utils/zenutils/libraries/beecrypt-4.1.2/beecrypt/mpnumber.h

   1 /*
   2  * Copyright (c) 2003 Bob Deblier
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20 /*!\file mpnumber.h
  21  * \brief Multi-precision numbers, headers.
  22  * \author Bob Deblier <bob.deblier@pandora.be>
  23  * \ingroup MP_m
  24  */
  25
  26 #ifndef _MPNUMBER_H
  27 #define _MPNUMBER_H
  28
  29 #include "beecrypt/mp.h"
  30
  31 #ifdef __cplusplus
  32 # include <iostream>
  33 #endif
  34
  35 #ifdef __cplusplus
  36 struct BEECRYPTAPI mpnumber
  37 #else
  38 struct _mpnumber
  39 #endif
  40 {
  41         size_t  size;
  42         mpw*    data;
  43
  44 #ifdef __cplusplus
  45         static const mpnumber ZERO;
  46         static const mpnumber ONE;
  47
  48         mpnumber();
  49         mpnumber(unsigned int);
  50         mpnumber(const mpnumber&);
  51         ~mpnumber();
  52
  53         const mpnumber& operator=(const mpnumber&);
  54         bool operator==(const mpnumber&) const throw ();
  55         bool operator!=(const mpnumber&) const throw ();
  56
  57         void wipe();
  58
  59         size_t bitlength() const throw ();
  60 #endif
  61 };
  62
  63 #ifndef __cplusplus
  64 typedef struct _mpnumber mpnumber;
  65 #else
  66 BEECRYPTAPI
  67 std::ostream& operator<<(std::ostream&, const mpnumber&);
  68 /*
  69 BEECRYPTAPI
  70 std::istream& operator>>(std::istream&, mpnumber&);
  71 */
  72 #endif
  73
  74 #ifdef __cplusplus
  75 extern "C" {
  76 #endif
  77
  78 BEECRYPTAPI
  79 void mpnzero(mpnumber*);
  80 BEECRYPTAPI
  81 void mpnsize(mpnumber*, size_t);
  82 BEECRYPTAPI
  83 void mpninit(mpnumber*, size_t, const mpw*);
  84 BEECRYPTAPI
  85 void mpnfree(mpnumber*);
  86 BEECRYPTAPI
  87 void mpncopy(mpnumber*, const mpnumber*);
  88 BEECRYPTAPI
  89 void mpnwipe(mpnumber*);
  90
  91 BEECRYPTAPI
  92 void mpnset   (mpnumber*, size_t, const mpw*);
  93 BEECRYPTAPI
  94 void mpnsetw  (mpnumber*, mpw);
  95
  96 BEECRYPTAPI
  97 int mpnsetbin(mpnumber*, const byte*, size_t);
  98 BEECRYPTAPI
  99 int mpnsethex(mpnumber*, const char*);
 100
 101 BEECRYPTAPI
 102 int  mpninv(mpnumber*, const mpnumber*, const mpnumber*);
 103
 104 /*!\brief Truncate the mpnumber to the specified number of (least significant) bits.
 105  */
 106 BEECRYPTAPI
 107 size_t mpntrbits(mpnumber*, size_t);
 108 BEECRYPTAPI
 109 size_t mpnbits(const mpnumber*);
 110
 111 #ifdef __cplusplus
 112 }
 113 #endif
 114
 115 #endif