Re: [Help-glpk] glp_get_status

[Michael Hennebry]

On Tue, 18 Oct 2011, Andrew Makhorin wrote:

> > Yes when I print status I got numbers but I would like to have OPT ...
>
> switch (glp_get_status(lp))
> {  case GLP_OPT:
>      s = "OPTIMAL";
>      break;
>   case GLP_INFEAS:
>   case GLP_NOFEAS:
>      s = "INFEASIBLE";
>      break;
>   . . .
> }

number_to_name.h:
#define datum(arg) { arg, # arg }

struct number_to_name {
    int index,
    const char *name;
}  ;

const char *number_to_name(int index);

number_to_name.c:
#include "number_to_name.h"

const char *number_to_name(const struct number_to_name *table, int index)
{
for(int j=0; table[j].name; ++j) {
    if(index==table[j].index) return table[j].name;
} // j
return "?";
}

main.c:
#include "number_to_name.h"
#include "glpk.h"
...

const struct number_to_name fred = {
    datum(GLP_OPT),
    datum(INFEAS),
    datum(NOFEAS),
    0, 0
} ;

...

s=number_to_name(fred, slp_get_status(lp));

A bit more complicated if one is just doing it once,
but the problem-specific stuff is only in main.c .

--
Michael   address@hidden
"Pessimist: The glass is half empty.
Optimist:   The glass is half full.
Engineer:   The glass is twice as big as it needs to be."