SimoBITS - The COBOL Source Code
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Bit Manipulation with COBOL SimoBITS - The COBOL Source Code http://www.simotime.com |
| When technology complements business | Copyright © 1987-2010 SimoTime Enterprises All Rights Reserved |
This document provides a listing of the COBOL source code for the callable routine SimoBITS. Additional information about this program may be obtained by sending an e-mail to: helpdesk@simotime.com
The SimoBITS routine (or callable program) will convert the bit information in a single byte to or from an eight-byte field of COBOL accessible zeroes and ones.
The following will expand a single byte into eight bytes of 0's or 1's based on the bit settings within the one byte field.
MOVE X'55' to BTS-PASS-BITS
MOVE 'EXPAND ' to BTS-PASS-REQUEST
CALL 'SIMOBITS' using BTS-PASS-AREA
In the preceding example the contents of BTS-PASS-BYTES field will be '01010101' upon return from the call to SIMOBITS.
The following will translate an eight character field of 0's and 1's to a one byte field with the bits set to match to 0's and 1's of the eight character field.
MOVE '11111111' to BTS-PASS-BYTES
MOVE 'COMPRESS' to BTS-PASS-REQUEST
CALL 'SIMOBITS' using BTS-PASS-AREA
In the preceding example the contents of BTS-PASS-BITS field will be X'FF' or high-value upon return from the call to SIMOBITS.
A copy file is provided to define the pass area to be used when calling SimoBITS. The following statement is required in the WORKING STORAGE section of the calling program.
COPY PASSBITS.
The following is the COBOL Source Code.
IDENTIFICATION DIVISION.
PROGRAM-ID. SIMOBITS.
AUTHOR. SIMOTIME ENTERPRISES.
*****************************************************************
* Copyright (C) 1987-2009 SimoTime Enterprises, LLC. *
* *
* All rights reserved. Unpublished, all rights reserved under *
* copyright law and international treaty. Use of a copyright *
* notice is precautionary only and does not imply publication *
* or disclosure. *
* *
* Permission to use, copy, modify and distribute this software *
* for any commercial purpose requires a fee to be paid to *
* SimoTime Enterprises. Once the fee is received by SimoTime *
* the latest version of the software will be delivered and a *
* license will be granted for use within an enterprise, *
* provided the SimoTime copyright notice appear on all copies *
* of the software. The SimoTime name or Logo may not be used *
* in any advertising or publicity pertaining to the use of the *
* software without the written permission of SimoTime *
* Enterprises. *
* *
* Permission to use, copy and modify this software for any *
* non-commercial purpose and without fee is hereby granted, *
* provided the SimoTime copyright notice appear on all copies *
* of the software. The SimoTime name or Logo may not be used *
* in any advertising or publicity pertaining to the use of the *
* software without the written permission of SimoTime *
* Enterprises. *
* *
* SimoTime Enterprises makes no warranty or representations *
* about the suitability of the software for any purpose. It is *
* provided "AS IS" without any express or implied warranty, *
* including the implied warranties of merchantability, fitness *
* for a particular purpose and non-infringement. SimoTime *
* Enterprises shall not be liable for any direct, indirect, *
* special or consequential damages resulting from the loss of *
* use, data or projects, whether in an action of contract or *
* tort, arising out of or in connection with the use or *
* performance of this software *
* *
* SimoTime Enterprises *
* 15 Carnoustie Drive *
* Novato, CA 94949-5849 *
* 415.883.6565 *
* *
* RESTRICTED RIGHTS LEGEND *
* Use, duplication, or disclosure by the Government is subject *
* to restrictions as set forth in subparagraph (c)(1)(ii) of *
* the Rights in Technical Data and Computer Software clause at *
* DFARS 52.227-7013 or subparagraphs (c)(1) and (2) of *
* Commercial Computer Software - Restricted Rights at 48 *
* CFR 52.227-19, as applicable. Contact SimoTime Enterprises, *
* 15 Carnoustie Drive, Novato, CA 94949-5849. *
* *
*****************************************************************
* This program is provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
* *
*****************************************************************
*
*****************************************************************
* Source Member: SIMOBITS.CBL
* Copy Files: PASSBITS.CPY
*****************************************************************
*
* SIMOBITS - A called routine for bit and byte conversions.
*
* CALLING PROTOCOL
* ----------------
* Use standard COBOL calling procedures.
*
* DESCRIPTION
* -----------
* This program will do Bit and Byte conversions.
*
****************************************************************
*
* MAINTENANCE
* -----------
* 1989/02/27 Simmons, Created program.
* 1989/02/27 Simmons, no changes to date
*
*****************************************************************
*
DATA DIVISION.
WORKING-STORAGE SECTION.
*
*****************************************************************
* Data-structure for Title and Copyright...
* ------------------------------------------------------------
01 SIM-TITLE.
05 T1 pic X(11) value '* SIMOBITS '.
05 T2 pic X(34) value 'Convert between Bits and Bytes '.
05 T3 pic X(10) value ' v06.11.14'.
05 T4 pic X(24) value ' http://www.simotime.com'.
01 SIM-COPYRIGHT.
05 C1 pic X(11) value '* SIMOBITS '.
05 C2 pic X(20) value 'Copyright 1987-2009 '.
05 C3 pic X(28) value ' SimoTime Enterprises, LLC '.
05 C4 pic X(20) value ' All Rights Reserved'.
01 FIRST-TIME pic X value 'Y'.
01 A-COMPILE-TIME pic X value 'A'.
01 A-EBC pic X value x'C1'.
01 A-ASC pic X value x'41'.
01 COMPRESS pic X(8) value 'COMPRESS'.
01 EXPAND pic X(8) value 'EXPAND '.
01 BIT-ON pic 9 value 1.
01 BIT-OFF pic 9 value 0.
01 MESSAGE-BUFFER.
05 MESSAGE-HEADER pic X(11) value '* SIMOBITS '.
05 MESSAGE-TEXT pic X(68).
01 TWO-BYTES.
05 TWO-BYTES-01 pic X.
05 TWO-BYTES-02 pic X.
01 TWO-BYTES-BINARY redefines TWO-BYTES
pic S9(4) binary.
01 IX-1 pic 99 value 0.
01 REGISTER-1 pic S9(5) value 0.
*****************************************************************
LINKAGE SECTION.
COPY PASSBITS.
*****************************************************************
PROCEDURE DIVISION using BTS-PASS-AREA.
MAIN-ROUTINE.
move ZERO to BTS-PASS-RESULT
if FIRST-TIME not = 'N'
perform Z-POST-COPYRIGHT
move 'N' to FIRST-TIME
end-if
evaluate BTS-PASS-REQUEST
when COMPRESS perform COMPRESS-BYTES
when EXPAND perform EXPAND-BITS
when OTHER perform INVALID-REQUEST
end-evaluate
add BTS-PASS-RESULT to ZERO giving RETURN-CODE
GOBACK.
*****************************************************************
INVALID-REQUEST.
display '* SIMOBITS, INVALID REQUEST, ' BTS-PASS-REQUEST
add 16 to ZERO giving BTS-PASS-RESULT
exit.
*****************************************************************
* Input: BTS-PASS-BYTES, an eight byte field
* Output: BTS-PASS-BITS, a one byte field (8-bits)
*
* For each byte that is a one in the BTS-PASS-BYTES field the
* corresponding bit in the BTS-PASS-BITS field is set to ON (1)
*
* For each byte that is zero in the BTS-PASS-BYTES field the
* corresponding bit in the BTS-PASS-BITS field is set to OFF (0).
*
* Example:
* BTS-PASS-BYTES = '01010101' then BTS-PASS-BITS set to x'55'
*****************************************************************
COMPRESS-BYTES.
subtract TWO-BYTES-BINARY from TWO-BYTES-BINARY
add 1 to ZERO giving IX-1
add 128 to ZERO giving REGISTER-1
perform until IX-1 GREATER THAN 8
if BTS-PASS-BYTES(IX-1:1) = BIT-ON
add REGISTER-1 to TWO-BYTES-BINARY
else
if BTS-PASS-BYTES(IX-1:1) not = BIT-OFF
move '8-Byte string must be zeroes or ones...'
to MESSAGE-TEXT
perform Z-POST-MESSAGE
add 8 to IX-1
add 8 to ZERO giving BTS-PASS-RESULT
end-if
end-if
divide 2 INTO REGISTER-1
add 1 to IX-1
end-perform
move TWO-BYTES-02 to BTS-PASS-BITS
exit.
*****************************************************************
* Input: BTS-PASS-BITS, a one byte field (8-bits)
* OUTPUT: BTS-PASS-BYTES, an eight byte field
*
* For each bit that is on in BTS-PASS-BITS set the
* corresponding byte in BTS-PASS-BYTES to a value of one.
*
* For each bit that is off in BTS-PASS-BITS set the
* corresponding byte in BTS-PASS-BYTES to a value of zero.
*
* Example:
* BTS-PASS-BITS = x'55' then BTS-PASS-BYTES will be '01010101'
*****************************************************************
EXPAND-BITS.
subtract TWO-BYTES-BINARY from TWO-BYTES-BINARY
add 1 to ZERO giving IX-1
add 128 to ZERO giving REGISTER-1
move BTS-PASS-BITS to TWO-BYTES-02
perform 8 times
if TWO-BYTES-BINARY = REGISTER-1
or TWO-BYTES-BINARY > REGISTER-1
move BIT-ON to BTS-PASS-BYTES(IX-1:1)
subtract REGISTER-1 from TWO-BYTES-BINARY
else
move BIT-OFF to BTS-PASS-BYTES(IX-1:1)
end-if
divide 2 INTO REGISTER-1
add 1 to IX-1
end-perform
exit.
*****************************************************************
* Display the Copyright data-structure...
* ------------------------------------------------------------
Z-POST-COPYRIGHT.
display SIM-TITLE upon console
display SIM-COPYRIGHT upon console
exit.
Z-POST-MESSAGE.
display MESSAGE-BUFFER upon console
move SPACES to MESSAGE-TEXT
exit.
*****************************************************************
* This example is provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
The following (PASSBITS.CPY) is the COBOL copy file that may be used when calling SimoBITS.
*****************************************************************
* Data Structure or Pass Area used for calling SIMOBITS. *
*****************************************************************
* Copyright (C) 1987-2006 SimoTime Enterprises *
* All Rights Reserved *
*****************************************************************
* Provided by SimoTime Enterprises *
* Our e-mail address is: helpdesk@simotime.com *
* Also, visit our Web Site at http://www.simotime.com *
*****************************************************************
*
* When BTS-PASS-REQUEST is 'EXPAND ' then
* BTS-PASS-BITS (a 1-btye field of 8-bits) is analyzed
* and based on the bit settings a corresponding value of
* 0 or 1 is set in the BTS-PASS-BYTES (an 8-byte field
* of zeroes and ones).
*
* When BTS-PASS-REQUEST is 'COMPRESS' then
* BTS-PASS-BYTES (an 8-byte field of zeroes and ones) is
* analyzed and based on a value of 0 or 1 the corresponding
* bit in BTS-PASS-BITS (a 1-byte field of 8-bits) is
* switched ON or OFF.
*
01 BTS-PASS-AREA.
05 BTS-PASS-REQUEST PIC X(8).
05 BTS-PASS-RESULT PIC S9(9) COMP.
05 BTS-PASS-RECORD.
10 BTS-PASS-BITS PIC X.
10 BTS-PASS-BYTES.
15 BTS-PASS-BYTE-01 PIC X.
15 BTS-PASS-BYTE-02 PIC X.
15 BTS-PASS-BYTE-03 PIC X.
15 BTS-PASS-BYTE-04 PIC X.
15 BTS-PASS-BYTE-05 PIC X.
15 BTS-PASS-BYTE-06 PIC X.
15 BTS-PASS-BYTE-07 PIC X.
15 BTS-PASS-BYTE-08 PIC X.
*! PASSBITS - End-of-Copy File...
The purpose of this document is to provide a COBOL Source member for viewing.
Permission to use, copy, modify and distribute this software for any commercial purpose requires a fee to be paid to Simotime Enterprises. Once the fee is received by SimoTime the latest version of the software will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Enterprises.
Permission to use, copy, modify and distribute this software for a non-commercial purpose and without fee is hereby granted, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Enterprises.
SimoTime Enterprises makes no warranty or representations about the suitability of the software for any purpose. It is provided "AS IS" without any express or implied warranty, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. SimoTime Enterprises shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software.
You may view an example of a COBOL program that uses SimoBITS at http://www.simotime.com/cblbit01.htm.
You may view the complete list of SimoTime callable Modules or Driver Programs at http://www.simotime.com/simomods.htm.
The SimoZAPS Utility Program has the capability of generating a COBOL program that will do the conversion of sequential and VSAM (KSDS) files between EBCDIC and ASCII. SimoZAPS can also read a sequential file in EBCDIC format and create an ASCII/CRLF file or VSAM KSDS file in ASCII format. The conversion tables may be viewed or modified to meet unique requirements. The Hexcess/2 function provides the capability of viewing, finding or patching the contents of a file in hexadecimal.
This item will provide a link to an ASCII or EBCDIC translation table. A column for decimal, hexadecimal and binary is also included.
This document provides a quick summary of the File Status Key for VSAM data sets and QSAM files.
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| Copyright © 1987-2010 SimoTime Enterprises All Rights Reserved |
| When technology complements business |
| http://www.simotime.com |