return the value of the Numeric object as a Java long - Maple Help

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Numeric.longValue - return the value of the Numeric object as a Java long

Calling Sequence

long longValue() throws MapleException



The longValue function returns the value represented in the Numeric as a Java long.  If the value does not fit exactly into a Java long, an error is raised.


To determine if the value fits within a Java long, use the isLong function.


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;

    long l;

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

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

        null, null );

    n = (Numeric)engine.evaluate( "2^66:" );

    System.out.println( n.isLong() );





    catch ( MapleException me )


        System.out.println( me.getMessage() );


    n = (Numeric)engine.evaluate( "2^60:" );

    System.out.println( n.isLong() );

    l = n.longValue();

    System.out.println( l );



Executing this code produces the following output.


Error, value too large for integer[8]



See Also

ExternalCalling/Java/MapleException, OpenMaple, OpenMaple/Java/API, OpenMaple/Java/Numeric, OpenMaple/Java/Numeric/byteValue, OpenMaple/Java/Numeric/doubleValue, OpenMaple/Java/Numeric/floatValue, OpenMaple/Java/Numeric/intValue, OpenMaple/Java/Numeric/isLong, OpenMaple/Java/Numeric/shortValue

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