*COMDECK SKIPB
          IDENT  SKIPB
          ENTRY  SKIPB
          SYSCOM B1 
          TITLE  SKIPB - SKIP RECORDS BACKWARDS.
          COMMENT SKIP RECORDS BACKWARDS. 
          COMMENT COPYRIGHT CONTROL DATA CORP. 1978.
 SKIPB    SPACE  4,10 
***       SKIPB - SKIP RECORDS BACKWARDS. 
* 
*         CALL SKIPB (FILE,N,R) 
* 
*         ENTRY  (FILE) = FIRST WORD OF THE FET.
*                (N) = NUMBER OF RECORDS. 
*                (R) = RECALL, IF .NE. 0, RECALL IS REQUESTED.
* 
*         SKIPB(FILE,N,R);           (*SYMPL* CALL) 
* 
*         ENTRY  FILE, AN ARRAY THAT CONTAINS THE FET.
*                N, AN ITEM CONTAINING THE NUMBER OF RECORDS TO SKIP. 
*                (R) = RECALL, IF .NE. 0, RECALL IS REQUESTED.
* 
*         USES   X - 2, 3.
*                A - 2, 3.
*                B - 1. 
* 
*         MACROS SKIPB. 
  
 SKIPB    SUBR               ENTRY/EXIT 
          SB1    1
          SA3    A1+B1       ADDRESS OF N 
          SA2    A3+B1       GET ADDRESS OF RECALL PARAMETER
          SA3    X3          N
          SA2    X2 
          NZ     X2,SKI1     IF RECALL REQUESTED
          SKIPB  X1,X3
          EQ     SKIPBX 
  
 SKI1     SKIPB  X1,X3,R
          EQ     SKIPBX 
  
          END 
