Re: [Fwd: Gnuplot: MAX_NUM_VAR in src/syscfg.h]

[Ethan M. <merritt@u.washington.edu>]

On Wednesday 25 May 2005 05:03 am, Lars Hecking wrote:
> 
> may I ask to advance the #define'd compile-time parameter 
>      MAX_NUM_VAR
> in src/syscfg.h from 5 to something like 20 or so?  :-)

The arrays that use MAX_NUM_VAR are horribly wasteful,
particularly if we bump it up to a larger number.
  e.g.:     char c_dummy_var[MAX_NUM_VAR][MAX_ID_LEN+1];
would be reserving 20*50 chars of storage to hold what
is usually 2-3 instances of single-characters names like
"u", "v" or "w".

How about changing these arrays to hold dynamically 
allocated pointers instead.  Then we would replace existing
assignments
	strcpy(set_dummy_var[0], "x");
with calls to a routine
	load_dummy_var(char *var, char *name)
	{
	    free(var);
	    var = gp_strdup(name);
	}
	    


-- 
Ethan A Merritt       merritt@u.washington.edu
Biomolecular Structure Center
Mailstop 357742
University of Washington, Seattle, WA 98195