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#include "Bdef.h"
#if (INTFACE == C_CALL)
void Cblacs_set(Int ConTxt, Int what, Int *val)
#else
F_VOID_FUNC blacs_set_(Int *ConTxt, Int *what, Int *val)
#endif
{
BLACSCONTEXT *ctxt;
switch( Mpval(what) )
{
case SGET_SYSCONTXT:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"Cannot set BLACS system context, can only BLACS_GET");
break;
case SGET_MSGIDS:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"No need to set message ID range due to MPI communicator.");
break;
case SGET_DEBUGLVL:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"Cannot set BLACS debug level; must recompile to change");
break;
case SGET_BLACSCONTXT:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"Cannot set BLACS context, can only BLACS_GET");
break;
case SGET_NR_BS:
MGetConTxt(Mpval(ConTxt), ctxt);
if (*val) ctxt->Nr_bs = *val;
else BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"BSBR nrings cannot be set to zero");
break;
case SGET_NB_BS:
MGetConTxt(Mpval(ConTxt), ctxt);
if (*val > 0) ctxt->Nb_bs = *val + 1;
else BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"Illegal BSBR nbranches (%d); must be strictly positive",
*val);
break;
case SGET_NR_CO:
MGetConTxt(Mpval(ConTxt), ctxt);
if (*val) ctxt->Nr_co = *val;
else BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"COMB nrings cannot be set to zero");
break;
case SGET_NB_CO:
MGetConTxt(Mpval(ConTxt), ctxt);
if (*val > 0) ctxt->Nb_co = *val + 1;
else BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__,
"Illegal COMB nbranches (%d); must be strictly positive",
*val);
break;
case SGET_TOPSREPEAT:
MGetConTxt(Mpval(ConTxt), ctxt);
ctxt->TopsRepeat = *val;
break;
case SGET_TOPSCOHRNT:
MGetConTxt(Mpval(ConTxt), ctxt);
ctxt->TopsCohrnt = *val;
break;
default:
BI_BlacsWarn(Mpval(ConTxt), __LINE__, __FILE__, "Unknown WHAT (%d)",
Mpval(what));
}
}
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