1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2022 Mike Becker, Olaf Wintermann All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "cx/compare.h"
30
31 #include <gtest/gtest.h>
32
33 template<typename T>
34 static void test_compare(
35 int (*fnc)(
36 void const *,
37 void const *
38 )
39 ) {
40 auto m = std::numeric_limits<T>::max() / 400;
41 T x, y;
42
43 x = (std::is_signed_v<T> ? -3 : 3) * m;
44 y = 5 * m;
45 EXPECT_LT(fnc(&x, &y), 0);
46 EXPECT_GT(fnc(&y, &x), 0);
47
48 x = 120 * m;
49 y = 348 * m;
50 EXPECT_LT(fnc(&x, &y), 0);
51 EXPECT_GT(fnc(&y, &x), 0);
52
53 if constexpr (std::is_signed_v<T>) {
54 x = -120 * m;
55 y = -348 * m;
56 EXPECT_GT(fnc(&x, &y), 0);
57 EXPECT_LT(fnc(&y, &x), 0);
58 }
59
60 x = y;
61 EXPECT_EQ(fnc(&x, &y), 0);
62 EXPECT_EQ(fnc(&y, &x), 0);
63 }
64
65 TEST(Compare, Int) {
66 test_compare<int>(cx_cmp_int);
67 }
68
69 TEST(Compare, Longint) {
70 test_compare<long int>(cx_cmp_longint);
71 }
72
73 TEST(Compare, Longlong) {
74 test_compare<long long>(cx_cmp_longlong);
75 }
76
77 TEST(Compare, Int16) {
78 test_compare<int16_t>(cx_cmp_int16);
79 }
80
81 TEST(Compare, Int32) {
82 test_compare<int32_t>(cx_cmp_int32);
83 }
84
85 TEST(Compare, Int64) {
86 test_compare<int64_t>(cx_cmp_int64);
87 }
88
89 TEST(Compare, Uint) {
90 test_compare<unsigned int>(cx_cmp_uint);
91 }
92
93 TEST(Compare, Ulongint) {
94 test_compare<unsigned long int>(cx_cmp_ulongint);
95 }
96
97 TEST(Compare, Ulonglong) {
98 test_compare<unsigned long long>(cx_cmp_ulonglong);
99 }
100
101 TEST(Compare, Uint16) {
102 test_compare<uint16_t>(cx_cmp_uint16);
103 }
104
105 TEST(Compare, Uint32) {
106 test_compare<uint32_t>(cx_cmp_uint32);
107 }
108
109 TEST(Compare, Uint64) {
110 test_compare<uint64_t>(cx_cmp_uint64);
111 }
112
113 TEST(Compare, Float) {
114 test_compare<float>(cx_cmp_float);
115 }
116
117 TEST(Compare, Double) {
118 test_compare<double>(cx_cmp_double);
119 }
120
121 TEST(Compare, IntPtr) {
122 test_compare<intptr_t>(cx_cmp_intptr);
123 }
124
125 TEST(Compare, UintPtr) {
126 test_compare<uintptr_t>(cx_cmp_uintptr);
127 }
128