fast accurate Kneser sexp algorithm

[sheldonison]

Sheldon, I'm wondering if I'm doing something wrong here, but whenever I try to plot anything with this function:

Code:

V(a,b,t) = {
  if (real(t)<1,  return(exp2(t,exp2(-t,a)+exp2(-t,b))));
  if (real(t)>=1, return(exp2(t,exp2(-t,a)+exp2(-1,b))));
}

exp2(t, a) = {
  if (a==2, return(2));
  if (a == 4, return(4));
  if (real(a)>2, return(superf(isuperf(a)+t)), return(superf2(isuperf2(a)+t)));
}

I repeatedly get a cryptic Win32 error:

Code:

gp 4852 child_copy: linked dll data write copy failed

This is my proposed "natural" extension to the Ackermann function, I'm confused as to why it won't plot.

I appreciate any help you can give me, thanks.

I'll take a look. I need to know what base you're initializing for. The Ackermann function means you're probably initializing using base 2? hmmm, looking at your code, you're probably using base sqrt(2), which has two different superfunction solutions and fixed points of 2 and 4. I'll post some more after I do some experiments for base sqrt(2), along with your routine.
- Shel
For the most recent code version: go to the Nov 21st, 2011 thread.