Mathc initiation/Fichiers h : c59a8

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	x_l3d_dy.h

/* ---------------------------------- */
/* save as x_l3d_dy.h                 */
/* ---------------------------------- */ 
double lint3d_dy(
double (*P_f)(double x, double y, double z),

double (*P_g)(double t),
double (*P_h)(double t),
double (*P_k)(double t),

double    y0,
double    y1,
   int    ny
)
{
double t = 0;
   int i = 0;
double m = 0.;
double M = 0.;

 for(i = 0; i <= ny; i++)
 {
       if(i ==0 || i== ny){m = 1.;}
  else if(fmod(i,2) == 0){m = 2.;}
  else                   {m = 4.;}

  t  = (y0 + i*(y1-y0)/ny);

          /* f(g(t),h(t),k(t)) * h(t)' */
  
  M += m * (*P_f)((*P_g)(t),(*P_h)(t),(*P_k)(t)) *
    
               fx_x((*P_h),t,H) ;
 }

  return( ((y1 -y0)*M) / (3*ny) );
}
/* ---------------------------------- */
/* ---------------------------------- */