Re: incorrect type in gpow(0,n) (t_VEC)

[Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>]

On Thu, Feb 12, 2015 at 04:33:06PM +1100, Kevin Acres wrote:
> Hi,
> 
> I've noticed recently that something like [1,2,3]^[2] works fine,
> whereas if any element is zero I get an error:
> 
> ? [0,2,3]^[2]
>   ***   at top-level: [0,2,3]^[2]
>   ***                        ^----
>   *** _^_: incorrect type in gpow(0,n) (t_VEC).
>   ***   Break loop: type 'break' to go back to GP prompt
> 
> Is there a work around for this?
> 
> As background I need to perform sqrt(vecsum(x^[2])) so maybe there
> is a better way of obtaining the same result.
> 
> I'm using version 2.7.2 under 64 bit linux.

Karim has fixed this bug, see
http://pari.math.u-bordeaux.fr/Bugs/1713
However, we advise against using this construct and use apply instead.

Cheers,
Bill.