utils.h

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#ifndef UTILS_H
#define UTILS_H

#include <cxcore.h> // opencv 

#include <stdio.h>
#include <dirent.h>


/* absolute value */
#ifndef ABS
#define ABS(x) ( ( x < 0 )? -x : x )
#endif

/***************************** Inline Functions ******************************/


static inline int pixval8( IplImage* img, int r, int c )
{
  return (int)( ( (uchar*)(img->imageData + img->widthStep*r) )[c] );
}


static inline void setpix8( IplImage* img, int r, int c, uchar val)
{
  ( (uchar*)(img->imageData + img->widthStep*r) )[c] = val;
}


static inline float pixval32f( IplImage* img, int r, int c )
{
  return ( (float*)(img->imageData + img->widthStep*r) )[c];
}


static inline void setpix32f( IplImage* img, int r, int c, float val )
{
  ( (float*)(img->imageData + img->widthStep*r) )[c] = val;
}


static inline double pixval64f( IplImage* img, int r, int c )
{
  return (double)( ( (double*)(img->imageData + img->widthStep*r) )[c] );
}


static inline void setpix64f( IplImage* img, int r, int c, double val )
{
  ( (double*)(img->imageData + img->widthStep*r) )[c] = val;
}


/**************************** Function Prototypes ****************************/


extern void fatal_error( char* format, ... );


extern int array_double( void** array, int n, int size );


// extern double dist_sq_2D( CvPoint2D64f p1, CvPoint2D64f p2 );

#endif