ic_product.c
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	#include<stdio.h>
	#include<math.h>
	#include<fonction.h>
	#include<constant.h>
	#include<dimension.h>
	#include<structure.h>

	void ic_product( double r_im, double i_im, double r_im2, double i_im2,
	double r_prod, double i_prod,
	int nbr_lin, int nbr_col)
	{
	register int i, j;
	double prodr, prodi;

	for (i = 0; i < nbr_lin; i++)
	for (j = 0; j < nbr_col; j++)
	{
	prodr = r_im[i][j] * r_im2[i][j] - i_im[i][j] * i_im2[i][j];
	prodi = r_im[i][j] * i_im2[i][j] + i_im[i][j] * r_im2[i][j];
	r_prod[i][j] = prodr;
	i_prod[i][j] = prodi;
	}
	}