PI55336: COBOL V5.X CUSTOMERS COMPILING PROGRAMS THAT USE FLOATING POINT ARITHMETIC USING ARITH(COMPAT) MAY YIELD DIFFERENT RESULTS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Enterprise COBOL V5.x customers compiling programs that use
  floating point arithmetic using ARITH(COMPAT) may yield
  different results.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of Enterprise COBOL V5 using compiler  *
  *                 option ARITH(COMPAT) compiling and running   *
  *                 programs that use COMP-1 or COMP-2 data      *
  *                 items.                                       *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect output: Users compiling with  *
  *                      the ARITH(COMPAT) option may get        *
  *                      different computational results due to  *
  *                      rounding when using different suboption *
  *                      settings for the OPTIMIZE option.       *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: Apply provided service.                      *
  ****************************************************************
  When the ARITH(COMPAT) option is in effect, the compiler may
  pre-calculate the result of a MOVE or COMPUTE statement, or the
  generated code may calculate them during program execution. The
  method used depends on the context of the MOVE or COMPUTE
  statement, and the setting of the OPTIMIZE option. The two
  calculation methods may give different results due to rounding.
  
  FIXCAT keyword:  COB0501T/K   COB0502T/K
  

Problem conclusion

• The COBOL compiler and runtime library have been corrected to
  give consistent results when ARITH(COMPAT) option is used, and
  COMP-1 and COMP-2 data items are involved.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PI55112

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• IGZXLPKA
  

Fix information

• Fixed component name

  LE ENT COBOL LI

• Fixed component ID

  568819812

Applicable component levels

• R7A0 PSY UI34683

     UP16/01/28 P F601

• R780 PSY UI34684

     UP16/01/28 P F601

• R790 PSY UI34685

     UP16/01/28 P F601

Fix is available

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