Re: defining a recurrence

[Charles Greathouse <crgreathouse@gmail.com>]

See also

https://rosettacode.org/wiki/Factorial#PARI/GP

which is often a good resource for 'how do I do this in PARI'.

On Wed, Mar 22, 2023 at 5:00 AM Ruud H.G. van Tol <rvtol@isolution.nl> wrote:

On 2023-03-22 02:27, Anders Hellström wrote:
> Factorial with or without recurrence.
>
> fact1(n)=my(m);if(n==1,m=1,m=n*fact1(n-1));m \\recurrence

For "technical/implementation reasons"
it is likely better to define such as

fact1(n)= if(1==n, return(1)); n * fact1(n-1)

For example test with 10^4.

-- Ruud