comparison: tests/test_szmul.c
tests/test_szmul.c
- changeset 970
- c9b02747cfc5
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| 969:72e5432f6b42 | 970:c9b02747cfc5 |
|---|---|
| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2023 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/test.h" | |
| 30 | |
| 31 CX_TEST(test_szmul) { | |
| 32 size_t r; | |
| 33 int e; | |
| 34 | |
| 35 CX_TEST_DO { | |
| 36 e = cx_szmul(5, 7, &r); | |
| 37 CX_TEST_ASSERT(e == 0); | |
| 38 CX_TEST_ASSERT(r == 35); | |
| 39 | |
| 40 size_t s = SIZE_MAX & ~3; | |
| 41 | |
| 42 e = cx_szmul(s / 4, 2, &r); | |
| 43 CX_TEST_ASSERT(e == 0); | |
| 44 CX_TEST_ASSERT(r == s / 2); | |
| 45 | |
| 46 e = cx_szmul(2, s / 4, &r); | |
| 47 CX_TEST_ASSERT(e == 0); | |
| 48 CX_TEST_ASSERT(r == s / 2); | |
| 49 | |
| 50 e = cx_szmul(s / 4, 4, &r); | |
| 51 CX_TEST_ASSERT(e == 0); | |
| 52 CX_TEST_ASSERT(r == s); | |
| 53 | |
| 54 e = cx_szmul(4, s / 4, &r); | |
| 55 CX_TEST_ASSERT(e == 0); | |
| 56 CX_TEST_ASSERT(r == s); | |
| 57 | |
| 58 e = cx_szmul(s / 4, 5, &r); | |
| 59 CX_TEST_ASSERT(e != 0); | |
| 60 | |
| 61 e = cx_szmul(5, s / 4, &r); | |
| 62 CX_TEST_ASSERT(e != 0); | |
| 63 | |
| 64 e = cx_szmul(SIZE_MAX - 4, 0, &r); | |
| 65 CX_TEST_ASSERT(e == 0); | |
| 66 CX_TEST_ASSERT(r == 0); | |
| 67 | |
| 68 e = cx_szmul(0, SIZE_MAX - 1, &r); | |
| 69 CX_TEST_ASSERT(e == 0); | |
| 70 CX_TEST_ASSERT(r == 0); | |
| 71 | |
| 72 e = cx_szmul(SIZE_MAX, 0, &r); | |
| 73 CX_TEST_ASSERT(e == 0); | |
| 74 CX_TEST_ASSERT(r == 0); | |
| 75 | |
| 76 e = cx_szmul(0, SIZE_MAX, &r); | |
| 77 CX_TEST_ASSERT(e == 0); | |
| 78 CX_TEST_ASSERT(r == 0); | |
| 79 | |
| 80 e = cx_szmul(0, 0, &r); | |
| 81 CX_TEST_ASSERT(e == 0); | |
| 82 CX_TEST_ASSERT(r == 0); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 #ifdef CX_SZMUL_BUILTIN | |
| 87 | |
| 88 // also test the custom implementation | |
| 89 #undef CX_SZMUL_BUILTIN | |
| 90 | |
| 91 #include "../src/szmul.c" | |
| 92 | |
| 93 #define CX_SZMUL_BUILTIN | |
| 94 | |
| 95 CX_TEST(test_szmul_impl) { | |
| 96 size_t r; | |
| 97 int e; | |
| 98 | |
| 99 CX_TEST_DO { | |
| 100 e = cx_szmul_impl(5, 7, &r); | |
| 101 CX_TEST_ASSERT(e == 0); | |
| 102 CX_TEST_ASSERT(r == 35); | |
| 103 | |
| 104 size_t s = SIZE_MAX & ~3; | |
| 105 | |
| 106 e = cx_szmul_impl(s / 4, 2, &r); | |
| 107 CX_TEST_ASSERT(e == 0); | |
| 108 CX_TEST_ASSERT(r == s / 2); | |
| 109 | |
| 110 e = cx_szmul_impl(2, s / 4, &r); | |
| 111 CX_TEST_ASSERT(e == 0); | |
| 112 CX_TEST_ASSERT(r == s / 2); | |
| 113 | |
| 114 e = cx_szmul_impl(s / 4, 4, &r); | |
| 115 CX_TEST_ASSERT(e == 0); | |
| 116 CX_TEST_ASSERT(r == s); | |
| 117 | |
| 118 e = cx_szmul_impl(4, s / 4, &r); | |
| 119 CX_TEST_ASSERT(e == 0); | |
| 120 CX_TEST_ASSERT(r == s); | |
| 121 | |
| 122 e = cx_szmul_impl(s / 4, 5, &r); | |
| 123 CX_TEST_ASSERT(e != 0); | |
| 124 | |
| 125 e = cx_szmul_impl(5, s / 4, &r); | |
| 126 CX_TEST_ASSERT(e != 0); | |
| 127 | |
| 128 e = cx_szmul_impl(SIZE_MAX - 4, 0, &r); | |
| 129 CX_TEST_ASSERT(e == 0); | |
| 130 CX_TEST_ASSERT(r == 0); | |
| 131 | |
| 132 e = cx_szmul_impl(0, SIZE_MAX - 1, &r); | |
| 133 CX_TEST_ASSERT(e == 0); | |
| 134 CX_TEST_ASSERT(r == 0); | |
| 135 | |
| 136 e = cx_szmul_impl(SIZE_MAX, 0, &r); | |
| 137 CX_TEST_ASSERT(e == 0); | |
| 138 CX_TEST_ASSERT(r == 0); | |
| 139 | |
| 140 e = cx_szmul_impl(0, SIZE_MAX, &r); | |
| 141 CX_TEST_ASSERT(e == 0); | |
| 142 CX_TEST_ASSERT(r == 0); | |
| 143 | |
| 144 e = cx_szmul_impl(0, 0, &r); | |
| 145 CX_TEST_ASSERT(e == 0); | |
| 146 CX_TEST_ASSERT(r == 0); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 #endif // CX_SZMUL_BUILTIN | |
| 151 | |
| 152 | |
| 153 CxTestSuite *cx_test_suite_szmul(void) { | |
| 154 CxTestSuite *suite = cx_test_suite_new("szmul"); | |
| 155 | |
| 156 cx_test_register(suite, test_szmul); | |
| 157 #ifdef CX_SZMUL_BUILTIN | |
| 158 cx_test_register(suite, test_szmul_impl); | |
| 159 #endif | |
| 160 | |
| 161 return suite; | |
| 162 } |
