93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
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/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "It_test_sys.h"
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static void ShowFeExceptions(void)
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{
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printf("current exceptions raised: ");
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if (fetestexcept(FE_DIVBYZERO)) {
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printf(" FE_DIVBYZERO");
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}
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if (fetestexcept(FE_INEXACT)) {
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printf(" FE_INEXACT");
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}
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if (fetestexcept(FE_INVALID)) {
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printf(" FE_INVALID");
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}
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if (fetestexcept(FE_OVERFLOW)) {
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printf(" FE_OVERFLOW");
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}
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if (fetestexcept(FE_UNDERFLOW)) {
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printf(" FE_UNDERFLOW");
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}
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if (fetestexcept(FE_ALL_EXCEPT) == 0) {
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printf(" none");
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}
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printf("\n");
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}
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static double X2(double x) /* times two */
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{
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fenv_t currExcepts;
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/* Save and clear current f-p environment. */
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feholdexcept(&currExcepts);
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/* Raise inexact and overflow exceptions. */
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printf("In x2(): x = %f\n", x = x * 2.0);
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ShowFeExceptions();
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feclearexcept(FE_INEXACT); /* hide inexact exception from caller */
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/* Merge caller's exceptions (FE_INVALID) */
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/* with remaining x2's exceptions (FE_OVERFLOW). */
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feupdateenv(&currExcepts);
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return x;
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}
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static UINT32 TestCase(VOID)
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{
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feclearexcept(FE_ALL_EXCEPT);
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feraiseexcept(FE_INVALID); /* some computation with invalid argument */
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ShowFeExceptions();
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printf("x2(DBL_MAX) = %f\n", X2(DBL_MAX));
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ShowFeExceptions();
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return 0;
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EXIT:
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return -1;
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}
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VOID ItTestSys014(VOID)
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{
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TEST_ADD_CASE(__FUNCTION__, TestCase, TEST_POSIX, TEST_MEM, TEST_LEVEL0, TEST_FUNCTION);
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}
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