Mathc initiation/Fichiers h : c60aa
Apparence
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x_surfzx.h |
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/* ---------------------------------- */
/* save as x_surfzy.h */
/* ---------------------------------- */
double Sint_dzy(
double (*P_g)(double x, double y, double z),
double (*P_k)(double y, double z),
double (*P_u)(double z),
double (*P_v)(double z),
int nz,
double y
)
{
pt2d p;
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.;}
p.y = ((*P_u)(y)) + i*(((*P_v)(y))-((*P_u)(y)))/nz;
p.x = y;
M += m * ( (*P_g)((*P_k)(p.x,p.y),p.x,p.y) *
sqrt( pow(fxy_x((*P_k),H,p),2) +
pow(fxy_y((*P_k),H,p),2) +
1));
}
return( ((((*P_v)(y)) -((*P_u)(y)))*M) / (3*nz) );
}
/* ---------------------------------- */
double surface_dzdy(
double (*P_g)(double x, double y, double z),
double (*P_k)(double y, double z),
double (*P_u)(double y),
double (*P_v)(double y),
int nz,
double ay,
double by,
int ny
)
{
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.;}
M += m * Sint_dzy( (*P_g),(*P_k),
(*P_u),(*P_v),nz,
(ay + i*(by-ay)/ny));
}
return( ((by -ay)*M) / (3*ny) );
}
/* ---------------------------------- */
/* ---------------------------------- */
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