return the value of the Numeric object as a double - Maple Help

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Numeric.doubleValue - return the value of the Numeric object as a double

Calling Sequence

double doubleValue() throws MapleException



The doubleValue function returns the value represented in the Numeric as a Java double.  If the value does not fit exactly into a Java double, an approximation is returned.


import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example


    public static void main( String notused[] ) throws MapleException


    String mapleArgs[];

    Engine engine;

    Numeric n;

    double d;

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

    engine = new Engine( mapleArgs, new EngineCallBacksDefault(),

        null, null );

    n = (Numeric)engine.evaluate( "evalf[60](Pi):" );

    d = n.doubleValue();

    System.out.println( n );

    System.out.println( d );



Executing this code produces the following output.



See Also

ExternalCalling/Java/MapleException, OpenMaple, OpenMaple/Java/API, OpenMaple/Java/Numeric, OpenMaple/Java/Numeric/byteValue, OpenMaple/Java/Numeric/floatValue, OpenMaple/Java/Numeric/intValue, OpenMaple/Java/Numeric/isInteger, OpenMaple/Java/Numeric/longValue, OpenMaple/Java/Numeric/shortValue

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