Document fmpz_mod_poly_scalar_mul_ui ?

[fingolfin]

I noticed that there exists a function fmpz_mod_poly_scalar_mul_ui (and also _fmpz_mod_poly_scalar_mul_ui) which seems to be an undocumented sibling to fmpz_mod_poly_scalar_mul_fmpz.

Is there a reason this is undocumented? Is it safe to use it / would it be useful to document it?

[albinahlback]

Looking at the code, it should be very safe to use!

I would guess that it was quickly implemented since it internally promotes to fmpz. Should be documented, though.