83 lines
2.3 KiB
C
83 lines
2.3 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) 2012 Lina Kulakova
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Copyright (C) 2013 Martin Lee
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Copyright (C) 2013 Mike Hansen
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******************************************************************************/
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#ifdef T
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#include "templates.h"
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#include "math.h"
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int
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TEMPLATE(T, poly_is_irreducible_ddf) (const TEMPLATE(T, poly_t) f,
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const TEMPLATE(T, ctx_t) ctx)
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{
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slong i, n;
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slong *degs;
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TEMPLATE(T, poly_factor_t) dist_deg;
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n = TEMPLATE(T, poly_degree) (f, ctx);
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if (n < 2)
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return 1;
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if (!TEMPLATE(T, poly_is_squarefree) (f, ctx))
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return 0;
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if (!(degs = (slong *) flint_malloc(n * sizeof(slong))))
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{
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TEMPLATE_PRINTF("Exception (%s_poly_is_irreducible_ddf): \n", T);
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flint_printf("Not enough memory.\n");
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abort();
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}
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TEMPLATE(T, poly_factor_init) (dist_deg, ctx);
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TEMPLATE(T, poly_factor_distinct_deg) (dist_deg, f, °s, ctx);
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for (i = 0; i < dist_deg->num; i++)
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{
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if (degs[i] == n)
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{
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flint_free(degs);
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TEMPLATE(T, poly_factor_clear) (dist_deg, ctx);
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return 1;
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}
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if (degs[i] > 0)
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{
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flint_free(degs);
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TEMPLATE(T, poly_factor_clear) (dist_deg, ctx);
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return 0;
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}
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}
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flint_free(degs);
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TEMPLATE(T, poly_factor_clear) (dist_deg, ctx);
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return 1;
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}
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#endif
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