(12C) Decimal to Fraction

[Thomas Klemm]

(08-09-2018 09:27 AM)Dieter Wrote:  Then I wonder how exactly this Python diff() command works. Its arguments here are just the decimal input and a denominator – but not the corresponding numerator. So how does this work in detail?

I assume that this is just the same function that I used:

Code:

def diff(f, d):
    n = round(d * f, 0)
    return abs(f - n / d)

Quote:For instance, what is the value for diff(pi, 106) and diff(pi, 113)?

>>> from math import pi
>>> diff(pi, 106)
8.32196275291075e-05
>>> diff(pi, 113)
2.667641894049666e-07


HTH
Thomas