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primeNumberGenerator.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file primeNumberGenerator.h
10 * @author drose
11 * @date 2001-03-22
12 */
13
14#ifndef PRIMENUMBERGENERATOR_H
15#define PRIMENUMBERGENERATOR_H
16
17#include "dcbase.h"
18
19#ifdef WITHIN_PANDA
20// We only have the vector_int header file if we're compiling this package
21// within the normal Panda environment.
22#include "vector_int.h"
23
24#else
25typedef std::vector<int> vector_int;
26#endif
27
28/**
29 * This class generates a table of prime numbers, up to the limit of an int.
30 * For a given integer n, it will return the nth prime number. This will
31 * involve a recompute step only if n is greater than any previous n.
32 */
33class EXPCL_DIRECT_DCPARSER PrimeNumberGenerator {
34public:
36
37 int operator [] (int n);
38
39private:
40 typedef vector_int Primes;
41 Primes _primes;
42};
43
44#endif
This class generates a table of prime numbers, up to the limit of an int.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.