*COMDECK SKIPFB 
          IDENT  SKIPFB 
          ENTRY  SKIPFB 
          SYSCOM B1 
          TITLE  SKIPFB - SKIP FILES BACKWARD.
          COMMENT SKIP FILES BACKWARD.
          COMMENT COPYRIGHT CONTROL DATA CORP. 1978.
 SKIPFB   SPACE  4,10 
***       SKIPFB - SKIP FILES BACKWARD. 
* 
*         CALL SKIPFB (FILE,N,R)
* 
*         ENTRY  (FILE) = FIRST WORD OF THE FET.
*                (N) = NUMBER OF FILES. 
*                (R) = RECALL, IF .NE. 0, RECALL IS REQUESTED.
* 
*         SKIPFB(FILE,N,R);     (*SYMPL* CALL)
* 
*         ENTRY  FILE, AN ARRAY THAT CONTAINS THE FET.
*                N, AN ITEM CONTAING THE NUMBER OF FILES TO SKIP. 
*                (R) = RECALL, IF .NE. 0, RECALL IS REQUESTED.
* 
*         USES   X - 2, 3.
*                A - 2, 3.
*                B - 1. 
* 
*         MACROS SKIPFB.
  
  
  
 SKIPFB   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
          SKIPFB X1,X3
          EQ     SKIPFBX
  
 SKI1     SKIPFB X1,X3,R
          EQ     SKIPFBX
  
          END 
