Mathc initiation/Fichiers h : c59a9

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	x_l3d_dz.h

/* ---------------------------------- */
/* save as x_l3d_dz.h                 */
/* ---------------------------------- */
double lint3d_dz(
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    z0,
double    z1,
   int    nz
)
{
double t = 0;
   int i = 0;
double m = 0.;
double M = 0.;

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

  t  = (z0 + i*(z1-z0)/nz);

          /* f(g(t),h(t),k(t)) * k(t)' */

  M += m * (*P_f)((*P_g)(t),(*P_h)(t),(*P_k)(t)) *
  
               fx_x((*P_k),t,H);
 }

  return( ((z1 -z0)*M) / (3*nz));
}
/* ---------------------------------- */
/* ---------------------------------- */