Mercurial > public > cpp-enigma
annotate enigma/enigma_utils.h @ 13:b9d124a15926
To improve cache performance, the enigma machine rotors are now stored
together with the reflector in a vector.
| author | Brian Neal <bgneal@gmail.com> |
|---|---|
| date | Mon, 02 Jul 2012 19:14:36 -0500 |
| parents | 424111a36ed7 |
| children |
| rev | line source |
|---|---|
| bgneal@1 | 1 #ifndef CPP_ENIGMA_ENIGMA_UTILS_H |
| bgneal@1 | 2 #define CPP_ENIGMA_ENIGMA_UTILS_H |
| bgneal@1 | 3 // Copyright (C) 2012 by Brian Neal. |
| bgneal@1 | 4 // This file is part of Cpp-Enigma, the Enigma Machine simulation. |
| bgneal@1 | 5 // Cpp-Enigma is released under the MIT License (see License.txt). |
| bgneal@1 | 6 // |
| bgneal@1 | 7 // enigma_utils.h - This file contains common functions used throughout Cpp-Enigma. |
| bgneal@1 | 8 |
| bgneal@4 | 9 #include <string> |
| bgneal@4 | 10 |
| bgneal@1 | 11 namespace enigma |
| bgneal@1 | 12 { |
| bgneal@1 | 13 // This version of mod acts like Python's with respect to negative dividends. |
| bgneal@1 | 14 inline int alpha_mod(int dividend) |
| bgneal@1 | 15 { |
| bgneal@1 | 16 if (dividend < 0) |
| bgneal@1 | 17 { |
| bgneal@1 | 18 dividend += 26; |
| bgneal@1 | 19 } |
| bgneal@1 | 20 return dividend % 26; |
| bgneal@1 | 21 } |
| bgneal@4 | 22 |
| bgneal@4 | 23 // Removes spaces from a string and returns the resulting string: |
| bgneal@4 | 24 std::string remove_spaces(const std::string& s); |
| bgneal@12 | 25 |
| bgneal@12 | 26 // Removes spaces & converts to signal numbers: |
| bgneal@12 | 27 std::string preprocess_ciphertext(const std::string& s); |
| bgneal@1 | 28 } |
| bgneal@1 | 29 |
| bgneal@1 | 30 #endif |