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What Is Packed Decimal In Cobol?

(also called “Computational-3”, “Packed Decimal”, or “Packed”) 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.

What is zoned and packed decimal?

A zoned decimal value will have the positive / negative zone ONLY in the last byte of the value. Hence a zoned decimal value of X’F1F2F3D4′ is -1234. A packed decimal value uses the first four bits of each byte to hold a numeric digit, and the last four bits to hold another digit.

What is zoned decimal?

Zoned-decimal format means that each byte of storage can contain one digit or one character. In the zoned-decimal format, each byte of storage is divided into two portions: a 4-bit zone portion and a 4-bit digit portion.

What is a packed number?

A packed number consists of the length multiplied by 2 minus 1 digits and can have a maximum of 14 decimal places. Packed numbers are used to implement fixed point numbers. The decimal places in a packed number are an attribute of its data type and are fixed for this type.

What is decimal format in Java?

DecimalFormat is a concrete subclass of NumberFormat that formats decimal numbers. It has a variety of features designed to make it possible to parse and format numbers in any locale, including support for Western, Arabic, and Indic digits.

What is 88 level used for in COBOL?

88 level number in COBOL is one of the most used declarations in mainframes development and it is considered as a special level number which is used to improve the readability of COBOL programs. As it gives a name to a condition, it is also called as ‘Condition Names’.

What is binary coded decimal number?

Binary coded decimal (BCD) is a system of writing numerals that assigns a four-digit binary code to each digit 0 through 9 in a decimal (base-10) numeral. The four-bit BCD code for any particular single base-10 digit is its representation in binary notation, as follows: 0 = 0000. 1 = 0001. 2 = 0010.

How do you convert a packable decimal to a readable format?

To change this to readable format, you need to convert these numbers into ZONED Decimal (ZD) format. This can be accomplished using SORT. p,m,BI,TO=ZD converts the BI values to ZD values. By default, a 4-byte BI value produces a 10-byte ZD value, but LENGTH=6 override the default length to produce a 6-byte ZD value.

What is type P in SAP?

Packed Numbers. The data type p for packed numbers has a value range that depends on their length and the number of decimal places. Data objects of type p can be 1 to 16 bytes long, with two places packed into each byte, and one place and the sign packed into the last byte.

How do you define decimal variable in SAP?

In the ABAP type p, the number of decimal places must be specified using the addition DECIMALS and by specifying an unsigned number directly or a corresponding numeric constant dec. The addition cannot be specified in other data types. A maximum of 14 decimal places can be specified.

What is a decimal format?

How many decimal numbers are in a packed decimal format?

Packed-decimal format means that each byte of storage (except for the low order byte) can contain two decimal numbers. The low-order byte contains one digit in the leftmost portion and the sign (positive or negative) in the rightmost portion.

What does the F mean in packed decimal format?

For explicitly signed fields the “C” indicates a positive value and “D” indicates a negative value. For unsigned (or implied positive) fields the “F” indicates a positive value. The mainframe can perform arithmetic functions on packed-decimal fields without having to convert the format.

What’s the difference between packed decimal and informat?

The packed decimal format and informat handles the representation. It is consistent between ASCII and EBCDIC platforms. Note that the S370FPDU format and informat expects to have an F in the last nibble, while packed decimal expects no sign nibble.

Can a mainframe do arithmetic in packed decimal format?

The mainframe can perform arithmetic functions on packed-decimal fields without having to convert the format. Storing numeric values in a packed-decimal format may save a significant amount of storage space. For example, on the mainframe the value 12,345 would be five (5) bytes in length (i.e. x’F1F2F3F4F5′).

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