56 lines
1.8 KiB
C
56 lines
1.8 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) 2007, David Howden.
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Copyright (C) 2010 William Hart
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******************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <gmp.h>
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#include "flint.h"
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#include "nmod_poly.h"
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void _nmod_poly_make_monic(mp_ptr output,
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mp_srcptr input, slong len, nmod_t mod)
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{
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mp_limb_t inv;
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inv = n_invmod(input[len - 1], mod.n);
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_nmod_vec_scalar_mul_nmod(output, input, len, inv, mod);
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}
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void nmod_poly_make_monic(nmod_poly_t output, const nmod_poly_t input)
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{
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if (input->length == 0)
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{
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flint_printf("Exception (nmod_poly_make_monic). Division by zero.\n");
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abort();
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}
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nmod_poly_fit_length(output, input->length);
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_nmod_poly_make_monic(output->coeffs,
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input->coeffs, input->length, input->mod);
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output->length = input->length;
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}
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