gandian2003 Posted January 27, 2012 Share Posted January 27, 2012 Hello *, I have script here which behaves nummerically odd (at least on all my systems). BTW: This has nothing to with v3.3.8.0. v3.3.6.1 shows exactly the same reults. ;----------SNIP-------------- $Actual = 70 $Step = 0.01 For $i=1 To 20 $Actual = $Actual + $Step ConsoleWrite (String($Actual) & @CR) Next ;----------SNIP-------------- Out put is as follows: 70.01 70.02 70.03 70.04 70.05 70.06 70.07 70.08 70.09 70.1000000000001 70.1100000000001 70.1200000000001 70.1300000000001 70.1400000000001 70.1500000000001 70.1600000000001 70.1700000000001 70.1800000000001 70.1900000000001 70.2000000000001 Maybe somebbody wants to look at it ... Cheers! Link to comment Share on other sites More sharing options...
jchd Posted January 27, 2012 Share Posted January 27, 2012 Welcome to the wonderful and surprising world of binary floating-point! What you experience is perfectly normal and has nothing to do with SQLite. You need to understand that representing real (decimal-based) numbers in binary floating-point most often gives inexact results. You can use Round() or switch to integers, dividing by the adequate factor at the end of your computation(s). This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta. SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt) Link to comment Share on other sites More sharing options...
Moderators Melba23 Posted January 27, 2012 Moderators Share Posted January 27, 2012 gandian2003,Welcome to the AutoIt forum. And welcome to the world of "floating point" numbers. This is not an Autoit problem - it has to do with the way all computers store fractional numbers. Try Googling it to find out more. But AutoIt can help by limiting the number of digits after the decimal point:$Actual = 70 $Step = 0.01 ConsoleWrite("Numbers" & @CRLF) For $i = 1 To 20 $Actual = Round($Actual + $Step, 2) ; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ConsoleWrite($Actual & @CRLF) Next ConsoleWrite(@CRLF & "Strings" & @CRLF) For $i = 1 To 20 $Actual = $Actual + $Step ConsoleWrite(StringFormat("%2.2f", $Actual) & @CRLF) ; <<<<<<<<<<<<<<<<<<<<<<<<< NextSo the problem is not too difficult to overcome. I hope this helps. M23 Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind Open spoiler to see my UDFs: Spoiler ArrayMultiColSort ---- Sort arrays on multiple columnsChooseFileFolder ---- Single and multiple selections from specified path treeview listingDate_Time_Convert -- Easily convert date/time formats, including the language usedExtMsgBox --------- A highly customisable replacement for MsgBoxGUIExtender -------- Extend and retract multiple sections within a GUIGUIFrame ---------- Subdivide GUIs into many adjustable framesGUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView itemsGUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeViewMarquee ----------- Scrolling tickertape GUIsNoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxesNotify ------------- Small notifications on the edge of the displayScrollbars ----------Automatically sized scrollbars with a single commandStringSize ---------- Automatically size controls to fit textToast -------------- Small GUIs which pop out of the notification area Link to comment Share on other sites More sharing options...
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