Using the DECIMAL type

When calling a Java method with an expression evaluating to a DECIMAL, the runtime system converts the DECIMAL value to an instance of the com.fourjs.fgl.lang.FglDecimal class implemented in $FGLDIR/lib/fgl.jar. You can then manipulate the DECIMAL from within the Java code.

You must add $FGLDIR/lib/fgl.jar to the class path in order to compile Java code with com.fourjs.fgl.lang.FglDecimal class.

The com.fourjs.fgl.lang.FglDecimal class implements the following methods shown in the table:

Table 1. Methods of the com.fourjs.fgl.lang.FglDecimal class
Method	Description
`static int encodeTypeQualifier( int precision, int scale)`	Returns the encoded type qualifier for this decimal based on precision and scale. encoded qualifier = (precision * 256) + scale Use 255 as scale for floating point decimal.
`java.lang.String toString()`	Converts the `DECIMAL` value to a String object.
`static FglDecimal valueOf(int val)`	Creates a new `FglDecimal` object from an `int` value.
`static FglDecimal valueOf( java.lang.String val)`	Creates a new `FglDecimal` object from a `String` object representing a decimal value.

In the Java code, you can convert the com.fourjs.fgl.lang.FglDecimal to a java.lang.BigDecimal as in the following example:

public static FglDecimal divide(FglDecimal d1, FglDecimal d2){
    BigDecimal bd1 = new BigDecimal(d1.toString());
    BigDecimal bd2 = new BigDecimal(d2.toString());
    BigDecimal res = bd1.divide(bd2, BigDecimal.ROUND_FLOOR);
    return FglDecimal.valueOf(res.toString());
}

If you need to create a com.fourjs.fgl.lang.FglDecimal object in your program, you can use the valueOf() class method as in this example:

IMPORT JAVA com.fourjs.fgl.lang.FglDecimal
MAIN
  DEFINE jdec com.fourjs.fgl.lang.FglDecimal
  LET jdec = FglDecimal.valueOf("123.45")
  DISPLAY jdec.toString()
END MAIN