
public final boolean hasFunctor(int val, int arity)
hasFunctor
in class Term
public final boolean hasFunctor(double val, int arity)
hasFunctor
in class Term
public final java.lang.String name()
name
in class Term
public final int arity()
arity
in class Term
public final int intValue()
intValue
in class Term
public final long longValue()
longValue
in class Term
public final float floatValue()
floatValue
in class Term
public final double doubleValue()
doubleValue
in class Term
public final int type()
Term
type
in class Term
public java.lang.String typeName()
Term
typeName
in class Term
public java.lang.String toString()
toString
in class java.lang.Object
public final boolean equals(java.lang.Object obj)
equals
in class java.lang.Object
obj
- The Object to compare
public double value()
public java.lang.String debugString()
debugString
in class Term
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