Documentation of `gcry_mpi_div' function's `round' argument

[Arun Isaac]

https://gnupg.org/documentation/manuals/gcrypt/Calculations.html

The documentation for `gcry_mpi_div' says the following regarding its
argument `round':

"round should be negative or 0."

What does `round' do? Is it to indicate that the quotient should be
rounded to the nearest integer? A little bit more clarity in the
documentation would be nice.

Thanks for developing libgcrypt!