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/*@@
@header cctk_Faces.h
@date 11 Feb 2003
@author David Rideout
@desc
Macros for generic specification of sets of 'faces' of an
'n-cube'
@enddesc
@version $Header$
@@*/
#ifndef _CCTK_FACES_H_
#define _CCTK_FACES_H_ 1
/* The set of all faces (this is enough for up to 7 dimension) */
#define CCTK_ALL_FACES 16383 /* 2^14-1 */
/* Here will be placed macros which provide a user friendly interface
* to a general specification for expressing sets of faces of an
* n-dimensional rectangle. Each face will be assigned one bit in a
* word. Then one can bitwise-or a number of these together to
* specify a set of faces. The macros will make this user-friendly
* somehow (and accessible to Fortran).
*
* Example:
*
* #define FACE0 1>>0
* #define FACE1 1>>1
* etc.
*
* where FACE0 may be the negative x-face, FACE1 the positive x-face, etc. */
#endif /* _CCTK_FACES_H_ */
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