mirror of https://gitee.com/openkylin/glibc.git
131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/* Test fetestexceptflag.
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Copyright (C) 2016-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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static int
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test_one (int exc_test, int exc_set, int exc_save)
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{
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int result = 0;
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printf ("Individual test: %x %x %x\n", (unsigned int) exc_test,
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(unsigned int) exc_set, (unsigned int) exc_save);
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feclearexcept (FE_ALL_EXCEPT);
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int ret = fesetexcept (exc_set);
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if (ret != 0)
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{
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puts ("fesetexcept failed");
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if (exc_set == 0 || EXCEPTION_TESTS (float))
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{
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puts ("failure of fesetexcept was unexpected");
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result = 1;
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}
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else
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puts ("failure of fesetexcept OK, skipping further tests");
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return result;
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}
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fexcept_t saved;
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ret = fegetexceptflag (&saved, exc_save);
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if (ret == 0)
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puts ("fegetexceptflag succeeded");
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else
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{
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puts ("fegetexceptflag failed");
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result = 1;
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return result;
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}
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ret = fetestexceptflag (&saved, exc_test);
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if (ret == (exc_set & exc_test))
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puts ("fetestexceptflag result correct");
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else
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{
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printf ("fetestexceptflag returned %x, expected %x\n", ret,
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exc_set & exc_test);
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result = 1;
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}
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if (exc_save == FE_ALL_EXCEPT)
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{
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/* Also test fetestexceptflag testing all exceptions but
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possibly with only some set. */
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ret = fetestexceptflag (&saved, FE_ALL_EXCEPT);
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if (ret == exc_set)
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puts ("fetestexceptflag (FE_ALL_EXCEPT) result correct");
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else
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{
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printf ("fetestexceptflag (FE_ALL_EXCEPT) returned %x, expected %x\n",
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ret, exc_set);
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result = 1;
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}
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}
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return result;
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}
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static int
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test_fetestexceptflag (int exc, const char *exc_name)
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{
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int result = 0;
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printf ("Testing %s\n", exc_name);
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/* Test each case of: whether this exception is set or clear;
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whether other exceptions are set or clear; whether the whole
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state is saved or just the state for this exception. */
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result |= test_one (exc, 0, exc);
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result |= test_one (exc, 0, FE_ALL_EXCEPT);
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result |= test_one (exc, exc, exc);
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result |= test_one (exc, exc, FE_ALL_EXCEPT);
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result |= test_one (exc, FE_ALL_EXCEPT & ~exc, exc);
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result |= test_one (exc, FE_ALL_EXCEPT & ~exc, FE_ALL_EXCEPT);
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result |= test_one (exc, FE_ALL_EXCEPT, exc);
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result |= test_one (exc, FE_ALL_EXCEPT, FE_ALL_EXCEPT);
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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result |= test_fetestexceptflag (0, "0");
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result |= test_fetestexceptflag (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");
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#ifdef FE_DIVBYZERO
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result |= test_fetestexceptflag (FE_DIVBYZERO, "FE_DIVBYZERO");
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#endif
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#ifdef FE_INEXACT
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result |= test_fetestexceptflag (FE_INEXACT, "FE_INEXACT");
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#endif
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#ifdef FE_INVALID
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result |= test_fetestexceptflag (FE_INVALID, "FE_INVALID");
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#endif
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#ifdef FE_OVERFLOW
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result |= test_fetestexceptflag (FE_OVERFLOW, "FE_OVERFLOW");
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_fetestexceptflag (FE_UNDERFLOW, "FE_UNDERFLOW");
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#endif
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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