#include <stdio.h>
#include <stdlib.h>
#include <cairo.h>
#define CAIRO_H

int main(int argc, char** argv)
{
	cairo_surface_t *surface = NULL;
    cairo_t         *cr      = NULL;
    
    double tolerance_val          = atof(argv[1]);
    double returned_tolerance_val = 0;
    
	surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 400, 400);    
    
    if( (!surface) || (cairo_surface_status(surface) != CAIRO_STATUS_SUCCESS) )
    {
        printf("Cannot create a correct image surface.\n");
        return 0;
    }
    
    cr = cairo_create(surface);
    
    if( (!cr) || (cairo_status(cr) != CAIRO_STATUS_SUCCESS) )
    {
        printf("Cannot create a correct cairo_t object.\n");
        return 0;
    }
    
 	cairo_set_tolerance(cr, tolerance_val);
    returned_tolerance_val = cairo_get_tolerance(cr); 
       
    printf("After cairo_set_tolerance(%f) is called, "
          "cairo_get_tolerance() should return %f.\n",
          tolerance_val,
          returned_tolerance_val);
    
    if( cr )
    {
        cairo_destroy (cr);
    }
    
    if( surface )
    {
        cairo_surface_destroy (surface);
    }    
    
  return 0;  
}