division of float numbers

Hi, MATLAB is usually showed the result of float number with four digits, how we can get only two digits after the decimal point. Ex: a = 532.7589 I want to get it as a=532.76 and please I DONOT want to use fprintf('%.2f', a) Thanks in advance

Answer 1

[Star Strider]

See the documentation for the format (link) function.

Specifically:

format bank

will do what you want.

[Guillaume]

@Fatina, note that you're in luck that there is such a format predefined (bank). There is no way to have a custom display different than the few predefined by format. So if you wanted 3 digits for example, you would have to use fprintf.

[Fatina Shukur]

The issue with the bank format, it shows all the numbers with two decimal points even if the number is an integer number i.e if I have x=34 I will get it as x=34.00

[Walter Roberson]

Yes? You did not ask for anything different.

Question: what output would you want for 34.00389 ? How about for 34.00000000000000710542735760100185871124267578125 ?

[Star Strider]

@Walter — Thank you!

[Fatina Shukur]

Are you answering my question OR you have such a question as what you have written in above!?

[Walter Roberson]

Your original question has already been answered: To output with two decimal places, use "format bank".

You seem to have a new question in which you want some numbers to be output with two decimal places, and other numbers to be output with no decimal places. I am asking you to clarify your needs: in this new question, what would be the desired output for 34.00389 and for 34.00000000000000710542735760100185871124267578125 ?

[Fatina Shukur]

it is the same question, I have a set of different numbers, some are integers, and others are floats. if I set the format to bank in the command window, I will get all the numbers even the integers with two decimal points, however, I would like to get only two digits after the decimal point when I have float number, and the integer number should be displayed as it is, so s=4.548934 should be s=4.55 and n=89 should be n=89 NOT 89.00

is it clear?

[Star Strider]

If you want what you describe, you have to use the round function in addition to format short g:

format shortg
x = [4.548934 89.0009];
x = round(x,2)

x =
         4.55           89

You have to live with the constraints of the software you use.

[Walter Roberson]

Now, 34.00000000000000710542735760100185871124267578125 is not an integer, but it rounds to an integer -- it is the very next representable number after 34 exactly. Should 34.00000000000000710542735760100185871124267578125 be displayed as 34 or as 34.00 ?