Re: vector of t_FRAC questions

[Karim Belabas <Karim.Belabas@math.u-bordeaux.fr>]

* hermann@stamm-wilbrandt.de [2024-07-16 00:57]:
[...]
> Simple gcd help does not mention x being t_VEC:
> 
> ? ?gcd
> gcd(x,{y}): greatest common divisor of x and y.

This is intentional: simple help recalls the most basic use (ideally
1-line help, using 80 characters at most...). It's intended as a quick
check for function syntax and prototype.

Here one sees that the y argument is optional (since it is between braces) but
cannot infer what this means from the simple help.

> Detailed doc "??gcd" mentions t_VEC only if x and y are passed.

Not sure what you mean here:

(08:44) gp > ??gcd
gcd(x,{y}):

   Creates the greatest common divisor of x and y. If you also need the u and v
such  that  x*u  + y*v = gcd(x,y),  use the gcdext function.   x and y can have
rather quite general types, for instance both rational numbers. If y is omitted
and  x  is  a  vector,   returns  the gcd of all components of x,  i.e. this is
equivalent to content(x). [...]

Cheers,

    K.B.
-- 
Pr. Karim Belabas, U. Bordeaux, Vice-président en charge du Numérique
Institut de Mathématiques de Bordeaux UMR 5251 - (+33) 05 40 00 29 77
http://www.math.u-bordeaux.fr/~kbelabas/