NARVAL_G_EdgeNumber computes the number of edges l inside the graph g.
Examples
n0=100;l=1000;d=100;[g]=NARVAL_T_LocalityConnex(n0,l,d);//generation of a graphind=1;f=NARVAL_G_ShowGraph(g,ind);[l]=NARVAL_G_EdgeNumber(g);//application of NARVAL_G_EdgeNumberl