mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
65 lines
1.9 KiB
C
65 lines
1.9 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 Fredrik Johansson
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******************************************************************************/
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#include "arb_poly.h"
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int
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arb_poly_contains_fmpq_poly(const arb_poly_t x, const fmpq_poly_t y)
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{
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long i, exp, xlen, ylen;
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xlen = x->length;
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ylen = y->length;
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if (xlen < ylen)
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{
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return 0;
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}
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exp = *arb_poly_expref(x);
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if (COEFF_IS_MPZ(exp))
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{
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printf("arb_poly_contains_fmpq_poly: huge exponent\n");
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abort();
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}
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for (i = 0; i < ylen; i++)
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{
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if (!_arb_contains_fmpq(arb_poly_coeffs(x) + i,
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arb_poly_radref(x), exp, fmpq_poly_numref(y) + i,
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fmpq_poly_denref(y)))
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{
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return 0;
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}
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}
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/* remaining intervals must contain zero */
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for (i = ylen; i < xlen; i++)
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if (!(fmpz_cmpabs(arb_poly_radref(x), arb_poly_coeffs(x) + i) >= 0))
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return 0;
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return 1;
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}
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