1 /*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 #include "It_test_sys.h"
32
ShowFeExceptions(void)33 static void ShowFeExceptions(void)
34 {
35 printf("current exceptions raised: ");
36 if (fetestexcept(FE_DIVBYZERO)) {
37 printf(" FE_DIVBYZERO");
38 }
39 if (fetestexcept(FE_INEXACT)) {
40 printf(" FE_INEXACT");
41 }
42 if (fetestexcept(FE_INVALID)) {
43 printf(" FE_INVALID");
44 }
45 if (fetestexcept(FE_OVERFLOW)) {
46 printf(" FE_OVERFLOW");
47 }
48 if (fetestexcept(FE_UNDERFLOW)) {
49 printf(" FE_UNDERFLOW");
50 }
51 if (fetestexcept(FE_ALL_EXCEPT) == 0) {
52 printf(" none");
53 }
54 printf("\n");
55 }
56
X2(double x)57 static double X2(double x) /* times two */
58 {
59 fenv_t currExcepts;
60
61 /* Save and clear current f-p environment. */
62 feholdexcept(&currExcepts);
63
64 /* Raise inexact and overflow exceptions. */
65 printf("In x2(): x = %f\n", x = x * 2.0);
66 ShowFeExceptions();
67 feclearexcept(FE_INEXACT); /* hide inexact exception from caller */
68
69 /* Merge caller's exceptions (FE_INVALID) */
70 /* with remaining x2's exceptions (FE_OVERFLOW). */
71 feupdateenv(&currExcepts);
72 return x;
73 }
74
TestCase(VOID)75 static UINT32 TestCase(VOID)
76 {
77 feclearexcept(FE_ALL_EXCEPT);
78 feraiseexcept(FE_INVALID); /* some computation with invalid argument */
79 ShowFeExceptions();
80 printf("x2(DBL_MAX) = %f\n", X2(DBL_MAX));
81 ShowFeExceptions();
82
83 return 0;
84 EXIT:
85 return -1;
86 }
87
88
ItTestSys014(VOID)89 VOID ItTestSys014(VOID)
90 {
91 TEST_ADD_CASE(__FUNCTION__, TestCase, TEST_POSIX, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
92 }
93