sunayana.sarangi

 Profile Answers by sunayana.sarangi 

• Aug 2nd, 2007

 

One of the use cases of HIGH-VALUE and LOW-VALUE are in the Binary Search using SEARCH ALL. If the table to be searched is only partially populated, the SEARCH ALL may not work correctly. If the table is ordered in ascending sequence then, to get the SEARCH ALL to function correctly, the unpopulated elements must be filled with HIGH-VALUES. If the table is in descending sequence, the unpopulated elements should be filled with LOW-VALUES.

lfrank

 Profile Answers by lfrank 

• Jan 8th, 2008

 

LOW-VALUE represents X'00' and HIGH-VALUE represents X'FF'. These equate to  the lower and upper limits of the collating sequence. All other values fall in between.

There are many uses. Say you wanted to know who had the highest and lowest sales for the month. Many people have specific "first time code" to read the first record and move the sales amount to the HIGH-SALE and LOW-SALE fields.

Define the fields as   05  HIGH-SALE  PIC 9(5)    VALUE LOW-VALUES. 
                      and     05  LOW-SALE   PIC 9(5)    VALUE HIGH-VALUES.

Then simply compare the input sales amount to HIGH-SALE and LOW-SALE and move it to HIGH-SALE when it is higher than the current value and to LOW-SALE when it is lower than the current value. 

Meetal

• Feb 6th, 2012

 

One correction in example given above post ofr Ifrank. We can not move HIGH-VALUES/LOW-VALUES to PIC 9 (NUMERIC FIELD) . We can onlye move in PIC X (ALPHANUMERIC)