ucx: test/test_utils.cpp@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  */

    29 #include "cx/utils.h"

    31 #include <gtest/gtest.h>

    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 }

    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);

    49     size_t s = SIZE_MAX & ~3;

    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);

    58     e = cx_szmul(s / 4, 4, &r);

    59     EXPECT_EQ(0, e);

    60     EXPECT_EQ(s, r);

    62     e = cx_szmul(4, s / 4, &r);

    63     EXPECT_EQ(0, e);

    64     EXPECT_EQ(s, r);

    66     e = cx_szmul(s / 4, 5, &r);

    67     EXPECT_NE(0, e);

    69     e = cx_szmul(5, s / 4, &r);

    70     EXPECT_NE(0, e);

    72     e = cx_szmul(SIZE_MAX - 4, 0, &r);

    73     EXPECT_EQ(0, e);

    74     EXPECT_EQ(0, r);

    76     e = cx_szmul(0, SIZE_MAX - 1, &r);

    77     EXPECT_EQ(0, e);

    78     EXPECT_EQ(0, r);

    80     e = cx_szmul(SIZE_MAX, 0, &r);

    81     EXPECT_EQ(0, e);

    82     EXPECT_EQ(0, r);

    84     e = cx_szmul(0, SIZE_MAX, &r);

    85     EXPECT_EQ(0, e);

    86     EXPECT_EQ(0, r);

    88     e = cx_szmul(0, 0, &r);

    89     EXPECT_EQ(0, e);

    90     EXPECT_EQ(0, r);

    91 }

    93 #ifdef CX_SZMUL_BUILTIN

    95 // also test the custom implementation

    96 struct Utils_szmul_impl : ::testing::Test {

    97 #undef CX_SZMUL_BUILTIN

    99 #include "../src/utils.c"

   101 #define CX_SZMUL_BUILTIN

   102 };

   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);

   111     size_t s = SIZE_MAX & ~3;

   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);

   120     e = cx_szmul_impl(s / 4, 4, &r);

   121     EXPECT_EQ(0, e);

   122     EXPECT_EQ(s, r);

   124     e = cx_szmul_impl(4, s / 4, &r);

   125     EXPECT_EQ(0, e);

   126     EXPECT_EQ(s, r);

   128     e = cx_szmul_impl(s / 4, 5, &r);

   129     EXPECT_NE(0, e);

   131     e = cx_szmul_impl(5, s / 4, &r);

   132     EXPECT_NE(0, e);

   134     e = cx_szmul_impl(SIZE_MAX - 4, 0, &r);

   135     EXPECT_EQ(0, e);

   136     EXPECT_EQ(0, r);

   138     e = cx_szmul_impl(0, SIZE_MAX - 1, &r);

   139     EXPECT_EQ(0, e);

   140     EXPECT_EQ(0, r);

   142     e = cx_szmul_impl(SIZE_MAX, 0, &r);

   143     EXPECT_EQ(0, e);

   144     EXPECT_EQ(0, r);

   146     e = cx_szmul_impl(0, SIZE_MAX, &r);

   147     EXPECT_EQ(0, e);

   148     EXPECT_EQ(0, r);

   150     e = cx_szmul_impl(0, 0, &r);

   151     EXPECT_EQ(0, e);

   152     EXPECT_EQ(0, r);

   153 }

   155 #endif // CX_SZMUL_BUILTIN

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