How to get the same number of char as number of decimals using num2str?
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Dear all,
I want to get the decimal part of a number.
I have written this small function:
function dec = get_decimals(input)
str = num2str(input) % convert to string
index = strfind(str,'.'); % locate the comma/point
dec = str2double(str(index+1:end)); % take the end
end
However if my input has too many decimals, the function will truncate my number:
>> dec = get_decimals(3.141592653)
str =
'3.1416'
decimals =
1416
How to solve it?
Thanks in advance.
Best,
louis
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James Tursa
2022-9-16
You might look into using the fix( ) function to isolate the fractional part of your number and then work with that directly.
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James Tursa
2022-9-16
编辑:James Tursa
2022-9-16
@Louis Tomczyk As you have just learned, it is best to post your real problem up front so as to avoid answers that don't really help you. In addition to Bruno's latest comment, here are other methods for determining if a finite number is an integer value:
x==fix(x)
x==floor(x)
x==round(x)
另请参阅
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