1 /* Test for mulmid function.
2
3 Copyright 2011 Free Software Foundation, Inc.
4
5 This file is part of the GNU MP Library test suite.
6
7 The GNU MP Library test suite is free software; you can redistribute it
8 and/or modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 3 of the License,
10 or (at your option) any later version.
11
12 The GNU MP Library test suite is distributed in the hope that it will be
13 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
15 Public License for more details.
16
17 You should have received a copy of the GNU General Public License along with
18 the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
19
20
21 #include <stdlib.h>
22 #include <stdio.h>
23
24 #include "gmp-impl.h"
25 #include "tests.h"
26
27 /* Sizes are up to 2^SIZE_LOG limbs */
28 #ifndef SIZE_LOG
29 #define SIZE_LOG 9
30 #endif
31
32 #ifndef COUNT
33 #define COUNT 5000
34 #endif
35
36 #define MAX_N (1L << SIZE_LOG)
37
38 int
main(int argc,char ** argv)39 main (int argc, char **argv)
40 {
41 mp_ptr ap, bp, rp, refp;
42 gmp_randstate_ptr rands;
43 int test;
44 TMP_DECL;
45 TMP_MARK;
46
47 tests_start ();
48 rands = RANDS;
49
50 ap = TMP_ALLOC_LIMBS (MAX_N);
51 bp = TMP_ALLOC_LIMBS (MAX_N);
52 rp = TMP_ALLOC_LIMBS (MAX_N + 2);
53 refp = TMP_ALLOC_LIMBS (MAX_N + 2);
54
55 for (test = 0; test < COUNT; test++)
56 {
57 mp_size_t an, bn, rn;
58 unsigned size_log;
59
60 size_log = 1 + gmp_urandomm_ui (rands, SIZE_LOG);
61 an = 1 + gmp_urandomm_ui(rands, 1L << size_log);
62
63 size_log = 1 + gmp_urandomm_ui (rands, SIZE_LOG);
64 bn = 1 + gmp_urandomm_ui(rands, 1L << size_log);
65
66 /* Make sure an >= bn */
67 if (an < bn)
68 MP_SIZE_T_SWAP (an, bn);
69
70 mpn_random2 (ap, an);
71 mpn_random2 (bp, bn);
72
73 refmpn_mulmid (refp, ap, an, bp, bn);
74 mpn_mulmid (rp, ap, an, bp, bn);
75
76 rn = an + 3 - bn;
77 if (mpn_cmp (refp, rp, rn))
78 {
79 printf ("ERROR in test %d, an = %d, bn = %d, rn = %d\n",
80 test, (int) an, (int) bn, (int) rn);
81 printf("a: "); mpn_dump (ap, an);
82 printf("b: "); mpn_dump (bp, bn);
83 printf("r: "); mpn_dump (rp, rn);
84 printf("ref: "); mpn_dump (refp, rn);
85
86 abort();
87 }
88 }
89 TMP_FREE;
90 tests_end ();
91 return 0;
92 }
93