59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
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/*=============================================================================
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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.h"
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void padic_set_ui(padic_t rop, ulong op, const padic_ctx_t ctx)
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{
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if (op == 0)
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{
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padic_zero(rop);
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}
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else if (fmpz_cmp_ui(ctx->p, op) > 0)
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{
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fmpz_set_ui(padic_unit(rop), op);
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padic_val(rop) = 0;
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}
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else
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{
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ulong p = fmpz_get_ui(ctx->p), q, r;
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/* Remove factors of p */
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padic_val(rop) = 0;
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r = n_divrem2_precomp(&q, op, p, ctx->pinv);
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while (r == 0)
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{
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op = q;
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padic_val(rop)++;
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r = n_divrem2_precomp(&q, op, p, ctx->pinv);
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}
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fmpz_set_ui(padic_unit(rop), op);
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_padic_reduce(rop, ctx);
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}
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}
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