Numeric.longValue
return the value of the Numeric object as a Java long
Calling Sequence
Description
Examples
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 = { "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:" );
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
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