64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT 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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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2011 Sebastian Pancratz
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******************************************************************************/
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#include <stdlib.h>
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#include <limits.h>
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#include "flint.h"
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size_t z_sizeinbase(slong n, int b)
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{
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slong c = 0;
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if (n == 0)
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{
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return 1;
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}
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if (n <= 0)
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{
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if (n > WORD_MIN)
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{
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n = -n;
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}
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else /* n == WORD_MIN */
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{
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if (n % b)
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{
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n = - (n + 1);
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}
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else
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{
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n = - (n / b);
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c = 1;
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}
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}
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}
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for ( ; n > 0; n /= b, c++) ;
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return c;
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}
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