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#include "Bdef.h"
#if (INTFACE == C_CALL)
void Cblacs_get(Int ConTxt, Int what, Int *val)
#else
F_VOID_FUNC blacs_get_(Int *ConTxt, Int *what, Int *val)
#endif
{
Int Csys2blacs_handle(MPI_Comm);
Int ierr, *iptr;
MpiInt flag;
Int comm;
BLACSCONTEXT *ctxt;
switch( Mpval(what) )
{
case SGET_SYSCONTXT:
if (BI_COMM_WORLD == NULL) Cblacs_pinfo(val, &ierr);
#if (INTFACE == C_CALL)
*val = Csys2blacs_handle(MPI_COMM_WORLD);
#else
*val = *BI_COMM_WORLD;
#endif
break;
case SGET_MSGIDS:
if (BI_COMM_WORLD == NULL) Cblacs_pinfo(val, &val[1]);
iptr = &val[1];
ierr=MPI_Comm_get_attr(MPI_COMM_WORLD, MPI_TAG_UB, (BVOID **) &iptr,&flag);
val[0] = 0;
val[1] = *iptr;
break;
case SGET_DEBUGLVL:
*val = BlacsDebugLvl;
break;
case SGET_BLACSCONTXT:
MGetConTxt(Mpval(ConTxt), ctxt);
#if (INTFACE == C_CALL)
*val = Csys2blacs_handle(ctxt->pscp.comm);
#else /* if user called the fortran interface to the BLACS */
*val = MPI_Comm_c2f(ctxt->pscp.comm);
#endif
break;
case SGET_NR_BS:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->Nr_bs;
break;
case SGET_NB_BS:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->Nb_bs - 1;
break;
case SGET_NR_CO:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->Nr_co;
break;
case SGET_NB_CO:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->Nb_co - 1;
break;
case SGET_TOPSREPEAT:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->TopsRepeat;
break;
case SGET_TOPSCOHRNT:
MGetConTxt(Mpval(ConTxt), ctxt);
*val = ctxt->TopsCohrnt;
break;
default:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__, "Unknown WHAT (%d)",
Mpval(what));
}
}
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