1 /* Test mpf_cmp_si and mpf_cmp_z.
2
3 Copyright 2000, 2001, 2004, 2015 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 #include <stdio.h>
21 #include <stdlib.h>
22 #include "gmp-impl.h"
23 #include "tests.h"
24
25 #define SGN(x) ((x) < 0 ? -1 : (x) == 0 ? 0 : 1)
26
27 void
28 check_data (void)
29 {
30 static const struct {
31 int a_base;
32 const char *a;
33 const char *b;
34 int want;
35 } data[] = {
36 { 10, "0", "1", -1 },
37 { 10, "0", "0", 0 },
38 { 10, "0", "-1", 1 },
39
40 { 10, "1", "1", 0 },
41 { 10, "1", "0", 1 },
42 { 10, "1", "-1", 1 },
43
44 { 10, "-1", "1", -1 },
45 { 10, "-1", "0", -1 },
46 { 10, "-1", "-1", 0 },
47
48 { 10, "1.5", "2", -1 },
49 { 10, "1.5", "1", 1 },
50 { 10, "0.5", "1", -1 },
51
52 { 10, "-1.5", "-2", 1 },
53 { 10, "-1.5", "-1", -1 },
54 { 10, "-0.5", "-1", 1 },
55
56 { 16, "0", "-0x80000000", 1 },
57 { 16, "80000000", "-0x80000000", 1 },
58 { 16, "80000001", "-0x80000000", 1 },
59 { 16, "-80000000", "-0x80000000", 0 },
60 { 16, "-80000001", "-0x80000000", -1 },
61 { 16, "-FF0080000001", "-0x80000000", -1 },
62
63 { 16, "0", "-0x8000000000000000", 1 },
64 { 16, "8000000000000000", "-0x8000000000000000", 1 },
65 { 16, "8000000000000001", "-0x8000000000000000", 1 },
66 { 16, "-8000000000000000", "-0x8000000000000000", 0 },
67 { 16, "-8000000000000000.1", "-0x8000000000000000", -1 },
68 { 16, "-FF008000000000000001", "-0x8000000000000000", -1 },
69
70 { 16, "0", "-0x876543210FEDCBA9876543210000000", 1 },
71 { 16, "876543210FEDCBA9876543210000000", "-0x876543210FEDCBA9876543210000000", 1 },
72 { 16, "876543210FEDCBA9876543210000001", "-0x876543210FEDCBA9876543210000000", 1 },
73 { 16, "-876543210FEDCBA9876543210000000", "-0x876543210FEDCBA9876543210000000", 0 },
74 { 16, "-876543210FEDCBA9876543210000000.1", "-0x876543210FEDCBA9876543210000000", -1 },
75 { 16, "-FF00876543210FEDCBA9876543210000000", "-0x876543210FEDCBA9876543210000000", -1 },
76 };
77
78 mpf_t a;
79 mpz_t bz;
80 long b;
81 int got;
82 int i;
83
84 mpf_init2 (a, 128);
85 mpz_init (bz);
86 for (i = 0; i < numberof (data); i++)
87 {
88 mpf_set_str_or_abort (a, data[i].a, data[i].a_base);
89 mpz_set_str_or_abort (bz, data[i].b, 0);
90
91 if (mpz_fits_slong_p (bz))
92 {
93 b = mpz_get_si (bz);
94 got = mpf_cmp_si (a, b);
95 if (SGN (got) != data[i].want)
96 {
97 printf ("mpf_cmp_si wrong on data[%d]\n", i);
98 printf (" a="); mpf_out_str (stdout, 10, 0, a);
99 printf (" (%s)\n", data[i].a);
100 printf (" b=%ld (%s)\n", b, data[i].b);
101 printf (" got=%d\n", got);
102 printf (" want=%d\n", data[i].want);
103 abort();
104 }
105 }
106
107 got = mpf_cmp_z (a, bz);
108 if (SGN (got) != data[i].want)
109 {
110 b = mpz_get_si (bz);
111 printf ("mpf_cmp_z wrong on data[%d]\n", i);
112 printf (" a="); mpf_out_str (stdout, 10, 0, a);
113 printf (" (%s)\n", data[i].a);
114 printf (" b=%ld (%s)\n", b, data[i].b);
115 printf (" got=%d\n", got);
116 printf (" want=%d\n", data[i].want);
117 abort();
118 }
119 }
120
121 mpf_clear (a);
122 mpz_clear (bz);
123 }
124
125 int
126 main (void)
127 {
128 tests_start ();
129
130 check_data ();
131
132 tests_end ();
133 exit (0);
134 }