Floating Point Arithmetic is a very complex subject to understand. I even consulted several websites on the subject, and the information is still beyond my grasp. However, I learned that Excel uses the popular standard of the design of computing systems in building the programming for spreadsheets.

I am very frustrated still, because that means what I thought I could depend on in Excel is no longer dependable. At least what I would like to know from my spreadsheet is 1 + 1 = 2. It looks like I can’t even depend on that!!!

I am most grateful to you, Carlosdl, for supplying the article, and shedding a bright light on the subject of Floating Point Arithmetic.

Firstly, I am sorry, Chippy088, if I offended you. I could perceive quite clearly the anger in your writing. I did not mean to offend you. I sincerely thank you for your contribution. Again, I am deeply sorry.

Secondly, thank you, Carlosdl, for providing me with the article. It is quite long and detailed, and will take me a while to read, absorb, and understand it. I am hoping that after I would have read it, we (all of us) can continue our discussion.

What you have asked for has been answered. It is not an excel fault but a user fault. i.e. you do not know what you are talking about,or I do not understand your english.

If you insist on using the wrong functions then i am not suprised that it will not do what you want. You asked for our help, if you will not take it then why bother to ask……

However, on your sheet, Excel is returning 2 because you failed to format the cell to show 9 decimal places. You are not showing enough decimal places.

Furthermore, the original problem arose because Excel is using what is not displayed (through formatting) to perform calculations. And I contend that what is not displayed is erroneous.

Additionally, using the INTEGER (INT) function is no help because I contend that there is a calculation problem with EXCEL, not a display problem or a function problem or anything else (yet), but a fundamental calculation problem.

result H41 l41 a41
1.999999999 95 3 346.95

(I left the formating to all cells to excel. it shows the 1.999999999 here, but my sheet shows it as 2. Column headings are your references.)

Check your formating, and whether excel is using the decimal portion of the previous cell results in your calc. What is displayed, is not always what is used in the calculations.

I would try looking at ‘INT’ if you just want to use the integer portion of the cell result.

Hope this helps

Result: 95.0000000000003

According to you, Carlosdl, the real number is 95.0000000000000 and Excel is just displaying it wrongly. Let’s do a calculation, then. Take the result that Excel is returning and add 0.0000000000001. The result is 95.0000000000004. According to your theory Excel should return 95.0000000000001 but is displaying the wrong figure. Be that as it may, if it is a calculation problem with Excel or if it is a display problem with Excel, something must be done to remedy the situation.

Another example:

=(127.95-127)*100

gives 95.0000000000003

But if you use the cell containing this formula to perform some calculations, the results are correct, so it seems to be just a display problem.