1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/tests/test_utils.cpp Tue Feb 07 21:55:37 2023 +0100 1.3 @@ -0,0 +1,155 @@ 1.4 +/* 1.5 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. 1.6 + * 1.7 + * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved. 1.8 + * 1.9 + * Redistribution and use in source and binary forms, with or without 1.10 + * modification, are permitted provided that the following conditions are met: 1.11 + * 1.12 + * 1. Redistributions of source code must retain the above copyright 1.13 + * notice, this list of conditions and the following disclaimer. 1.14 + * 1.15 + * 2. Redistributions in binary form must reproduce the above copyright 1.16 + * notice, this list of conditions and the following disclaimer in the 1.17 + * documentation and/or other materials provided with the distribution. 1.18 + * 1.19 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 1.20 + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1.21 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1.22 + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 1.23 + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 1.24 + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 1.25 + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 1.26 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 1.27 + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 1.28 + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1.29 + * POSSIBILITY OF SUCH DAMAGE. 1.30 + */ 1.31 + 1.32 +#include "cx/utils.h" 1.33 + 1.34 +#include <gtest/gtest.h> 1.35 + 1.36 +TEST(Utils, ForN) { 1.37 + unsigned j; 1.38 + j = 0; 1.39 + cx_for_n(i, 50) { 1.40 + EXPECT_EQ(i, j); 1.41 + j++; 1.42 + } 1.43 +} 1.44 + 1.45 +TEST(Utils, szmul) { 1.46 + size_t r; 1.47 + int e; 1.48 + e = cx_szmul(5, 7, &r); 1.49 + EXPECT_EQ(0, e); 1.50 + EXPECT_EQ(35, r); 1.51 + 1.52 + size_t s = SIZE_MAX & ~3; 1.53 + 1.54 + e = cx_szmul(s / 4, 2, &r); 1.55 + EXPECT_EQ(0, e); 1.56 + EXPECT_EQ(s / 2, r); 1.57 + e = cx_szmul(2, s / 4, &r); 1.58 + EXPECT_EQ(0, e); 1.59 + EXPECT_EQ(s / 2, r); 1.60 + 1.61 + e = cx_szmul(s / 4, 4, &r); 1.62 + EXPECT_EQ(0, e); 1.63 + EXPECT_EQ(s, r); 1.64 + 1.65 + e = cx_szmul(4, s / 4, &r); 1.66 + EXPECT_EQ(0, e); 1.67 + EXPECT_EQ(s, r); 1.68 + 1.69 + e = cx_szmul(s / 4, 5, &r); 1.70 + EXPECT_NE(0, e); 1.71 + 1.72 + e = cx_szmul(5, s / 4, &r); 1.73 + EXPECT_NE(0, e); 1.74 + 1.75 + e = cx_szmul(SIZE_MAX - 4, 0, &r); 1.76 + EXPECT_EQ(0, e); 1.77 + EXPECT_EQ(0, r); 1.78 + 1.79 + e = cx_szmul(0, SIZE_MAX - 1, &r); 1.80 + EXPECT_EQ(0, e); 1.81 + EXPECT_EQ(0, r); 1.82 + 1.83 + e = cx_szmul(SIZE_MAX, 0, &r); 1.84 + EXPECT_EQ(0, e); 1.85 + EXPECT_EQ(0, r); 1.86 + 1.87 + e = cx_szmul(0, SIZE_MAX, &r); 1.88 + EXPECT_EQ(0, e); 1.89 + EXPECT_EQ(0, r); 1.90 + 1.91 + e = cx_szmul(0, 0, &r); 1.92 + EXPECT_EQ(0, e); 1.93 + EXPECT_EQ(0, r); 1.94 +} 1.95 + 1.96 +#ifdef CX_SZMUL_BUILTIN 1.97 + 1.98 +// also test the custom implementation 1.99 +struct Utils_szmul_impl : ::testing::Test { 1.100 +#undef CX_SZMUL_BUILTIN 1.101 + 1.102 +#include "../src/utils.c" 1.103 + 1.104 +#define CX_SZMUL_BUILTIN 1.105 +}; 1.106 + 1.107 +TEST_F(Utils_szmul_impl, Test) { 1.108 + size_t r; 1.109 + int e; 1.110 + e = cx_szmul_impl(5, 7, &r); 1.111 + EXPECT_EQ(0, e); 1.112 + EXPECT_EQ(35, r); 1.113 + 1.114 + size_t s = SIZE_MAX & ~3; 1.115 + 1.116 + e = cx_szmul_impl(s / 4, 2, &r); 1.117 + EXPECT_EQ(0, e); 1.118 + EXPECT_EQ(s / 2, r); 1.119 + e = cx_szmul_impl(2, s / 4, &r); 1.120 + EXPECT_EQ(0, e); 1.121 + EXPECT_EQ(s / 2, r); 1.122 + 1.123 + e = cx_szmul_impl(s / 4, 4, &r); 1.124 + EXPECT_EQ(0, e); 1.125 + EXPECT_EQ(s, r); 1.126 + 1.127 + e = cx_szmul_impl(4, s / 4, &r); 1.128 + EXPECT_EQ(0, e); 1.129 + EXPECT_EQ(s, r); 1.130 + 1.131 + e = cx_szmul_impl(s / 4, 5, &r); 1.132 + EXPECT_NE(0, e); 1.133 + 1.134 + e = cx_szmul_impl(5, s / 4, &r); 1.135 + EXPECT_NE(0, e); 1.136 + 1.137 + e = cx_szmul_impl(SIZE_MAX - 4, 0, &r); 1.138 + EXPECT_EQ(0, e); 1.139 + EXPECT_EQ(0, r); 1.140 + 1.141 + e = cx_szmul_impl(0, SIZE_MAX - 1, &r); 1.142 + EXPECT_EQ(0, e); 1.143 + EXPECT_EQ(0, r); 1.144 + 1.145 + e = cx_szmul_impl(SIZE_MAX, 0, &r); 1.146 + EXPECT_EQ(0, e); 1.147 + EXPECT_EQ(0, r); 1.148 + 1.149 + e = cx_szmul_impl(0, SIZE_MAX, &r); 1.150 + EXPECT_EQ(0, e); 1.151 + EXPECT_EQ(0, r); 1.152 + 1.153 + e = cx_szmul_impl(0, 0, &r); 1.154 + EXPECT_EQ(0, e); 1.155 + EXPECT_EQ(0, r); 1.156 +} 1.157 + 1.158 +#endif // CX_SZMUL_BUILTIN