--- /dev/null
+/* Test of saving the floating-point exception status flags.
+ Copyright (C) 2023 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2023. */
+
+#include <config.h>
+
+/* Specification. */
+#include <fenv.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+ fexcept_t saved_flags_1;
+ fexcept_t saved_flags_2;
+
+ /* Test setting all exception flags. */
+ if (feraiseexcept (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) != 0)
+ {
+ fputs ("Skipping test: floating-point exceptions are not supported on this machine.\n", stderr);
+ return 77;
+ }
+
+ /* Fill saved_flags_1. */
+ ASSERT (fegetexceptflag (&saved_flags_1,
+ FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
+ == 0);
+ /* Check its contents. */
+ ASSERT (fetestexceptflag (&saved_flags_1,
+ FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
+ == (FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT));
+ ASSERT (fetestexceptflag (&saved_flags_1, FE_INVALID) == FE_INVALID);
+ ASSERT (fetestexceptflag (&saved_flags_1, FE_DIVBYZERO) == FE_DIVBYZERO);
+ ASSERT (fetestexceptflag (&saved_flags_1, FE_OVERFLOW) == FE_OVERFLOW);
+ ASSERT (fetestexceptflag (&saved_flags_1, FE_UNDERFLOW) == FE_UNDERFLOW);
+ ASSERT (fetestexceptflag (&saved_flags_1, FE_INEXACT) == FE_INEXACT);
+
+ /* Clear some of the exception flags. */
+ ASSERT (feclearexcept (FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT) == 0);
+ /* Here, the set exception flags are FE_INVALID | FE_DIVBYZERO. */
+ ASSERT (fetestexcept (FE_INVALID) == FE_INVALID);
+ ASSERT (fetestexcept (FE_DIVBYZERO) == FE_DIVBYZERO);
+ ASSERT (fetestexcept (FE_OVERFLOW) == 0);
+ ASSERT (fetestexcept (FE_UNDERFLOW) == 0);
+ ASSERT (fetestexcept (FE_INEXACT) == 0);
+
+ /* Fill saved_flags_2. */
+ ASSERT (fegetexceptflag (&saved_flags_2, FE_INVALID | FE_OVERFLOW) == 0);
+ /* Check its contents. */
+ ASSERT (fetestexceptflag (&saved_flags_2, FE_INVALID | FE_OVERFLOW) == FE_INVALID);
+ ASSERT (fetestexceptflag (&saved_flags_2, FE_INVALID) == FE_INVALID);
+ ASSERT (fetestexceptflag (&saved_flags_2, FE_OVERFLOW) == 0);
+
+ return 0;
+}