58 lines
1.7 KiB
C
58 lines
1.7 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 Fredrik Johansson
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******************************************************************************/
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#include <stdlib.h>
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#include "flint.h"
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#include "fmpz_poly.h"
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#include "fmpz_poly_mat.h"
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slong
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fmpz_poly_mat_max_bits(const fmpz_poly_mat_t A)
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{
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slong i, j, bits, max;
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int sign;
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max = 0;
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sign = 0;
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for (i = 0; i < A->r; i++)
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{
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for (j = 0; j < A->c; j++)
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{
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bits = fmpz_poly_max_bits(fmpz_poly_mat_entry(A, i, j));
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if (bits < 0)
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{
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sign = 1;
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max = FLINT_MAX(max, -bits);
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}
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else
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max = FLINT_MAX(max, bits);
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}
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}
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return sign ? -max : max;
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}
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