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/*@@
@header DXDB_guts.h
@date Jun 98
@author Gabrielle Allen
@desc
Macro to calculate the first derivatives of the
shift with respect to x
The macro is defined in terms of standard variables in
@seefile DXDB_declare.h
@enddesc
@@*/
#ifndef DXDB_GUTS
#define DXDB_GUTS
#ifdef FCODE
DXDB_OO2DX = 1.0D0/(2.0D0*DXDB_DX)
DXDB_DXDBX = DXDB_OO2DX*(DXDB_BX_IP - DXDB_BX_IM)
DXDB_DXDBY = DXDB_OO2DX*(DXDB_BY_IP - DXDB_BY_IM)
DXDB_DXDBZ = DXDB_OO2DX*(DXDB_BZ_IP - DXDB_BZ_IM)
#endif
#ifdef CCODE
DXDB_OO2DX = 1/(2*cctkGH->cctk_delta_space[0]);
DXDB_DXDBX = DXDB_OO2DX*(DXDB_BX_IP - DXDB_BX_IM);
DXDB_DXDBY = DXDB_OO2DX*(DXDB_BY_IP - DXDB_BY_IM);
DXDB_DXDBZ = DXDB_OO2DX*(DXDB_BZ_IP - DXDB_BZ_IM);
#endif
#endif
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