61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
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/*
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* Copyright (c) 2003 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CVS_IDENT
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#ident "$Id: math.c,v 1.1 2003/04/23 15:01:29 steve Exp $"
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#endif
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# include <string.h>
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# include <stdlib.h>
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# include <assert.h>
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# include "vpi_user.h"
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# include "veriuser.h"
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void tf_multiply_long(PLI_INT32*aof_low1, PLI_INT32*aof_high1,
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PLI_INT32 aof_low2, PLI_INT32 aof_high2)
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{
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if (sizeof(long) == 8) {
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long a, b;
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a = (*aof_high1 << 32) | (*aof_low1);
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b = (aof_high2 << 32) | (aof_low2);
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a *= b;
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*aof_low1 = a & 0xffffffff;
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a >>= 32;
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*aof_high1 = a & 0xffffffff;
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} else if (sizeof(long long) == 8) {
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long long a, b;
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a = (*aof_high1 << 32) | (*aof_low1);
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b = ( aof_high2 << 32) | ( aof_low2);
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a *= b;
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*aof_low1 = a & 0xffffffff;
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a >>= 32;
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*aof_high1 = a & 0xffffffff;
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} else {
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assert(0);
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}
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}
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/*
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* $Log: math.c,v $
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* Revision 1.1 2003/04/23 15:01:29 steve
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* Add tf_synchronize and tf_multiply_long.
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*
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*/
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