| field | The name of a DECIMAL, REAL, or alien data TYPE field. |
| Return: | ISVALID returns a single Boolean value. |
The ISVALID function validates that the field contains a legal value. If the contents are not valid for the declared value type of the field (such as hexadecimal values greater than 9 in a DECIMAL), ISVALID returns FALSE, otherwise it returns TRUE.
Example:
MyVal := IF(ISVALID(Infile.DecimalField),Infile.DecimalField,0); //ISVALID returns TRUE if the value is legal
See Also: TYPE Structure, DECIMAL, REAL