removing trailing zeros at the end of floating number
71 views (last 30 days)
Show older comments
I m getting the numerical result with trailing zeros even after rounding of to few decimal places for eg.:- 3.265000000000 how do i remove those zeroes and just get the value as 3.265
0 Comments
Answers (2)
DGM
on 21 Apr 2021
Edited: DGM
on 21 Apr 2021
Assuming this is for display purposes, try something like
fprintf('%6.3f\n',3.2653246546516)
gives
3.265
3 Comments
James Tursa
on 21 Apr 2021
Edited: James Tursa
on 21 Apr 2021
The trailing 0's is an artifact of converting the binary floating point bit pattern into a decimal number for display purposes, so this is just a display issue. The number isn't stored in decimal so those decimal 0's you are worried about don't exist in the stored number. The stored number is using IEEE binary floating point format, not any decimal format. What are you doing with these numbers downstream in your code where you think these trailing 0's will cause you a problem?
Also, many decimal numbers can't be represented exactly in binary floating point anyway. So if you were to print out many more digits, there will be non-zero digits after some trailing 0's in the decimal conversion. This is the nature of using binary floating point for calculations.
Adam Danz
on 21 Apr 2021
format long
x = -3.265000000000;
str = sprintf('%g\n',x)
x = -3.2650000000001;
str = sprintf('%g\n',x)
0 Comments
See Also
Categories
Find more on Characters and Strings in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!