libmorph-dev 1:20090926 / usr / include / xmorph / mesh-getext.h

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/usr/include/xmorph/mesh-getext.h is in libmorph-dev 1:20090926.

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#ifndef _MESH_GETEXT_H__INCLUDED_
#define _MESH_GETEXT_H__INCLUDED_

#include "mesh.h"

/************ EXTRA MESH GET FUNCTIONS  **************/



/*******************
 *  if you define   MESH_GET_EXT_NOT_SAFE
 *  then meshGetExt will not be safe for any choice of
 *  xi and yi: it will be safe only in a neighbourhood of the mesh
 *
 *  but it may be faster 
 */


#ifdef MESHGETEXT_NOT_SAFE
#define MESHGETEXT__ONLY_Y__  __meshGetExt__only_y__
static inline double /* __attribute__ weak */
__meshGetExt__only_y__(MeshT *this, int xi, int yi,double *p);
#define MESHGETEXT__GETIT__  meshGet
#else
#define MESHGETEXT__ONLY_Y__  meshGetExt
#define MESHGETEXT__GETIT__  meshGetExt
#endif


static inline double /* __attribute__ weak */
meshGetExt(MeshT *this, int xi, int yi,double *p)
{
  if(xi<0 )
    return 2*MESHGETEXT__GETIT__(this,0,yi,p)
      -MESHGETEXT__ONLY_Y__(this, -xi,yi,p);
  else if (xi>=this->nx)
    return  2*MESHGETEXT__GETIT__(this,this->nx-1 ,yi,p)
      -MESHGETEXT__ONLY_Y__(this, 2*this->nx-xi-2,yi,p);
  if(yi<0 )
    return 2*MESHGETEXT__GETIT__(this,xi,0,p)
      -MESHGETEXT__GETIT__(this, xi,-yi,p);
  else if (yi>=this->ny)
    return  2*MESHGETEXT__GETIT__(this,xi,this->ny-1,p)
      -MESHGETEXT__GETIT__(this,xi, 2*this->ny-yi-2,p);
  return meshGet__no_check(this,xi,yi,p) ;
}

#ifdef MESHGETEXT_NOT_SAFE
static inline double /* __attribute__ weak */ 
__meshGetExt__only_y__(MeshT *this, int xi, int yi,double *p)
{
  if(yi<0 )
    return 2*MESHGETEXT__GETIT__(this,xi,0,p)
      -MESHGETEXT__GETIT__(this, xi,-yi,p);
  else if (yi>=this->ny)
    return  2*MESHGETEXT__GETIT__(this,xi,this->ny-1,p)
      -MESHGETEXT__GETIT__(this,xi, 2*this->ny-yi-2,p);
  return meshGet__no_check(this,xi,yi,p) ;
}
#endif


static inline double   /* __attribute__ weak */ 
meshGetxExt2(MeshT *this, int xi, int yi)
{
  return meshGetExt(this,xi,yi, this->x);
}
static inline double   /* __attribute__ weak */ 
meshGetyExt2(MeshT *this, int xi, int yi)
{
  return meshGetExt(this,xi,yi, this->y);
}


static inline double /* __attribute__ weak */ 
meshGetxExt(MeshT *this, int xi, int yi)
{
  double *p=this->x;
  if(xi<0 )
    return 2*MESHGETEXT__ONLY_Y__(this,0,yi,p)
      -MESHGETEXT__ONLY_Y__(this, -xi,yi,p);
  else if (xi>=this->nx)
    return  2*MESHGETEXT__ONLY_Y__(this,this->nx-1 ,yi,p)
      -MESHGETEXT__ONLY_Y__(this, 2*this->nx-xi-2,yi,p);
  if(yi<0 )
    return MESHGETEXT__GETIT__(this, xi,-yi,p);
  else if (yi>=this->ny)
    return MESHGETEXT__GETIT__(this,xi, 2*this->ny-yi-2,p);
  return meshGet__no_check(this,xi,yi,p) ;
}

static inline double /* __attribute__ weak */ 
meshGetyExt(MeshT *this, int xi, int yi)
{
  double *p=this->y;
  if(xi<0 )
    return MESHGETEXT__ONLY_Y__(this, -xi,yi,p);
  else if (xi>=this->nx)
    return MESHGETEXT__ONLY_Y__(this, 2*this->nx-xi-2,yi,p);
  if(yi<0 )
    return 2*MESHGETEXT__GETIT__(this,xi,0,p)
      -MESHGETEXT__GETIT__(this, xi,-yi,p);
  else if (yi>=this->ny)
    return  2*MESHGETEXT__GETIT__(this,xi,this->ny-1,p)
      -MESHGETEXT__GETIT__(this,xi, 2*this->ny-yi-2,p);
  return meshGet__no_check(this,xi,yi,p) ;
}

#endif // _MESH_GETEXT_H__INCLUDED_

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