Numeric.longValue - Maple Programming Help

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Numeric.longValue

return the value of the Numeric object as a Java long

 

Calling Sequence

Description

Examples

Calling Sequence

long longValue() throws MapleException

Description

• 

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.

Examples

import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example

{

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

    {

        String[] mapleArgs = { "java" };

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

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

        System.out.println( n.isLong() );

        try

        {

            n.longValue();

        }

        catch ( MapleException me )

        {

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

        }

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

        System.out.println( n.isLong() );

        long l = n.longValue();

        System.out.println( l );

    }

}

Executing this code produces the following output.

false

Error, value too large for integer[8]

true

1152921504606846976

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