Mathc initiation/004z

Sommaire

Installer ce fichier dans votre répertoire de travail.

	x_prods.h

/* ---------------------------------- */
/* save as x_prods.h                  */
/* ---------------------------------- */
/*                    
        u = (-f_xi, -f_yj, 1k)                      
*/
/* ---------------------------------- */
v3d prod_scal_g_x_g_y(
double (*P_f)(double x, double y),      /* g(x,y,z) = f(x,y) + z(x,y) */
pt2d     p
)
{
v3d  u;

     u.i =  - fxy_x((*P_f),H,p);
     u.j =  - fxy_y((*P_f),H,p);
     u.k =                    1;

     return(u);
}
/* --------------------------------- */
/* --------------------------------- */