PK77800: MATHLIB.ROUND DOES NOT WORK

APAR status

• Closed as program error.

Error description

• Client using Rational Business Developer V7.1.0.1 encounters a p
  roblem with the MATHLIB.ROUNT function.
  In the case where c = MathLib.round(c, -2); the number of decima
  l positions is known (5) and the function processes the result c
  orrectly.
  
  
  
  In the case where there is no target (your usage of MathLib.roun
  d(a * b / 100, -2) as an argument to a function), the preprocess
  or is not correctly calculating the number of decimal positions
  for the value of a * b / 100 for the temporary variable, but is
  instead using the maximum number defined based on the variables
  being used in the expression (in this example 3). What the error
   is, is that when multiplication, division, exponentiation, etc
  are used, this should affect the number of decimal digits to be
  used for the temporary variable, as the number should be increas
  ing based upon a formula. Because the number of decimals is too
  few in the temporary variable, some of the result for the tempor
  ary variable is lost, and the round function comes up short.
  
  This problem would only happen when an expression is used as the
   function argument, instead of a specific variable.
  
  In the case where c = MathLib.round(c, -2); the number of decima
  l positions is known (5) and the function processes the result c
  orrectly.
  
  In the case where there is no target (your usage of MathLib.roun
  d(a * b / 100, -2) as an argument to a function), the preprocess
  or is not correctly calculating the number of decimal positions
  for the value of a * b / 100 for the temporary variable, but is
  instead using the maximum number defined based on the variables
  being used in the expression (in this example 3). What the error
   is, is that when multiplication, division, exponentiation, etc
  are used, this should affect the number of decimal digits to be
  used for the temporary variable, as the number should be increas
  ing based upon a formula. Because the number of decimals is too
  few in the temporary variable, some of the result for the tempor
  ary variable is lost, and the round function comes up short.
  
  
  
  This problem would only happen when an expression is used as the
   function argument, instead of a specific variable.
  
  
  LOCAL FIX:
  

Local fix

Problem summary

• The problem resulted because the temporary variable used to
  hold the argument to the round function was created with a
  type that was not sufficient to hold the value of the
  operations.
  

Problem conclusion

• The algorithm for computing the type of the temporary
  variable has been changed (in both the IRs and in Cobol
  generation).
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  RATL BUS DEV

• Fixed component ID

  5724S5000

Applicable component levels

• R710 PSN

     UP