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
/*
Copyright (C) 2020 Fredrik Johansson
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 "ca.h"
void
ca_factor_get_ca(ca_t res, const ca_factor_t fac, ca_ctx_t ctx)
{
slong i, len;
ca_t t;
len = fac->length;
if (len == 0)
{
ca_one(res, ctx);
}
else if (len == 1)
{
ca_pow(res, fac->base, fac->exp, ctx);
}
else
{
ca_init(t, ctx);
ca_pow(res, fac->base, fac->exp, ctx);
for (i = 1; i < len; i++)
{
ca_pow(t, fac->base + i, fac->exp + i, ctx);
ca_mul(res, res, t, ctx);
}
ca_clear(t, ctx);
}
}