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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgcc/] [config/] [epiphany/] [mulsi3.c] - Blame information for rev 734

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1 734 jeremybenn
/* Generic 32 bit multiply.
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   Copyright (C) 2009 Free Software Foundation, Inc.
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   Contributed by Embecosm on behalf of Adapteva, Inc.
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This file is part of GCC.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
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<http://www.gnu.org/licenses/>.  */
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unsigned int
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__mulsi3 (unsigned int a, unsigned int b)
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{
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  unsigned int r = 0;
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  while (a)
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    {
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      if (a & 1)
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        r += b;
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      a >>= 1;
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      b <<= 1;
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    }
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  return r;
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}

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