mirror of
https://github.com/vale981/arb
synced 2025-03-07 02:11:38 -05:00
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/*=============================================================================
|
|
|
|
This file is part of ARB.
|
|
|
|
ARB is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ARB is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with ARB; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2016 Pascal Molin
|
|
|
|
******************************************************************************/
|
|
|
|
#include "dlog.h"
|
|
|
|
/* assume b = 1 mod p, not checked */
|
|
ulong
|
|
dlog_1modpe(const dlog_1modpe_t t, ulong b)
|
|
{
|
|
padic_t px;
|
|
fmpz_t ix;
|
|
ulong ux;
|
|
padic_init(px);
|
|
fmpz_init(ix);
|
|
|
|
padic_set_ui(px, b, t->ctx);
|
|
padic_log(px, px, t->ctx);
|
|
padic_mul(px, px, t->invlog, t->ctx);
|
|
padic_get_fmpz(ix, px, t->ctx);
|
|
ux = fmpz_get_ui(ix);
|
|
|
|
padic_clear(px);
|
|
fmpz_clear(ix);
|
|
return ux;
|
|
}
|