1 files changed, 149 insertions, 0 deletions
diff --git a/math/test-femode-traps.c b/math/test-femode-traps.c
new file mode 100644
index 0000000000..dd22765831
--- /dev/null
+++ b/math/test-femode-traps.c
@@ -0,0 +1,149 @@
+/* Test femode_t functions: test handling of exception traps.
+   Copyright (C) 2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <stdio.h>
+#include <math-tests.h>
+
+static int
+test_ee (int exc1, int exc2)
+{
+  int result = 0;
+  printf ("testing %x %x\n", (unsigned int) exc1, (unsigned int) exc2);
+
+  fedisableexcept (FE_ALL_EXCEPT);
+  int ret = feenableexcept (exc1);
+  if (ret == -1)
+    {
+      if (EXCEPTION_ENABLE_SUPPORTED (exc1))
+	{
+	  puts ("first feenableexcept failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("first feenableexcept failed, cannot test");
+      return result;
+    }
+  femode_t saved;
+  ret = fegetmode (&saved);
+  if (ret != 0)
+    {
+      puts ("fegetmode failed");
+      result = 1;
+      return result;
+    }
+  fedisableexcept (FE_ALL_EXCEPT);
+  ret = feenableexcept (exc2);
+  if (ret == -1)
+    {
+      if (EXCEPTION_ENABLE_SUPPORTED (exc2))
+	{
+	  puts ("second feenableexcept failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("second feenableexcept failed, cannot test");
+      return result;
+    }
+  ret = fesetmode (&saved);
+  if (ret != 0)
+    {
+      puts ("fesetmode failed");
+      result = 1;
+      return result;
+    }
+  /* Verify that the set of enabled traps was restored.  */
+  ret = fegetexcept ();
+  if (ret != exc1)
+    {
+      printf ("restored enabled traps %x not %x\n", (unsigned int) ret,
+	      (unsigned int) exc1);
+      result = 1;
+    }
+  /* Likewise, with default modes.  */
+  ret = fesetmode (FE_DFL_MODE);
+  if (ret != 0)
+    {
+      puts ("fesetmode (FE_DFL_MODE) failed");
+      result = 1;
+      return result;
+    }
+  ret = fegetexcept ();
+  if (ret != 0)
+    {
+      printf ("FE_DFL_MODE enabled traps %x not 0\n", (unsigned int) ret);
+      result = 1;
+    }
+
+  return result;
+}
+
+static int
+test_e (int exc1)
+{
+  int result = 0;
+
+  result |= test_ee (exc1, 0);
+  result |= test_ee (exc1, FE_ALL_EXCEPT);
+#ifdef FE_DIVBYZERO
+  result |= test_ee (exc1, FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+  result |= test_ee (exc1, FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+  result |= test_ee (exc1, FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+  result |= test_ee (exc1, FE_OVERFLOW);
+#endif
+#ifdef FE_UNDERFLOW
+  result |= test_ee (exc1, FE_UNDERFLOW);
+#endif
+
+  return result;
+}
+
+static int
+do_test (void)
+{
+  int result = 0;
+
+  result |= test_e (0);
+  result |= test_e (FE_ALL_EXCEPT);
+#ifdef FE_DIVBYZERO
+  result |= test_e (FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+  result |= test_e (FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+  result |= test_e (FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+  result |= test_e (FE_OVERFLOW);
+#endif
+#ifdef FE_UNDERFLOW
+  result |= test_e (FE_UNDERFLOW);
+#endif
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"