sort.h

多核环境下运行了可满足性分析的工具软件

/******************************************************************************************[Sort.h]
MiniSat -- Copyright (c) 2003-2006, Niklas Een, Niklas Sorensson

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#ifndef Sort_h
#define Sort_h

#include "Vec.h"

//=================================================================================================
// Some sorting algorithms for vec's


namespace minisat {
  
  template<class T>
    struct LessThan_default {
      bool operator () (T x, T y) { return x < y; }
    };

  
  template <class T, class LessThan>
    void selectionSort(T* array, int size, LessThan lt)
    {
      int     i, j, best_i;
      T       tmp;
      
      for (i = 0; i < size-1; i++){
        best_i = i;
        for (j = i+1; j < size; j++){
	  if (lt(array[j], array[best_i]))
	    best_i = j;
        }
        tmp = array[i]; array[i] = array[best_i]; array[best_i] = tmp;
      }
    }
  template <class T> static inline void selectionSort(T* array, int size) {
    selectionSort(array, size, LessThan_default<T>()); }
  
  template <class T, class LessThan>
    void sort(T* array, int size, LessThan lt)
    {
      if (size <= 15)
        selectionSort(array, size, lt);
      
      else{
        T           pivot = array[size / 2];
        T           tmp;
        int         i = -1;
        int         j = size;

        for(;;){
	  do i++; while(lt(array[i], pivot));
	  do j--; while(lt(pivot, array[j]));
	  
	  if (i >= j) break;
	  
	  tmp = array[i]; array[i] = array[j]; array[j] = tmp;
        }
	
        sort(array    , i     , lt);
        sort(&array[i], size-i, lt);
      }
    }

  template <class T> static inline void sort(T* array, int size) {
    sort(array, size, LessThan_default<T>()); }
  
  
  //=================================================================================================
  // For 'vec's:
  
  
  template <class T, class LessThan> void sort(vec<T>& v, LessThan lt) {
    sort((T*)v, v.size(), lt); }
  template <class T> void sort(vec<T>& v) {
    sort(v, LessThan_default<T>()); }
  
  
  //=================================================================================================
  
} // end namespace minisat

#endif