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/*
Copyright (C) 2011, 2012 Sebastian Pancratz
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "ulong_extras.h"
#include "padic.h"
void padic_set_ui(padic_t rop, ulong op, const padic_ctx_t ctx)
{
if (op == 0)
{
padic_zero(rop);
}
else if (fmpz_cmp_ui(ctx->p, op) > 0)
{
fmpz_set_ui(padic_unit(rop), op);
padic_val(rop) = 0;
}
else
{
ulong p = fmpz_get_ui(ctx->p), q, r;
/* Remove factors of p */
padic_val(rop) = 0;
r = n_divrem2_precomp(&q, op, p, ctx->pinv);
while (r == 0)
{
op = q;
padic_val(rop)++;
r = n_divrem2_precomp(&q, op, p, ctx->pinv);
}
fmpz_set_ui(padic_unit(rop), op);
_padic_reduce(rop, ctx);
}
}