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Re: Adding really big numbers

by frozenwithjoy (Priest)
on Feb 23, 2013 at 00:15 UTC ( #1020254=note: print w/replies, xml ) Need Help??


in reply to Adding really big numbers

Which version of Perl are you using? It works just fine for me on 5.16.1. Using bigint, I get values for every integer. Using bignum, I get values for every int and decimal (except for trailing zeroes). Without an extra module, anything over 20 digits defaults to scientific notation with 15 digits of precision.

Update: Here is some info on largest positive/negative integers that can be nadled by different setups w/o using modules: Re: maximum value of a scalar

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Re^2: Adding really big numbers
by cpaplham (Initiate) on Feb 23, 2013 at 00:20 UTC
    I'm using 5.14. I agree, it's strange.
      Odd. Works fine for me on 5.14.2. What is your operating system?
        Oddly enough, with Math::Bigint, it's working. Bizarre...
        MS Windows 7.

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[jdporter]: one prog I have has a UI which allows to input a bit mask
[jdporter]: currently it expects the bitmask to be in the form of a hex number, e.g. 0x0101
[jdporter]: but I'd like to let the user specify it as individual bits, i.e. 0b0000000100000001
[jdporter]: there is no bit/binary equivalent of hex, right?
[jdporter]: I guess that the most direct way of doing it is with some magical incantation involving unpack or whatever
[jdporter]: let me google that for me ;-)
[jdporter]: hex points explicitly to oct, which does the job. :-D

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