1/* Test mpz_cmp_si.
2
3Copyright 2000, 2001 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#include "gmp.h"
23#include "gmp-impl.h"
24#include "tests.h"
25
26#define SGN(x)       ((x) < 0 ? -1 : (x) == 0 ? 0 : 1)
27
28void
29check_data (void)
30{
31  static const struct {
32    const char  *a, *b;
33    int         want;
34  } data[] = {
35    { "0",  "1", -1 },
36    { "0",  "0",  0 },
37    { "0", "-1",  1 },
38
39    { "1",  "1", 0 },
40    { "1",  "0", 1 },
41    { "1", "-1", 1 },
42
43    { "-1",  "1", -1 },
44    { "-1",  "0", -1 },
45    { "-1", "-1", 0 },
46
47    {           "0", "-0x80000000",  1 },
48    {  "0x80000000", "-0x80000000",  1 },
49    {  "0x80000001", "-0x80000000",  1 },
50    { "-0x80000000", "-0x80000000",  0 },
51    { "-0x80000001", "-0x80000000", -1 },
52
53    {                   "0", "-0x8000000000000000",  1 },
54    {  "0x8000000000000000", "-0x8000000000000000",  1 },
55    {  "0x8000000000000001", "-0x8000000000000000",  1 },
56    { "-0x8000000000000000", "-0x8000000000000000",  0 },
57    { "-0x8000000000000001", "-0x8000000000000000", -1 },
58  };
59
60  mpz_t  a, bz;
61  long   b;
62  int    got;
63  int    i;
64
65  mpz_init (a);
66  mpz_init (bz);
67  for (i = 0; i < numberof (data); i++)
68    {
69      mpz_set_str_or_abort (a, data[i].a, 0);
70      mpz_set_str_or_abort (bz, data[i].b, 0);
71
72      if (mpz_fits_slong_p (bz))
73	{
74	  b = mpz_get_si (bz);
75	  got = mpz_cmp_si (a, b);
76	  if (SGN (got) != data[i].want)
77	    {
78	      printf ("mpz_cmp_si wrong on data[%d]\n", i);
79	      printf ("  a="); mpz_out_str (stdout, 10, a); printf ("\n");
80	      printf ("  b=%ld\n", b);
81	      printf ("  got=%d\n", got);
82	      printf ("  want=%d\n", data[i].want);
83	      abort();
84	    }
85	}
86    }
87
88  mpz_clear (a);
89  mpz_clear (bz);
90}
91
92
93int
94main (void)
95{
96  tests_start ();
97
98  check_data ();
99
100  tests_end ();
101  exit (0);
102}
103