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
51
52
53
54
55
56
57
58
/*
Copyright (C) 2011 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 "fmpz.h"
#include "fmpz_mat.h"
#include "fmpq.h"
#include "fmpq_mat.h"
void
fmpq_mat_set_fmpz_mat_div_fmpz(fmpq_mat_t X, const fmpz_mat_t Xnum,
const fmpz_t den)
{
slong i, j;
if (fmpz_is_one(den))
{
fmpq_mat_set_fmpz_mat(X, Xnum);
}
else if (*den == WORD(-1))
{
fmpz_t t;
fmpz_init(t);
fmpz_set(t, den);
for (i = 0; i < Xnum->r; i++)
{
for (j = 0; j < Xnum->c; j++)
{
fmpz_neg(fmpq_mat_entry_num(X, i, j),
fmpz_mat_entry(Xnum, i, j));
fmpz_one(fmpq_mat_entry_den(X, i, j));
}
}
fmpz_clear(t);
}
else
{
for (i = 0; i < Xnum->r; i++)
{
for (j = 0; j < Xnum->c; j++)
{
fmpz_set(fmpq_mat_entry_num(X, i, j),
fmpz_mat_entry(Xnum, i, j));
fmpz_set(fmpq_mat_entry_den(X, i, j), den);
fmpq_canonicalise(fmpq_mat_entry(X, i, j));
}
}
}
}