Search results
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.
- BINARY (COMP or COMP-4)
BINARY data and synonyms COMP and COMP-4 are the two's...
- BINARY (COMP or COMP-4)
23 lut 2017 · In IBM's Enterprise COBOL, there are four ways to define a binary field: COMP; COMP-4; BINARY; COMP-5. How does that come about? A COMPUTATIONAL field (COMP for short, and here short for "all COMPUTATIONAL fields") is "implementor defined".
COMP (also known as BINARY) is a USAGE type that stores signed decimal numbers in pure binary format. This format is often used for arithmetic operations as it provides efficient storage and fast computation.
A computational item is a value used in arithmetic operations. It must be numeric. If a group item is described with a computational usage, the elementary items within the group have that usage. The maximum length of a computational item is 18 decimal digits, except for a PACKED-DECIMAL item.
BINARY data and synonyms COMP and COMP-4 are the two's complement data representation in COBOL. BINARY data is declared with a PICTURE clause as with internal or external decimal data but the underlying data representation is as a halfword (2 bytes), a fullword (4 bytes) or a doubleword (8 bytes).
COBOL Tutorial - COBOL programming - This tutorial covers most imporant topics of COBOL topics like PERFORM, CALL, STRING,UNSTRING,COMP,COMP-3,INSPECT,FILE,SEQUENTIAL FILE,INDEXED FILE etc.. once can post their cobol questions here in mainframe gurukul forums
The USAGE clause explains how data is stored in memory and how the calculations are performed on that data. Different USAGE modes, such as BINARY, PACKED-DECIMAL, and DISPLAY, specify the internal representation of the data. The USAGE mode can impact storage requirements and the efficiency of arithmetic operations.
