What are the libraries of large numbers in C. A sub-instruction 256 & 512 & 1024 bit numbers is needed. Thank.
- github.com/kokke/tiny-bignum-c - zed
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2 answers
Google by the words "binint c" gives a bunch-heap. But you can start with the classics - GMP . Even on wikipedia there is an example .
Nearby, on SO there are examples of how people write their own .
KoVadim KoVadim
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- oneit is worth making a reservation that gmp is nailed to gcc with nails ... and there is a list of alternatives on the wiki. - Fat-Zer 7:43 pm
- I think that 1024 bit can be done on the knee - KoVadim February
- It’s not really a big difference to write for 256, 1k or 16k bits - in general, but what to write and what efficiency requirements there are, for example, add-multiply to do on the knee is not difficult, but I would divide by I wouldn’t write my own vigor until I cherish it at all ... - Fat-Zer
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Somehow I also needed long arithmetic. But it was impossible to use GMP, since long arithmetic was needed for microcontrollers without an operating system and a heap. I had to write my own library of C ++ templates for working with long integers. Here is the link:
https://sourceforge.net/projects/muntl/?source=frontpage&position=5
There in the archive there is a description in Russian. But this is not C, but C ++ templates.
pepsicoca1 pepsicoca1
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