How to get the number of decimal places in a given number
I have a scenario where I need to get the number of decimal digits after the decimal point. Please refer below ex.
I want a function where I give this number as input and the function should return 4. As there are 4 decimal digits including trailing zeros.
var number = 123.1000;
Kindly someone help.
Karthik K R
Solved! Go to Solution.
var number_to_string = "123.1000";
var length = number_to_string.length;
var position = number_to_string.indexOf(".")+1;
You may need to convert duble to string.
Using Python you can do it in very simple way:
def decimals(x): return len(str(x - int(x))[2:])
Algorithm is the following:
0. Let say: x = 10.1234
1. (x - int(x)) or (x % 1) -> remain only floating signs: 0.1234
2. (str(x - int(x))[2:]) -> convert it into the string beginning after the floating point: "1234"
3. The length of the string is the number of decimals.
P.S. But in some cases you can have a rounding issues... So my solution is far from ideal...
It looks like better to use aqConvert.FloatToStr() method and then parse the result using regular expression:
import re def decimals(yourFloat): converted_num = aqConvert.FloatToStr(yourFloat) pattern = re.compile("\.[0-9]*") res = re.search(pattern, converted_num) if res is not None: res = res.group(0) return len(res[1:])