CoCoA » CoCoALib

29 Aug 2019

14:55 Feature #1227: exgcd; solve Bezout equation

An exgcd function would be very useful.
It is used in computing the Hermite normal form (#1304) and in computing Gr... Florian Walsh

02 Aug 2019

22:43 Slug #1302 (Rejected): Factorization mod p

My fault! The factorization is actually rather fast (since it is mostly a square-free decomposition). The slow part... John Abbott

14:14 Slug #1302 (Rejected): Factorization mod p

CoCoALib took longer than expected to factorize *@x^11009 - 2@* modulo 109 (or was it 101?)
Anyway, @11009 = 101*109... John Abbott

31 Jul 2019

16:40 Feature #1301 (Feedback): New function primorial

I have implemented it: the real work is done by GMP.
Added doc; accessible from CoCoA-5. No test/example.
John Abbott

16:39 Feature #1301 (Closed): New function primorial

Add a new function *@primorial@*, the product of al primes up to a given limit.
John Abbott

11:04 Bug #1300 (Feedback): CoprimeFactorBasis: mishandles negative args

Fixed. I'll add some tests.
John Abbott

11:03 Bug #1300 (Closed): CoprimeFactorBasis: mishandles negative args

@CoprimeFactorBasis@ gives wrong answers when args are negative. Here is a simple example in CoCoA-5... John Abbott