On 23/03/2015 12:52, Steven D'Aprano wrote:
I have a numeric value, possibly a float, Decimal or (improper) Fraction,
and I want the fractional part. E.g. fract(2.5) should give 0.5.
Here are two ways to do it:
py> x = 2.5
py> x % 1
0.5
py> x - int(x)
0.5
x % 1 is significantly faster, but has the disadvantage of giving the
complement of the fraction if x is negative:
py> x = -2.75
py> x % 1
0.25
Are there any other, possibly better, ways to calculate the fractional part
of a number?
Any sparks here
http://stackoverflow.com/questions/875238/fractional-part-of-the-number-question
? I'm assuming that the reference to "pkaeding's algorithm" refers to
https://github.com/pkaeding but haven't confirmed that to be fact.
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