/*
 * utils.h
 *
 * Utility stuff
 *
 * (c) 2007 Thomas White <taw27@cam.ac.uk>
 *	    Gordon Ball <gfb21@cam.ac.uk>
 *
 *  dtr - Diffraction Tomography Reconstruction
 *
 */
 
#ifndef UTILS_H
#define UTILS_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gsl/gsl_matrix.h>

extern unsigned int biggest(signed int a, signed int b);
extern unsigned int smallest(signed int a, signed int b);
extern double distance(double x1, double y1, double x2, double y2);
extern double modulus(double x, double y, double z);
extern double angle_between(double x1, double y1, double z1, double x2, double y2, double z2);
extern double lambda(double voltage);
extern void matrix_renormalise(gsl_matrix *m);

#endif	/* UTILS_H */