1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/test_utils.cpp Tue Dec 20 14:12:36 2022 +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
