sauron271's blog

Largest cpp data type?
By sauron271, history, 12 hours ago, In English

Is __int 128 the largest data type in cpp or is there something bigger?

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11 hours ago, # |
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A custom one called BigInt

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11 hours ago, # |
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is this a good answer .

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    11 hours ago, # ^ |
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    some times it is needed you shouldn't use it all the time but some problems require it where big multiplication or big numbers or other factors come into account

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      11 hours ago, # ^ |
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      personally i prefer long double over __int128

      the only time i saw __int128 being used was when declaring a very big prime to use it as mod . But that was only one problem with so many other solutions without __int128

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        10 hours ago, # ^ |
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        I've only used int 128 when you have to find a number bigger than 2^64 that you eventually take modulo a prime, then convert it into long long.

        For example:

        __int128 n=1000000000000000000000000; //example

        n%=998244353;

        long long n2=n;

        cout<<n2<<endl;

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9 hours ago, # |
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Check out the Boost library. You can't use it for CF though.

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