d_binning.c
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	#include<stdio.h>
	#include<math.h>
	#include<fonction.h>
	#include<constant.h>
	#include<dimension.h>
	#include<structure.h>
	#include "lt.h"

	void d_binning(double *im, int nx, int *ny, int bin)
	{
	const extern struct g_mode M;
	register int i, j, ii, jj;
	int nxb, nyb;
	double s, bb;

	bb = bin * bin;

	NPRINTF(stderr, "Bin image by a factor %d\n", bin);

	nxb = (int) ((double) * nx) / ((double)bin);
	nyb = (int) ((double) * ny) / ((double)bin);

	for (i = 0; i < *ny; i += bin)
	for (j = 0; j < *nx; j += bin)
	{
	s = 0.;
	for (ii = 0; ii < bin; ii++) // y
	for (jj = 0; jj < bin; jj++) //x
	s += im[i+ii][j+jj];

	im[i/bin][j/bin] = s / bb;
	}

	*nx = nxb;
	*ny = nyb;
	}