Test for libpuzzle

#include <stdio.h>
#include <stdlib.h>
#include "puzzle.h"
int main()
{
    PuzzleContext context;
    PuzzleCvec cvec;
    PuzzleCvec cvec2;
    double d;
    int status;
    puzzle_init_context(&context);
    puzzle_init_cvec(&context, &cvec);
    status = puzzle_fill_cvec_from_file(&context, &cvec, "lena.png");
    if (status != 0) {
        fprintf (stderr, "%s:%d: something wnet wrong.\n",
                 __FILE__, __LINE__);
        exit (1);
    }
    status = puzzle_fill_cvec_from_file(&context, &cvec2, "lena-100.png");
    if (status != 0) {
        fprintf (stderr, "%s:%d: something wnet wrong.\n",
                 __FILE__, __LINE__);
        exit (1);
    }
    d = puzzle_vector_normalized_distance(&context, &cvec, &cvec2, 1);
    if (d < PUZZLE_CVEC_SIMILARITY_THRESHOLD) {
        puts("Pictures are similar");
    }
    printf ("%g\n", d);
    puzzle_free_cvec(&context, &cvec2);
    puzzle_free_cvec(&context, &cvec);
    puzzle_free_context(&context);
    return 0;
}