Anything more precise than long double

[Moritz Beller]

Hello!

I need a floating point data type and a sqrt function* that are much
more precise than those provided by the standard library.

best regards
Moritz Beller

* Don't really know how much decimals the standard function returns.
But, as a matter of logic, it shouldn't be any better than the 15
decimals variables of type double are able to manage.

 

[Victor Bazarov]

I need a floating point data type and a sqrt function* that are much
more precise than those provided by the standard library.
[...]

Search the web for "arbitrary precision arithmetic C++"

V

 

[Chris Theis]

Hello!

I need a floating point data type and a sqrt function* that are much
more precise than those provided by the standard library.

best regards
Moritz Beller

There are a couple of libraries around that can handle large amounts of
digits, which is for example commonly needed in cryptography. They usually
handle the numbers a strings and provide also the necessary mathematical
functionality. Search the web for GMP (Gnu multiple precision) library or
MAPM.

HTH
Chris