Il 03/09/2021 22:09, Nacnud Nac ha scritto:
Hi,
Is there a quick way to get the number of bits required to store the value in a
Decimal class?
What obvious thing am I missing? I'm working with really large integers, say,
in the order of 5_000_000 of ASCII base 10 digits.
It seems the function mpd_sizeinbase would be a nice thing to be able to
call.
It'd be nice to just be able to tell the "size of data", or something like that, that was
stored in the *data? I note there is len "field" in the structure mpd_t
Sorry for the dumb question
Thanks,Duncan
to semplfy the example I'll use the value 100:
value="100"
exponent in base 10 is len(value) - 1 # (1 * 10^6)
now need change from base 10 to base 2: newexp = 6 / log(2) # 19 (more
or less)
you will need newexp + 1 bits to represent the number: 2^20 = 1.048.576
hope helps
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