1 /* tdiv -- test file for mpc_div.
2
3 Copyright (C) 2002, 2008, 2009, 2011, 2013, 2020 INRIA
4
5 This file is part of GNU MPC.
6
7 GNU MPC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU Lesser General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15 more details.
16
17 You should have received a copy of the GNU Lesser General Public License
18 along with this program. If not, see http://www.gnu.org/licenses/ .
19 */
20
21 #include <stdlib.h>
22 #include "mpc-tests.h"
23
24 #define MPC_FUNCTION_CALL \
25 P[0].mpc_inex = mpc_div (P[1].mpc, P[2].mpc, P[3].mpc, P[4].mpc_rnd)
26 #define MPC_FUNCTION_CALL_REUSE_OP1 \
27 P[0].mpc_inex = mpc_div (P[1].mpc, P[1].mpc, P[3].mpc, P[4].mpc_rnd)
28 #define MPC_FUNCTION_CALL_REUSE_OP2 \
29 P[0].mpc_inex = mpc_div (P[1].mpc, P[2].mpc, P[1].mpc, P[4].mpc_rnd)
30
31 #include "data_check.tpl"
32 #include "tgeneric.tpl"
33
34 static void
bug20200206(void)35 bug20200206 (void)
36 {
37 mpfr_exp_t emin = mpfr_get_emin ();
38 mpfr_exp_t emax = mpfr_get_emax ();
39 mpc_t x, y, z, zr;
40
41 mpfr_set_emin (-1073);
42 mpfr_set_emax (0);
43 mpc_init2 (x, 53);
44 mpc_init2 (y, 53);
45 mpc_init2 (z, 53);
46 mpc_init2 (zr, 53);
47 mpfr_set_d (mpc_realref (x), -5.3310997889069899e-216, MPFR_RNDN);
48 mpfr_set_d (mpc_imagref (x), -4.9188093228194944e-89, MPFR_RNDN);
49 mpfr_set_d (mpc_realref (y), -3.6801500191882962e-14, MPFR_RNDN);
50 mpfr_set_d (mpc_imagref (y), 4.5420247980297260e-145, MPFR_RNDN);
51 mpc_div (z, x, y, MPC_RNDNN);
52 /* quotient is 1.44844440684571e-202 + 1.33657848108714e-75*I,
53 where both the real and imaginary parts fit in the exponent range */
54 mpfr_set_d (mpc_realref (zr), 0x2.d69b18295a8cep-672, MPFR_RNDN);
55 mpfr_set_d (mpc_imagref (zr), 0x9.ac3e51d39eea8p-252, MPFR_RNDN);
56 if (mpc_cmp (z, zr))
57 {
58 printf ("Incorrect division with reduced exponent range:\n");
59 mpfr_printf ("Expected (%Re,%Re)\n", mpc_realref (zr), mpc_imagref (zr));
60 mpfr_printf ("Got (%Re,%Re)\n", mpc_realref (z), mpc_imagref (z));
61 exit (1);
62 }
63 mpc_clear (x);
64 mpc_clear (y);
65 mpc_clear (z);
66 mpc_clear (zr);
67 mpfr_set_emin (emin);
68 mpfr_set_emax (emax);
69 }
70
71 int
main(void)72 main (void)
73 {
74 test_start ();
75
76 bug20200206 ();
77 data_check_template ("div.dsc", "div.dat");
78
79 tgeneric_template ("div.dsc", 2, 1024, 7, 4096);
80
81 test_end ();
82
83 return 0;
84 }
85