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reduce-historical
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top-loop.hlp

top-loop.hlp 1001 B
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  1. TopLoop(TopLoopRead!*, TopLoopPrint!*, TopLoopEval!*, TopLoopName!*,
    2. 

  2. ----------------------------------------------------------------
    3. 

  3. 		       WelcomeBanner):NIL
    4. 

  4.                        ------------------
    5. 

  5. 

  6. This function is called to establish a new TopLoop (currently for
    7. 

  7. Standard LISP, RLISP, and BREAK).
    8. 

  8. 

  9. It prints the WelcomeBanner, and then invokes a "READ-EVAL-PRINT" loop,
    10. 

  10. using the given functions. TopLoop provides a standard History and
    11. 

  11. timing mechanism, retaining on a list (HistoryList!*) the input
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  12. and output as a list of pairs.
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  13. 

  14. TopLoop Function         Purpose
    15. 

  15. (HIST)                   Display full history.
    16. 

  16. (HIST n)                 Display history from n to present.
    17. 

  17. (HIST -n)		 Display last n entries.
    18. 

  18. (HIST n m)               Display history from n to m.
    19. 

  19. (INP n)                  Return N'th input at this level.
    20. 

  20. (REDO n)                 Revaluate N'th input.
    21. 

  21. (ANS n)                  Return N'th result.
    22. 

  22. (SETQ !*Time T)          Causes evaluation time to be printed for each command.
    23. 

  23.