73 lines
2.3 KiB
C
73 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) 2011, 2012 Sebastian Pancratz
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******************************************************************************/
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#include "padic_poly.h"
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void _padic_poly_scalar_mul_padic(fmpz *rop, slong *rval, slong N,
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const fmpz *op, slong val, slong len,
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const padic_t c, const padic_ctx_t ctx)
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{
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if (padic_is_zero(c) || val + padic_val(c) >= N)
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{
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_fmpz_vec_zero(rop, len);
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*rval = 0;
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}
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else
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{
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fmpz_t pow;
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int alloc;
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*rval = val + padic_val(c);
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alloc = _padic_ctx_pow_ui(pow, N - *rval, ctx);
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_fmpz_vec_scalar_mul_fmpz(rop, op, len, padic_unit(c));
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_fmpz_vec_scalar_mod_fmpz(rop, rop, len, pow);
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if (alloc)
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fmpz_clear(pow);
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}
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}
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void padic_poly_scalar_mul_padic(padic_poly_t rop, const padic_poly_t op,
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const padic_t c, const padic_ctx_t ctx)
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{
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if (padic_poly_is_zero(op) || padic_is_zero(c) ||
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op->val + padic_val(c) >= rop->N)
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{
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padic_poly_zero(rop);
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}
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else
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{
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padic_poly_fit_length(rop, op->length);
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_padic_poly_set_length(rop, op->length);
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_padic_poly_scalar_mul_padic(rop->coeffs, &(rop->val), rop->N,
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op->coeffs, op->val, op->length, c, ctx);
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}
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}
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