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package org.rosuda.JRI;

// JRclient library - client interface to Rserve, see http://www.rosuda.org/Rserve/

// Copyright (C) 2004 Simon Urbanek

// --- for licensing information see LICENSE file in the original JRclient distribution ---

/** Implementation of tri-state logical data type in R.

The three states are TRUE, FALSE and NA. To obtain truly boolean

value, you'll need to use {@link #isTRUE} or {@link #isFALSE} since there is

no canonical representation of RBool in boolean

@version $Id: RBool.java 2720 2007-03-15 17:35:42Z urbanek $

*/

public class RBool extends Object {

int val;

public RBool(boolean b) {

val=(b)?1:0;

};

public RBool(RBool r) {

val=r.val;

};

public RBool(int i) { /* 0=FALSE, 2=NA, anything else = TRUE */

val=(i==0||i==2)?i:1;

};

public boolean isNA() { return (val==2); };

public boolean isTRUE() { return (val==1); };

public boolean isFALSE() { return (val==0); };

public String toString() { return (val==0)?"FALSE":((val==2)?"NA":"TRUE"); };

}