1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
/*
Copyright (C) 2011 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 "fmpz.h"
#include "fmpz_mat.h"
#include "padic_mat.h"
void _padic_mat_reduce(padic_mat_t mat, const padic_ctx_t ctx)
{
if (!padic_mat_is_empty(mat) && !padic_mat_is_zero(mat))
{
if (mat->val >= padic_mat_prec(mat))
{
padic_mat_zero(mat);
}
else
{
slong i;
fmpz_t pow;
fmpz_init(pow);
fmpz_pow_ui(pow, ctx->p, padic_mat_prec(mat) - mat->val);
for (i = 0; i < padic_mat(mat)->r * padic_mat(mat)->c; i++)
{
fmpz_mod(padic_mat(mat)->entries + i,
padic_mat(mat)->entries + i, pow);
}
fmpz_clear(pow);
if (padic_mat_is_zero(mat))
{
mat->val = 0;
}
}
}
}
void padic_mat_reduce(padic_mat_t mat, const padic_ctx_t ctx)
{
_padic_mat_canonicalise(mat, ctx);
_padic_mat_reduce(mat, ctx);
}