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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.
- Computational items
A computational item is a value used in arithmetic...
- Computational items
This document describes and demonstrates the internal format of the COMP, COMP-3 and COMP-5 numeric fields using COBOL programs. The sample program will show techniques for displaying a field in a hexadecimal dump format.
20 paź 2021 · BINARY sending fields are handled as halfwords, fullwords, or doublewords when the receiver is numeric. DISPLAY will convert the entire content of binary fields with no truncation. DISPLAY would also show a value like 30000, I think the MOVE would in this case result to a zero value.
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.
14 kwi 2015 · COMP-5 does truncation to field-size, binary truncation. Compiler option TRUNC with (BIN) will treat all binary fields (COMP, COMP-4, BINARY) as "native binary" (COMP-5). Generally more instructions are generated for COMP-5 than for the others.
12 lip 2007 · COMPUTATIONAL-5 or COMP-5 (native binary): These data items are represented in storage as binary data. The data items can contain values up to the capacity of the native binary representation (2, 4 or 8 bytes), rather than being limited to the value implied by the number of nines in the picture for the item (as is the case for USAGE BINARY data).
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. COMP USAGE is a binary representation of data.
