HP 3000 Manuals

HP ALLBASE/4GL Developer Self-Paced Training Guide

Defining Numeric Constants 

Menu Path 

To access the Numeric Constants Screen: 

   1.  From the main menu, select the Dictionary option.

   2.  Select the Storage Items option.

   3.  Choose Numeric Constants.

Description 

A numeric constant is defined as a signed or unsigned number of fixed
value with a fixed number of decimal places.  A numeric constant can be
used to initialize other variables and fields, or it can be used as a
fixed comparative value when you want to test another field.

The value of the numeric constants you create will be different for each
data manager.

If you are creating the KSAM based application or the HP TurboIMAGE/iX
based application, read on below to create the record_not_found constant.

If you are creating the HP ALLBASE/SQL based application, create the
end_of_file variable in "HP ALLBASE/SQL Based Applications".

KSAM Based and HP TurboIMAGE/iX Based Applications 


          Numeric Constants Screen 

To enter the field values: 

        Field                 Entry                         Explanation 

---------------------------------------------------------------------------------------

Numeric Constant Name record_not_found      When referred to in the application, a
                                            numeric constant name is prefixed with N- .
                                            The full reference to this constant is N- 
                                            record_not_found.

Value                 19111                 The value of this numeric constant is the
                                            file error value returned by the data
                                            manager when a requested record is not
                                            found.  In this application, the numeric
                                            constant is used to test the file return
                                            status value.

          Table 7-0.  (cont.) 

        Field                 Entry                         Explanation 

---------------------------------------------------------------------------------------

Edit Code             Accept the default.   This is a display only field that shows the
                                            edit code of the variable.  If the variable
                                            value includes a + or a - sign, the display
                                            in this field is S.

Number of Decimal     Accept the default.   Display only field that shows the number of
Places                                      decimal places in the variable.  Numeric
                                            variables can have up to 9 decimal places.

To create the numeric constant and continue: 

   1.  Press the  Commit Data  function key.

   2.  Press the  Previous Menu  function key to return to the storage
       item menu.

   3.  Then turn to the section called "Defining Alphanumeric Constants".

HP ALLBASE/SQL Based Applications 


          Numeric Constants Screen 

To enter the field values for SQL: 

        Field                 Entry                         Explanation 

---------------------------------------------------------------------------------------

Numeric Constant Name end_of_file           When referred to in the application, a
                                            numeric constant name is prefixed with N- .
                                            The full reference to this constant is N- 
                                            end_of_file.

Value                 60110                 The value 60110 is the data manager error
                                            value returned if a FILE *NEXT command
                                            encounters the end or beginning of a file
                                            for the active set.  In this application,
                                            the numeric constant is used to test the
                                            file return status value.

Edit Code             Accept the default.   Display only field that shows the edit code
                                            of the variable.  If the variable value
                                            includes a + or a - sign, the display in
                                            this field is S.

Number of Decimal     Accept the default.   Display only field that shows the number of
Places                                      decimal places in the variable.  Numeric
                                            variables can have up to 9 decimal places.

To create numeric constant and continue: 

   1.  Press the  Commit Data  function key.

   2.  Press the  Previous Menu  function key to return to the storage
       item menu.

MPE/iX 5.0 Documentation