t-sub.c revision 1.1.1.1 
1/* Test sub_ddmmss.
2
3Copyright 2004 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library.
6
7The GNU MP Library is free software; you can redistribute it and/or modify
8it under the terms of the GNU Lesser General Public License as published by
9the Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12The GNU MP Library is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
15License for more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
19
20#include <stdio.h>
21#include <stdlib.h>
22
23#include "gmp.h"
24#include "gmp-impl.h"
25#include "longlong.h"
26#include "tests.h"
27
28
29void
30check_data (void)
31{
32#define M  MP_LIMB_T_MAX
33
34  static const struct {
35    mp_limb_t  want_dh,want_dl, mh,ml, sh,sl;
36  } data[] = {
37    { 0,0,  0,0,  0,0 },
38    { 0,0,  0,1,  0,1 },
39    { 0,0,  1,2,  1,2 },
40
41    { 0,1,  0,2,  0,1 },
42    { 0,M,  1,0,  0,1 },
43    { M,M,  0,0,  0,1 },
44
45    { M,M,  0,M-1,  0,M },
46    { 0,0,  0,M-1,  0,M-1 },
47    { 0,1,  0,M-1,  0,M-2 },
48  };
49  int  i;
50  mp_limb_t  got_dh, got_dl;
51
52  for (i = 0; i < numberof (data); i++)
53    {
54      sub_ddmmss (got_dh,got_dl, data[i].mh,data[i].ml, data[i].sh,data[i].sl);
55      if (got_dh != data[i].want_dh || got_dl != data[i].want_dl)
56        {
57          printf ("check_data wrong at data[%d]\n", i);
58          mp_limb_trace ("  mh", data[i].mh);
59          mp_limb_trace ("  ml", data[i].ml);
60          mp_limb_trace ("  sh", data[i].sh);
61          mp_limb_trace ("  sl", data[i].sl);
62          mp_limb_trace ("  want dh", data[i].want_dh);
63          mp_limb_trace ("  want dl", data[i].want_dl);
64          mp_limb_trace ("  got dh ", got_dh);
65          mp_limb_trace ("  got dl ", got_dl);
66          abort ();
67        }
68    }
69}
70
71void
72check_random (void)
73{
74  mp_limb_t  want_dh,want_dl, got_dh,got_dl, mh,ml, sh,sl;
75  int  i;
76
77  for (i = 0; i < 20; i++)
78    {
79      mh = urandom ();
80      ml = urandom ();
81      sh = urandom ();
82      sl = urandom ();
83
84      refmpn_sub_ddmmss (&want_dh,&want_dl, mh,ml, sh,sl);
85
86      sub_ddmmss (got_dh,got_dl, mh,ml, sh,sl);
87
88      if (got_dh != want_dh || got_dl != want_dl)
89        {
90          printf ("check_data wrong at data[%d]\n", i);
91          mp_limb_trace ("  mh", mh);
92          mp_limb_trace ("  ml", ml);
93          mp_limb_trace ("  sh", sh);
94          mp_limb_trace ("  sl", sl);
95          mp_limb_trace ("  want dh", want_dh);
96          mp_limb_trace ("  want dl", want_dl);
97          mp_limb_trace ("  got dh ", got_dh);
98          mp_limb_trace ("  got dl ", got_dl);
99          abort ();
100        }
101    }
102}
103
104int
105main (void)
106{
107  tests_start ();
108  mp_trace_base = -16;
109
110  check_data ();
111  check_random ();
112
113  tests_end ();
114  exit (0);
115}
116