46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/*=============================================================================
|
|
|
|
This file is part of FLINT.
|
|
|
|
FLINT 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.
|
|
|
|
FLINT 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 FLINT; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2013 Mike Hansen
|
|
|
|
******************************************************************************/
|
|
|
|
#include "fq_nmod.h"
|
|
|
|
void
|
|
fq_nmod_pth_root(fq_nmod_t rop, const fq_nmod_t op1, const fq_nmod_ctx_t ctx)
|
|
{
|
|
slong i, d;
|
|
if (fq_nmod_is_zero(op1, ctx) || fq_nmod_is_one(op1, ctx))
|
|
{
|
|
fq_nmod_set(rop, op1, ctx);
|
|
return;
|
|
}
|
|
|
|
/* TODO: Use modular composition */
|
|
d = fq_nmod_ctx_degree(ctx) - 1;
|
|
fq_nmod_set(rop, op1, ctx);
|
|
for (i = 0; i < d; i++)
|
|
{
|
|
fq_nmod_pow(rop, rop, fq_nmod_ctx_prime(ctx), ctx);
|
|
}
|
|
}
|