Mathc initiation/Fichiers c : c51c1b

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x_cylrzk.h
/* --------------------------------- */
/* save as x_cylrzk.h                */
/* --------------------------------- */
double cylindrical_x_dxdzdy(

double (*P_f)(double x, double y, double z),

double (*Pux)(double y, double z),
double (*Pvx)(double y, double z),
   int nx,
   
double z,

double y
)
{
double x = 0;

   int i = 0;
double m = 0.;
double M = 0.;

 for(i = 0; i <= nx; i++)
 {
       if(i ==0 || i== nx){m = 1.;}
  else if(fmod(i,2) == 0){m = 2.;}
  else                   {m = 4.;}
  
  x = ((*Pux)(y,z)) + i*(((*Pvx)(y,z))-((*Pux)(y,z)))/nx;
  
  M += m * (*P_f)(x, y, z) * x;
 }

  return( ((((*Pvx)(y,z)) -((*Pux)(y,z)))*M) / (3*nx) );
}
/* --------------------------------- */
double cylindrical_z_dxdzdy(
double (*P_f)(double x, double y, double z),
   
double (*Pux)(double y, double z),
double (*Pvx)(double y, double z),
   int   nx,

double (*Psz)(double x),
double (*Ptz)(double x),
   int   nz,
   
double y
)
{
   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.;}

  M += m *      cylindrical_x_dxdzdy((*P_f),
                           
                             (*Pux),
                             (*Pvx),
                                nx,
                                
                           (((*Psz)(y))+i*(((*Ptz)(y))-((*Psz)(y)))/nz),
                                
                                y);
 }

 return( ((((*Ptz)(y)) -((*Psz)(y)))*M) / (3*nz) );
}
/* --------------------------------- */
double cylindrical_drdzdk(
double (*P_f)(double x, double y, double z), 
   
double (*Pux)(double y, double z),
double (*Pvx)(double y, double z),
int   nx,

double (*Psz)(double x),
double (*Ptz)(double x),
   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 *        cylindrical_z_dxdzdy((*P_f),
                               
                             (*Pux),
                             (*Pvx),
                                nx,
                             
                             (*Psz),
                             (*Ptz),
                                nz,
  
                             (ay+i*(by-ay)/ny));
 }

  return( ((by -ay)*M) / (3*ny) );
}
/* --------------------------------- */
/* --------------------------------- */


Déclaration des fichiers h.