1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
// 980930 bkoz work with libstdc++v3
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
// 2006, 2007, 2009
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 21.3.6.8 basic_string::compare
// int compare(const basic_string& str) const;
// int compare(size_type pos1, size_type n1, const basic_string& str) const;
// int compare(size_type pos1, size_type n1, const basic_string& str,
// size_type pos2, size_type n2) const;
// int compare(const charT* s) const;
// int compare(size_type pos1, size_type n1,
// const charT* s, size_type n2 = npos) const;
// NB compare should be thought of as a lexographical compare, ie how
// things would be sorted in a dictionary.
#include <string>
#include <cstring>
#include <testsuite_hooks.h>
enum want_value {lt=0, z=1, gt=2};
int
test_value(int result, want_value expected);
int
test_value(int result, want_value expected)
{
bool test __attribute__((unused)) = true;
bool pass = false;
switch (expected) {
case lt:
if (result < 0)
pass = true;
break;
case z:
if (!result)
pass = true;
break;
case gt:
if (result > 0)
pass = true;
break;
default:
pass = false; //should not get here
}
VERIFY(pass);
return 0;
}
int
test01()
{
using namespace std;
string str_0("costa rica");
string str_1("costa marbella");
string str_2;
//sanity check
test_value(strcmp("costa marbella", "costa rica"), lt);
test_value(strcmp("costa rica", "costa rica"), z);
test_value(strcmp(str_1.data(), str_0.data()), lt);
test_value(strcmp(str_0.data(), str_1.data()), gt);
test_value(strncmp(str_1.data(), str_0.data(), 6), z);
test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
test_value(memcmp(str_1.data(), str_0.data(), 6), z);
test_value(memcmp(str_1.data(), str_0.data(), 14), lt);
test_value(memcmp("costa marbella", "costa rica", 14), lt);
// int compare(const basic_string& str) const;
test_value(str_0.compare(str_1), gt); //because r>m
test_value(str_1.compare(str_0), lt); //because m<r
str_2 = str_0;
test_value(str_2.compare(str_0), z);
str_2 = "cost";
test_value(str_2.compare(str_0), lt);
str_2 = "costa ricans";
test_value(str_2.compare(str_0), gt);
// int compare(size_type pos1, size_type n1, const basic_string& str) const;
test_value(str_1.compare(0, 6, str_0), lt);
str_2 = "cost";
test_value(str_1.compare(0, 4, str_2), z);
test_value(str_1.compare(0, 5, str_2), gt);
// int compare(size_type pos1, size_type n1, const basic_string& str,
// size_type pos2, size_type n2) const;
test_value(str_1.compare(0, 6, str_0, 0, 6), z);
test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
// int compare(const charT* s) const;
test_value(str_0.compare("costa marbella"), gt);
test_value(str_1.compare("costa rica"), lt);
str_2 = str_0;
test_value(str_2.compare("costa rica"), z);
test_value(str_2.compare("cost"), gt);
test_value(str_2.compare("costa ricans"), lt);
// int compare(size_type pos, size_type n1, const charT* str,
// size_type n2 = npos) const;
test_value(str_1.compare(0, 6, "costa rica", 0, 6), z);
test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt);
test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt);
return 0;
}
int
main()
{
test01();
return 0;
}
|
