BITSw.d

BITSw.d

Extracts bits

Category: Numeric

Syntax
Syntax Description
Details
Examples

Syntax

BITSw.d

Syntax Description

w

specifies the number of bits to read.

Default:	1
Range:	1-64

d

specifies the zero-based offset.

Range:

0-63

Details

The BITSw.d informat extracts particular bits from an input stream and assigns the numeric equivalent of the extracted bit string to a variable. Together, the w and d values specify the location of the string you want to read.

This informat is useful for extracting data from system records that have many pieces of information packed into single bytes.

Examples

input @1 value bits4.1;

Data Lines Results*

----+----1----+

B

8

*The EBCDIC binary code for a capital B is 11000010, and the ASCII binary code is 01000010.

The input pointer moves to column 2 (d=1). Then the INPUT statement reads four bits (w=4) which is the bit string 1000 and stores the numeric value 8, which is equivalent to this binary combination.

Data Lines	Results*
----+----1----+
B	8
*The EBCDIC binary code for a capital B is 11000010, and the ASCII binary code is 01000010.

Chapter Contents
Previous
Next
Top of Page