mqarray_finder.h

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#ifndef _MQARRAY_FINDER_H_
#define _MQARRAY_FINDER_H_

/* Copyright (c) Kyriacos Leptos and the President and Fellows of Harvard University
   Release Date: 2004-11-01
   Part of the MapQuant suite library "mqbasic.lib" 
*/

extern int MQARRAY_FINDER_CMP_MODE;

enum {MQARRAY_FINDER_CMP_RIGHT_BIAS, 
      MQARRAY_FINDER_CMP_LEFT_BIAS};

struct MQArrayFinder
{
    const void* data_array;
    unsigned int size_of_element;

    int curr_left_index;
    int curr_right_index;

    void* temp1;
    void* temp2;

    
    void*(*getElement) (const void* array, unsigned int index);

    void (*addElements)(const void* sum, const void* p1, const void* p2); 
    int  (*cmpElements)(const void* p1, const void* p2); 
};

typedef struct MQArrayFinder MQArrayFinder;

void MQArrayFinder_init(MQArrayFinder* finder, const void* data, size_t size_of_element, 
                                               void*(*getElement) (const void*, unsigned int), 
                                               void (*addElements)(const void*, const void*, const void*), 
                                               int  (*cmpElements)(const void*, const void*));

void MQArrayFinder_destroy(MQArrayFinder* finder);

int  MQArrayFinder_getIndexClosestToValue(MQArrayFinder* finder, int start, int stop, const void* p);
int  MQArrayFinder_getIndicesWithinInterval(MQArrayFinder* finder, int start, int stop, int *i, int *j, const void* p, const void* q);

#endif

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