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
/*
Copyright (C) 2009 William Hart
Copyright (C) 2009 Andy Novocin
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 "test_helpers.h"
#include <math.h>
#include "ulong_extras.h"
#include "fmpz.h"
TEST_FUNCTION_START(fmpz_set_d_2exp, state)
{
int i, result;
double d, d2;
slong exp, exp2;
for (i = 0; i < 1000 * flint_test_multiplier(); i++)
{
fmpz_t a;
fmpz_init(a);
fmpz_randtest(a, state, 200);
d = fmpz_get_d_2exp(&exp, a);
fmpz_set_d_2exp(a, d, exp);
d2 = fmpz_get_d_2exp(&exp2, a);
result = (d2 == d && exp == exp2) && _fmpz_is_canonical(a);
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a = "), fmpz_print(a), flint_printf("\n");
flint_printf("d = %f, d2 = %f\n", d, d2);
flint_printf("exp = %wd, exp2 = %wd, bits = %wu\n", exp, exp2, fmpz_bits(a));
fflush(stdout);
flint_abort();
}
fmpz_clear(a);
}
TEST_FUNCTION_END(state);
}