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Thread: Hard test: 1 million FOR/NEXT loop

  1. #1
    thinBasic author ErosOlmi's Avatar
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    Hard test: 1 million FOR/NEXT loop

    This is an hard one: 1 million FOR/NEXT loop done inside a function.

    [code=thinbasic]
    DIM MaxCount AS LONG value 1000000

    DIM T1 AS DOUBLE
    DIM T2 AS DOUBLE

    DIM Message AS STRING
    Message = "This program will count " & MaxCount & " times.\n"
    Message += "Please press Yes to go on, NO to Stop\n"
    DIM lResult AS LONG = MSGBOX(0, Message, %MB_YESNO, "Continue?")
    IF lResult <> %IDYES THEN
    STOP
    END IF

    '---Speed up operations a bit
    doevents(off)

    T1 = TIMER
    Counter
    T2 = TIMER
    MSGBOX 0, "Seconds:" & $tab & $tab & FORMAT$(T2 - T1, "#0.000000")

    function Counter() as long
    Dim i, j as long
    For i = 1 To MaxCount
    INCR j
    Next
    end function
    [/code]

    Try to change Counter function with something different like:
    [code=thinbasic] function Counter() as long
    Dim i, j as long
    For i = 1 To MaxCount
    j = sin(i)
    j = cos(i)
    Next
    end function
    [/code]
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  2. #2
    thinBasic MVPs kryton9's Avatar
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    Re: Hard test: 1 million FOR/NEXT loop

    375 ms for the first one.

    1.453 seconds for the second one.
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