File psl-1983/tests/mini-rds-wrs.red artifact a0f0f6c58f part of check-in 46c747b52c


% MINI-RDS-WRS.RED 

Fluid '(IN!* Out!*);

Procedure RDS N;
 If NULL N then RDS 0
  else begin scalar K;
      K:=IN!*;
      IN!*:=N;
      Return K
      end;

Procedure WRS N;
 If NULL N then WRS 1
  else begin scalar K;
      K:=Out!*;
      Out!*:=N;
      Return K
      end;

End;


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