core/RInt.hh

   1 /******************************************************************************
   2  * Copyright (c) 2000-2016 Ericsson Telecom AB
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *   Balasko, Jeno
  10  *   Kovacs, Ferenc
  11  *   Raduly, Csaba
  12  *
  13  ******************************************************************************/
  14 #ifndef RInt_HH
  15 #define RInt_HH
  16
  17 struct bignum_st;
  18 typedef bignum_st BIGNUM;
  19
  20 typedef int RInt;
  21
  22 class int_val_t
  23 {
  24 private:
  25   friend class INTEGER;
  26   friend class INTEGER_template;
  27
  28   bool native_flag;
  29   union {
  30     RInt native;
  31     BIGNUM *openssl;
  32   } val;
  33
  34 public:
  35   int_val_t();
  36   int_val_t(const int_val_t& v);
  37   explicit int_val_t(const char *s);
  38   explicit int_val_t(RInt v) : native_flag(true) { val.native = v; }
  39   explicit int_val_t(BIGNUM *v) : native_flag(false) { val.openssl = v; }
  40   ~int_val_t();
  41   /** Returns a newly allocated string. Caller must call Free() */
  42   char *as_string() const;
  43   const RInt& get_val() const;
  44   BIGNUM *get_val_openssl() const;
  45   double to_real() const;
  46   int_val_t operator&(RInt right) const;
  47   bool operator==(const int_val_t& right) const;
  48   bool operator<(const int_val_t& right) const;
  49
  50   inline bool operator!=(const int_val_t& right) const { return !(*this == right); }
  51   inline bool operator>(const int_val_t& right) const { return *this != right && !(*this < right); }
  52   inline bool operator>=(const int_val_t& right) const { return *this == right || *this > right; }
  53   inline bool operator<=(const int_val_t& right) const { return *this == right || *this < right; }
  54   inline bool operator==(RInt right) const { return *this == int_val_t(right); }
  55   inline bool operator!=(RInt right) const { return !(*this == right); }
  56   inline bool operator>(RInt right) const { return *this != right && !(*this < right); }
  57   inline bool operator<(RInt right) const { return *this != right && *this < int_val_t(right); }
  58   inline bool operator<=(RInt right) const { return *this == right || *this < right; }
  59   inline bool operator>=(RInt right) const { return *this == right || *this > right; }
  60
  61   int_val_t& operator=(const int_val_t& right);
  62   int_val_t& operator=(RInt right);
  63   int_val_t& operator+=(RInt right);
  64   int_val_t& operator<<=(RInt right);
  65   int_val_t& operator>>=(RInt right);
  66   inline bool is_native() const { return native_flag; }
  67   bool is_negative() const;
  68 };
  69
  70 BIGNUM *to_openssl(RInt other_value);
  71 RInt string2RInt(const char *s);
  72
  73 #endif  // RInt_HH