any-true.c

/*
 * Copyright (c) 2003, 2007 Matteo Frigo
 * Copyright (c) 2003, 2007 Massachusetts Institute of Technology
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "ifftw-mpi.h"

/* During planning, if any process fails to create a plan then
   all of the processes must fail.  This synchronization is implemented
   by the following routine.

   Instead of 
        if (failure) goto nada;
   we instead do:
        if (any_true(failure, comm)) goto nada;
*/

int XM(any_true)(int condition, MPI_Comm comm)
{
     int result;
     MPI_Allreduce(&condition, &result, 1, MPI_INT, MPI_LOR, comm);
     return result;
}