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45 #ifndef _atoi_pearson_h
46 #define _atoi_pearson_h 1
48 #include "utility/funcs.h"
49 #include "utility/pm_random.h"
50 #include "utility/key.h"
52 // Based on Pearson's algorithm presented in CACM 90/6.
53 // rewritten to speed up atoi()
60 atoi_pearson(int _range, int _entries) ;
61 atoi_pearson(int _range, int _entries, pm_random&) ;
62 atoi_pearson(int _range, int _entries, char* v_tbl) ;
63 virtual ~atoi_pearson() ;
65 virtual int atoi(const key_type& k, int offset = 0) const ;
66 int atoi(const char* str, int _offset = 0, int range = 0) const ;
67 int atoi(const char* str, int sz, int _offset = 0, int range = 0) const ;
69 int size() { return v_entries; } ;
70 char* tblPtr() { return v_tbl; } ;
72 friend ostream& operator<<(ostream&, atoi_pearson&);
75 void init(int _range, int _entries, pm_random&);
82 unsigned int v_entries;
84 unsigned int v_no_bytes;