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2.4 Changing the type of a D.S. B

Preprocessor BDISXX calls module BDISEQ which changes the type of access of a file containing a D.S. B.

      SUBROUTINE  BDISEQ(M,INOUT,NFBDI,NIBDI,NFBSEQ,NIBSEQ)
C ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
C  AIM :  TRANSFORM A DIRECT ACCESS FILE D.S. B INTO SEQUENTIAL
C  ---    OR INVERSE
C ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

where

• M is the super array,
• INOUT = 0 to change from a sequential to direct access file,
  INOUT = 1 to perform the inverse operation,
• NFBDI, NIBDI are the file number and level of the structure B in direct access (entry or exit depending on INOUT),
• NFBSEQ, NIBSEQ are the file number and level of the structure B in sequential access (the same).