COIN-OR::LEMON - Graph Library

Changeset 832:5100072d83ca in lemon-1.2 for lemon


Ignore:
Timestamp:
02/14/10 23:10:24 (10 years ago)
Author:
Balazs Dezso <deba@…>
Branch:
default
Children:
833:d2bc45e8f6f2, 917:b4af20d02ae0
Phase:
public
Message:

Use void* like LPX object (#337)

File:
1 edited

Legend:

Unmodified
Added
Removed
  • lemon/glpk.h

    r650 r832  
    2626#include <lemon/lp_base.h>
    2727
    28 // forward declaration
    29 #if !defined _GLP_PROB && !defined GLP_PROB
    30 #define _GLP_PROB
    31 #define GLP_PROB
    32 typedef struct { double _opaque_prob; } glp_prob;
    33 /* LP/MIP problem object */
    34 #endif
    35 
    3628namespace lemon {
    3729
     30  namespace _solver_bits {
     31    class VoidPtr {
     32    private:
     33      void *_ptr;     
     34    public:
     35      VoidPtr() : _ptr(0) {}
     36
     37      template <typename T>
     38      VoidPtr(T* ptr) : _ptr(reinterpret_cast<void*>(ptr)) {}
     39
     40      template <typename T>
     41      VoidPtr& operator=(T* ptr) {
     42        _ptr = reinterpret_cast<void*>(ptr);
     43        return *this;
     44      }
     45
     46      template <typename T>
     47      operator T*() const { return reinterpret_cast<T*>(_ptr); }
     48    };
     49  }
    3850
    3951  /// \brief Base interface for the GLPK LP and MIP solver
     
    4456  protected:
    4557
    46     typedef glp_prob LPX;
    47     glp_prob* lp;
     58    _solver_bits::VoidPtr lp;
    4859
    4960    GlpkBase();
     
    123134
    124135    ///Pointer to the underlying GLPK data structure.
    125     LPX *lpx() {return lp;}
     136    _solver_bits::VoidPtr lpx() {return lp;}
    126137    ///Const pointer to the underlying GLPK data structure.
    127     const LPX *lpx() const {return lp;}
     138    _solver_bits::VoidPtr lpx() const {return lp;}
    128139
    129140    ///Returns the constraint identifier understood by GLPK.
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