legion/src/generic/roundup.c

/*
* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T2 Processor File: roundup.c
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
*
* The above named program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* The above named 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 work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ========== Copyright Header End ============================================
*/
#include <sys/types.h>

#include "basics.h"

uint64_t sim_roundup(uint64_t value, uint64_t round)
{
        if (round==0) return 0;

                /* if not a power of two rounding use the slow integer math method */
        if (round & (round-1)) {
                uint64_t temp;

                temp = value + round;
                temp -= temp % round;
                value = temp;
        } else {
                value = (value + round -1) & ~(round -1);
        }

        return value;
}