ca2d_cfg.c

////////////////////////////////////////////////////////////////////////////////
//
// This is free and unencumbered software released into the public domain.
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////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
// CA configuration handling
////////////////////////////////////////////////////////////////////////////////

#include <stdio.h>

#include "ca2d.h"

// read CA state from file
int ca2d_read (char *filename, ca2d_size_t siz, int unsigned ca [siz.y] [siz.x]) {
    FILE *fp;
    fp = fopen (filename, "r");
    if (!fp) {
        fprintf (stderr, "ERROR: file %s not found\n", filename);
        return (1);
    }
    for (int unsigned y=0; y<siz.y; y++) {
        for (int unsigned x=0; x<siz.x; x++) {
             fscanf (fp, "%u", &ca [y] [x]);
        }
    }
    fclose (fp);
    return (0);
}

// print CA state
int ca2d_print (ca2d_size_t siz, int unsigned ca [siz.y] [siz.x]) {
    printf ("CA configuration siz [y↓,x→] = [%u,%u]:\n", siz.y, siz.x);
    for (int unsigned y=0; y<siz.y; y++) {
        for (int unsigned x=0; x<siz.x; x++) {
            printf (" %u", ca [y] [x]);
        }
        printf ("\n");
    }
    return (0);
}

// compare CA states
int ca2d_lattice_compare (ca2d_size_t siz, int unsigned ca0 [siz.y] [siz.x], int unsigned ca1 [siz.y] [siz.x]) {
    for (int unsigned y=0; y<siz.y; y++) {
        for (int unsigned x=0; x<siz.x; x++) {
            if (ca0 [y] [x] != ca1 [y] [x]) {
                return (1);
            }
        }
    }
    return (0);
}