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-rw-r--r--math/test-femode.c231
1 files changed, 231 insertions, 0 deletions
diff --git a/math/test-femode.c b/math/test-femode.c
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+++ b/math/test-femode.c
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+/* Test femode_t functions.
+   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_mmee (int mode1, int mode2, int exc1, int exc2)
+{
+  int result = 0;
+  printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2,
+	  (unsigned int) exc1, (unsigned int) exc2);
+
+  feclearexcept (FE_ALL_EXCEPT);
+  int ret = fesetround (mode1);
+  if (ret != 0)
+    {
+      if (ROUNDING_TESTS (float, mode1))
+	{
+	  puts ("first fesetround failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("first fesetround failed, cannot test");
+      return result;
+    }
+  ret = fesetexcept (exc1);
+  if (ret != 0)
+    {
+      if (EXCEPTION_TESTS (float) || exc1 == 0)
+	{
+	  puts ("first fesetexcept failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("first fesetexcept failed, cannot test");
+      return result;
+    }
+  femode_t saved;
+  ret = fegetmode (&saved);
+  if (ret != 0)
+    {
+      puts ("fegetmode failed");
+      result = 1;
+      return result;
+    }
+  feclearexcept (FE_ALL_EXCEPT);
+  ret = fesetround (mode2);
+  if (ret != 0)
+    {
+      if (ROUNDING_TESTS (float, mode2))
+	{
+	  puts ("second fesetround failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("second fesetround failed, cannot test");
+      return result;
+    }
+  ret = fesetexcept (exc2);
+  if (ret != 0)
+    {
+      if (EXCEPTION_TESTS (float) || exc2 == 0)
+	{
+	  puts ("second fesetexcept failed unexpectedly");
+	  result = 1;
+	}
+      else
+	puts ("second fesetexcept failed, cannot test");
+      return result;
+    }
+  ret = fesetmode (&saved);
+  if (ret != 0)
+    {
+      puts ("fesetmode failed");
+      result = 1;
+      return result;
+    }
+  /* Verify that the rounding mode was restored but the exception
+     flags remain unchanged.  */
+  ret = fegetround ();
+  if (ret != mode1)
+    {
+      printf ("restored rounding mode %x not %x\n", (unsigned int) ret,
+	      (unsigned int) mode1);
+      result = 1;
+    }
+  ret = fetestexcept (FE_ALL_EXCEPT);
+  if (ret != exc2)
+    {
+      printf ("exceptions %x not %x\n", (unsigned int) ret,
+	      (unsigned int) exc2);
+      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 = fegetround ();
+  if (ret != FE_TONEAREST)
+    {
+      printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret,
+	      (unsigned int) FE_TONEAREST);
+      result = 1;
+    }
+  ret = fetestexcept (FE_ALL_EXCEPT);
+  if (ret != exc2)
+    {
+      printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret,
+	      (unsigned int) exc2);
+      result = 1;
+    }
+  return result;
+}
+
+static int
+test_mme (int mode1, int mode2, int exc1)
+{
+  int result = 0;
+
+  result |= test_mmee (mode1, mode2, exc1, 0);
+  result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT);
+#ifdef FE_DIVBYZERO
+  result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+  result |= test_mmee (mode1, mode2, exc1, FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+  result |= test_mmee (mode1, mode2, exc1, FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+  result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW);
+#endif
+#ifdef FE_UNDERFLOW
+  result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW);
+#endif
+
+  return result;
+}
+
+static int
+test_mm (int mode1, int mode2)
+{
+  int result = 0;
+
+  result |= test_mme (mode1, mode2, 0);
+  result |= test_mme (mode1, mode2, FE_ALL_EXCEPT);
+#ifdef FE_DIVBYZERO
+  result |= test_mme (mode1, mode2, FE_DIVBYZERO);
+#endif
+#ifdef FE_INEXACT
+  result |= test_mme (mode1, mode2, FE_INEXACT);
+#endif
+#ifdef FE_INVALID
+  result |= test_mme (mode1, mode2, FE_INVALID);
+#endif
+#ifdef FE_OVERFLOW
+  result |= test_mme (mode1, mode2, FE_OVERFLOW);
+#endif
+#ifdef FE_UNDERFLOW
+  result |= test_mme (mode1, mode2, FE_UNDERFLOW);
+#endif
+
+  return result;
+}
+
+static int
+test_m (int mode1)
+{
+  int result = 0;
+
+#ifdef FE_DOWNWARD
+  result |= test_mm (mode1, FE_DOWNWARD);
+#endif
+#ifdef FE_TONEAREST
+  result |= test_mm (mode1, FE_TONEAREST);
+#endif
+#ifdef FE_TOWARDZERO
+  result |= test_mm (mode1, FE_TOWARDZERO);
+#endif
+#ifdef FE_UPWARD
+  result |= test_mm (mode1, FE_UPWARD);
+#endif
+
+  return result;
+}
+
+static int
+do_test (void)
+{
+  int result = 0;
+
+#ifdef FE_DOWNWARD
+  result |= test_m (FE_DOWNWARD);
+#endif
+#ifdef FE_TONEAREST
+  result |= test_m (FE_TONEAREST);
+#endif
+#ifdef FE_TOWARDZERO
+  result |= test_m (FE_TOWARDZERO);
+#endif
+#ifdef FE_UPWARD
+  result |= test_m (FE_UPWARD);
+#endif
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"