documentation bug?

[Zimmermann Paul]

       Hi,

in Section 15.3.5 Jacobi Symbol of the GMP 5.1.0 documentation, one reads:

   `mpz_jacobi' and `mpz_kronecker' are currently implemented with a
   simple binary algorithm similar to that described for the GCDs (*note
   Binary GCD::).  They're not very fast when both inputs are large.
   Lehmer's multi-step improvement or a binary based multi-step algorithm
   is likely to be better.

However according to http://gmplib.org/gmp5.1.html there is now a
subquadratic algorithm for the Kronecker/Jacobi/Legendre symbol.
Thus it seems the documentation is obsolete.

By the way, which subquadratic algorithm is implemented?

Best regards,
Paul Zimmermann