/vqdr/trunk : contents of src/utils/random.vala at revision 56

: (revision 56)

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/*
 * The contects of this file is in the Public Domain.
 *
 * Created by Gustav Hartivgsson.
 */
[CCode (cname = "V", cprefix = "v_")]
namespace Utils {
  
  /**
   * At the moment this just wraps the GLib Rand things.
   * 
   * This also provides a static version of the methods.
   */
  [CCode (cname = "VRandom", cprefix = "v_random_")]
  public class Random {
    
    private static Random? _instance = null;
    
    private GLib.Rand rand;
    
    private Random () {
      this.rand = new GLib.Rand ();
    }
    
    public static Random get_instance () {
      if (_instance == null) {
       _instance = new Random ();
      }
      return _instance;
    }
    
    /* **** Instance versions *** */
    public double get_double () {
      return rand.next_double ();
    }
    
    public double get_double_range (double begin, double end) {
      return rand.double_range (begin, end);
    }
    
    public int32 get_int () {
      return (int32) rand.next_int ();
    }
    
    public int32 get_int_range (int32 begin, int32 end) {
      return rand.int_range ((int32) begin, (int32) end);
    }
    
    public void seed (int32 seed) {
      rand.set_seed ((uint32) seed);
    }
    
    
    /* **** Static versions *** */
      public static int32 get_static_int () {
      Random r = Random.get_instance ();
      return r.get_int ();
    }
    
    public static double get_static_double () {
      Random r = Random.get_instance ();
      return r.get_double ();
    }
    
    public static int32 get_static_int_range (int32 begin, int32 end) {
      Random r = Random.get_instance ();
      return r.get_int_range (begin, end);
    }
    
    public static double get_static_double_range (double begin, double end) {
      Random r = Random.get_instance ();
      return r.get_double_range (begin, end);
    }
    
  }
  
}


19 by Gustav Hartvigsson Added Round Up and Round Down function classes.	1	/*
	2	* The contects of this file is in the Public Domain.
	3	*
	4	* Created by Gustav Hartivgsson.
	5	*/
54 by Gustav Hartvigsson More work torwards inperementing the parser.	6	[CCode (cname = "V", cprefix = "v_")]
36 by Gustav Hartvigsson Refactoring.	7	namespace Utils {
1 by Gustav Hartvigsson * Initial code - far from done	8
	9	/**
	10	* At the moment this just wraps the GLib Rand things.
	11	*
	12	* This also provides a static version of the methods.
	13	*/
54 by Gustav Hartvigsson More work torwards inperementing the parser.	14	[CCode (cname = "VRandom", cprefix = "v_random_")]
1 by Gustav Hartvigsson * Initial code - far from done	15	public class Random {
	16
	17	private static Random? _instance = null;
	18
	19	private GLib.Rand rand;
	20
	21	private Random () {
	22	this.rand = new GLib.Rand ();
	23	}
	24
	25	public static Random get_instance () {
	26	if (_instance == null) {
	27	_instance = new Random ();
	28	}
	29	return _instance;
	30	}
	31
	32	/* ** Instance versions * */
	33	public double get_double () {
	34	return rand.next_double ();
	35	}
	36
	37	public double get_double_range (double begin, double end) {
	38	return rand.double_range (begin, end);
	39	}
	40
52.1.3 by Gustav Hartvigsson int -> int32	41	public int32 get_int () {
52.1.3 by Gustav Hartvigsson int -> int32	42	return (int32) rand.next_int ();
1 by Gustav Hartvigsson * Initial code - far from done	43	}
1 by Gustav Hartvigsson * Initial code - far from done	44
52.1.3 by Gustav Hartvigsson int -> int32	45	public int32 get_int_range (int32 begin, int32 end) {
1 by Gustav Hartvigsson * Initial code - far from done	46	return rand.int_range ((int32) begin, (int32) end);
	47	}
	48
52.1.3 by Gustav Hartvigsson int -> int32	49	public void seed (int32 seed) {
1 by Gustav Hartvigsson * Initial code - far from done	50	rand.set_seed ((uint32) seed);
	51	}
	52
	53
	54	/* ** Static versions * */
52.1.3 by Gustav Hartvigsson int -> int32	55	public static int32 get_static_int () {
1 by Gustav Hartvigsson * Initial code - far from done	56	Random r = Random.get_instance ();
	57	return r.get_int ();
	58	}
	59
	60	public static double get_static_double () {
	61	Random r = Random.get_instance ();
	62	return r.get_double ();
	63	}
	64
52.1.3 by Gustav Hartvigsson int -> int32	65	public static int32 get_static_int_range (int32 begin, int32 end) {
1 by Gustav Hartvigsson * Initial code - far from done	66	Random r = Random.get_instance ();
	67	return r.get_int_range (begin, end);
	68	}
	69
	70	public static double get_static_double_range (double begin, double end) {
	71	Random r = Random.get_instance ();
	72	return r.get_double_range (begin, end);
	73	}
	74
	75	}
	76
	77	}
	78