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38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA */
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/* Do udiv and urem if machine dosn't have it */
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#include <global.h>
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#include <math.h>
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unsigned long udiv(long unsigned int a, long unsigned int b)
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{
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if (a < INT_MAX32 && b < INT_MAX32)
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return (unsigned long) ((long) a / (long) b);
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if (!(b & 1))
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return (unsigned long) ((long) (a >> 1) / (long) (b >> 1));
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return (unsigned long) floor(((double) a / (double) b));
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}
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unsigned long urem(long unsigned int a, long unsigned int b)
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{
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if (a < INT_MAX32 && b < INT_MAX32)
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return (unsigned long) ((long) a % (long) b);
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return a-udiv(a,b)*b;
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}
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