ld_fisher.c

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#include <libgen.h>
#include <math.h>
 
#include <options/options.h>
#include "../csm/csm_all.h"
 
 
struct ld_fisher_params {
        double sigma;
};
 
val ld_fisher0(LDP ld);
 
int main(int argc, const char * argv[]) {
        sm_set_program_name(argv[0]);
        
        struct ld_fisher_params p;
        
        struct option* ops = options_allocate(3);
        options_double(ops, "sigma", &p.sigma, 0.01, 
                "Std deviation of gaussian noise");
                
        if(!options_parse_args(ops, argc, argv)) {
                fprintf(stderr, "Writes Fisher's information matrix.\n\nUsage:\n");
                options_print_help(ops, stderr);
                return -1;
        }
 
        egsl_push();
 
        LDP ld;
        while( (ld = ld_from_json_stream(stdin))) {
                egsl_push();
                        val fisher = egsl_scale( square(p.sigma),  ld_fisher0(ld) );
                        
                        JO jo = matrix_to_json(egsl_gslm(fisher));
                        printf("%s\n", json_object_to_json_string(jo));
                        jo_free(jo);
                egsl_pop();
                ld_free(ld);
        }
 
        egsl_pop();
        
        return 0;
}