Numeric.doubleValue - Maple Help

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Home : Support : Online Help : Programming : OpenMaple : Java Application Programming Interface : Numeric Class : OpenMaple/Java/Numeric/doubleValue

Numeric.doubleValue

return the value of the Numeric object as a double

 

Calling Sequence

Description

Examples

Calling Sequence

double doubleValue() throws MapleException

Description

• 

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.

Examples

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.

3.14159265358979323846264338327950288419716939937510582097494

3.141592653589793

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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