comparison: test/test_utils.cpp
test/test_utils.cpp
- changeset 633
- 63a692642aa2
- child 646
- dfd0403ff8b6
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| 632:164253538794 | 633:63a692642aa2 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2021 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/utils.h" | |
| 30 | |
| 31 #include <gtest/gtest.h> | |
| 32 | |
| 33 TEST(Utils, ForN) { | |
| 34 unsigned j; | |
| 35 j = 0; | |
| 36 cx_for_n(i, 50) { | |
| 37 EXPECT_EQ(i, j); | |
| 38 j++; | |
| 39 } | |
| 40 } | |
| 41 | |
| 42 TEST(Utils, szmul) { | |
| 43 size_t r; | |
| 44 int e; | |
| 45 e = cx_szmul(5, 7, &r); | |
| 46 EXPECT_EQ(0, e); | |
| 47 EXPECT_EQ(35, r); | |
| 48 | |
| 49 size_t s = SIZE_MAX & ~3; | |
| 50 | |
| 51 e = cx_szmul(s / 4, 2, &r); | |
| 52 EXPECT_EQ(0, e); | |
| 53 EXPECT_EQ(s / 2, r); | |
| 54 e = cx_szmul(2, s / 4, &r); | |
| 55 EXPECT_EQ(0, e); | |
| 56 EXPECT_EQ(s / 2, r); | |
| 57 | |
| 58 e = cx_szmul(s / 4, 4, &r); | |
| 59 EXPECT_EQ(0, e); | |
| 60 EXPECT_EQ(s, r); | |
| 61 | |
| 62 e = cx_szmul(4, s / 4, &r); | |
| 63 EXPECT_EQ(0, e); | |
| 64 EXPECT_EQ(s, r); | |
| 65 | |
| 66 e = cx_szmul(s / 4, 5, &r); | |
| 67 EXPECT_NE(0, e); | |
| 68 | |
| 69 e = cx_szmul(5, s / 4, &r); | |
| 70 EXPECT_NE(0, e); | |
| 71 | |
| 72 e = cx_szmul(SIZE_MAX - 4, 0, &r); | |
| 73 EXPECT_EQ(0, e); | |
| 74 EXPECT_EQ(0, r); | |
| 75 | |
| 76 e = cx_szmul(0, SIZE_MAX - 1, &r); | |
| 77 EXPECT_EQ(0, e); | |
| 78 EXPECT_EQ(0, r); | |
| 79 | |
| 80 e = cx_szmul(SIZE_MAX, 0, &r); | |
| 81 EXPECT_EQ(0, e); | |
| 82 EXPECT_EQ(0, r); | |
| 83 | |
| 84 e = cx_szmul(0, SIZE_MAX, &r); | |
| 85 EXPECT_EQ(0, e); | |
| 86 EXPECT_EQ(0, r); | |
| 87 | |
| 88 e = cx_szmul(0, 0, &r); | |
| 89 EXPECT_EQ(0, e); | |
| 90 EXPECT_EQ(0, r); | |
| 91 } | |
| 92 | |
| 93 #ifdef CX_SZMUL_BUILTIN | |
| 94 | |
| 95 // also test the custom implementation | |
| 96 struct Utils_szmul_impl : ::testing::Test { | |
| 97 #undef CX_SZMUL_BUILTIN | |
| 98 | |
| 99 #include "../src/utils.c" | |
| 100 | |
| 101 #define CX_SZMUL_BUILTIN | |
| 102 }; | |
| 103 | |
| 104 TEST_F(Utils_szmul_impl, Test) { | |
| 105 size_t r; | |
| 106 int e; | |
| 107 e = cx_szmul_impl(5, 7, &r); | |
| 108 EXPECT_EQ(0, e); | |
| 109 EXPECT_EQ(35, r); | |
| 110 | |
| 111 size_t s = SIZE_MAX & ~3; | |
| 112 | |
| 113 e = cx_szmul_impl(s / 4, 2, &r); | |
| 114 EXPECT_EQ(0, e); | |
| 115 EXPECT_EQ(s / 2, r); | |
| 116 e = cx_szmul_impl(2, s / 4, &r); | |
| 117 EXPECT_EQ(0, e); | |
| 118 EXPECT_EQ(s / 2, r); | |
| 119 | |
| 120 e = cx_szmul_impl(s / 4, 4, &r); | |
| 121 EXPECT_EQ(0, e); | |
| 122 EXPECT_EQ(s, r); | |
| 123 | |
| 124 e = cx_szmul_impl(4, s / 4, &r); | |
| 125 EXPECT_EQ(0, e); | |
| 126 EXPECT_EQ(s, r); | |
| 127 | |
| 128 e = cx_szmul_impl(s / 4, 5, &r); | |
| 129 EXPECT_NE(0, e); | |
| 130 | |
| 131 e = cx_szmul_impl(5, s / 4, &r); | |
| 132 EXPECT_NE(0, e); | |
| 133 | |
| 134 e = cx_szmul_impl(SIZE_MAX - 4, 0, &r); | |
| 135 EXPECT_EQ(0, e); | |
| 136 EXPECT_EQ(0, r); | |
| 137 | |
| 138 e = cx_szmul_impl(0, SIZE_MAX - 1, &r); | |
| 139 EXPECT_EQ(0, e); | |
| 140 EXPECT_EQ(0, r); | |
| 141 | |
| 142 e = cx_szmul_impl(SIZE_MAX, 0, &r); | |
| 143 EXPECT_EQ(0, e); | |
| 144 EXPECT_EQ(0, r); | |
| 145 | |
| 146 e = cx_szmul_impl(0, SIZE_MAX, &r); | |
| 147 EXPECT_EQ(0, e); | |
| 148 EXPECT_EQ(0, r); | |
| 149 | |
| 150 e = cx_szmul_impl(0, 0, &r); | |
| 151 EXPECT_EQ(0, e); | |
| 152 EXPECT_EQ(0, r); | |
| 153 } | |
| 154 | |
| 155 #endif // CX_SZMUL_BUILTIN |
