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41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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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typedef unsigned int USItype __attribute__ ((mode (SI)));
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USItype
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__mulsi3 (USItype a, USItype b)
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{
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USItype c = 0;
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while (a != 0)
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{
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if (a & 1)
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c += b;
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a >>= 1;
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b <<= 1;
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}
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return c;
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}
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