53 lines
1.5 KiB
C
53 lines
1.5 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) 2010 Fredrik Johansson
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******************************************************************************/
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#include "fmpz_mat.h"
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slong
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fmpz_mat_max_bits(const fmpz_mat_t mat)
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{
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slong i;
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slong bits, row_bits, sign;
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sign = 1;
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bits = 0;
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if (mat->r == 0 || mat->c == 0)
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return 0;
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for (i = 0; i < mat->r; i++)
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{
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row_bits = _fmpz_vec_max_bits(mat->rows[i], mat->c);
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if (row_bits < 0)
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{
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row_bits = -row_bits;
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sign = -1;
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}
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bits = FLINT_MAX(bits, row_bits);
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}
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return bits * sign;
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}
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