util.h

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/*
 * util.h
 *
 * Copyright (C) 2013-2016 Fabian Gieseke <fabian.gieseke@di.ku.dk>
 * License: GPL v2
 *
 */

#ifndef NEIGHBORS_KDTREE_INCLUDE_UTIL_H_
#define NEIGHBORS_KDTREE_INCLUDE_UTIL_H_

#include "global.h"

#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <string.h>

void set_default_parameters(KD_TREE_PARAMETERS *params);

void check_parameters(KD_TREE_PARAMETERS *params);

void partition_array_via_pivot(void *array, 
        int count, 
        int axis,
        int size_per_elt, 
        FLOAT_TYPE pivot_value);
        
void swap_elements(void *p1, 
        void *p2, 
        int size_elt);

void copy_element(void *dest,
        const void *src,
        int size_elt);

FLOAT_TYPE squared(FLOAT_TYPE a);

FLOAT_TYPE kd_tree_dist(const FLOAT_TYPE *a, 
        const FLOAT_TYPE *b, 
        int dim);

#endif /* NEIGHBORS_KDTREE_INCLUDE_UTIL_H_ */