What is Comp variable in COBOL?

COMP usage is a binary representation of data and stores in pure binary format. The amount of storage occupied by a binary item depends on the number of decimal digits defined in its PICTURE clause.

What is Comp-3 variables COBOL?

COBOL Comp-3 is a binary field type that puts (“packs”) two digits into each byte, using a notation called Binary Coded Decimal, or BCD. This halves the storage requirements compared to a character, or COBOL “display”, field.

How do I convert comp to numeric in COBOL?

RE: moving COMP value to numeric value

1. 01 val1-display PIC 99.99999. Very Important! I am presuming that you have remembered to initialize. the val1 by coding :-
2. MOVE 0.324 TO VAL1. So now, add.
3. MOVE VAL1 TO VAL1-DISPLAY. DISPLAY ‘VAL1-DISPLAY=>’ VAL1-DISPLAY. Let us know how you go.

How do you decide upon whether a variable should be declared as Comp Comp 1 Comp 2 Comp-3?

COMP-1 and COMP-2 should only be used when you need floating-point values. They have limited precision and will not yield accurate results in some cases, so they tend to be less used in business programs (except for financial calculations). COMP-3 variable are typically used for arithmetic calculations.

Can COBOL display Comp variable 3?

In the below file, the last 2 Bytes are COMP-3 Data. You read the Hexa-decimal value in a top-down fashion. 3. You may also DISPLAY this in COBOL, by first MOVE’ing the data to a Numeric-Edited DISPLAY Format Variable.

Why do we use comp variables in COBOL?

COMP COMP-1 COMP-2 COMP-3 COMP:Normally, a computer can store data in more than one internal form. In COBOL, a programmer is allowed to specify the internal form of the data item so as to facilitate its use in the most efficient manner. In COMP usage Data is stored as Pure Binary format internally.

What is Comp 5 in COBOL?

When numeric data is moved or stored into a COMP-5 item, truncation occurs at the binary field size rather than at the COBOL picture size limit. When a COMP-5 item is referenced, the full binary field size is used in the operation.

Can we display Comp-3 variables COBOL?

How do you convert 3 variables to alphanumeric comp?

You cannot move a COMP-3 variable to alphanumeric directly. It will not give a SOC7 error but will you give you a return code 12 stating that comp-3 and alphanumeric variables did not follow the move compatibility rule.

How do I get comp 3 values?

1. In case the COMP-3 Data, that you want to see is the data in a Mainframe File, and you would like to see the contents on TSO/ISPF, you can turn the HEX ON on the Command Line. In the below file, the last 2 Bytes are COMP-3 Data. You read the Hexa-decimal value in a top-down fashion.

How do I move a value from alphanumeric to comp?

You cannot move a COMP-3 variable to alphanumeric directly. It will not give a SOC7 error but will you give you a return code 12 stating that comp-3 and alphanumeric variables did not follow the move compatibility rule. 01 A1 PIC S9(4) COMP-3 VALUE 1234.

How is Comp-3 stored?

We can use only 9 and S in PIC Clause. We can use 9 , S , V in PIC Clause. COMP usage stores the data in half word or in full word, depending on the size of the data. COMP3 usage stores 1 digit in half byte (i.e. 4 bits) and a separate 1 bit is reserved for the sign, which is stored at the right side of the data.