1 files changed, 80 insertions, 0 deletions
diff --git a/REORG.TODO/math/test-iseqsig-excess-precision.c b/REORG.TODO/math/test-iseqsig-excess-precision.c
new file mode 100644
index 0000000000..e36160c926
--- /dev/null
+++ b/REORG.TODO/math/test-iseqsig-excess-precision.c
@@ -0,0 +1,80 @@
+/* Test iseqsig with excess precision.
+   Copyright (C) 2016-2017 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 <float.h>
+#include <math.h>
+#include <stdio.h>
+
+static int
+do_test (void)
+{
+  int result = 0;
+
+  if (FLT_EVAL_METHOD == 1 || FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 32)
+    {
+      /* Excess precision for float.  */
+      if (iseqsig (1.0f, 1.0f + (float) DBL_EPSILON))
+	{
+	  puts ("iseqsig removes excess precision float -> double");
+	  result = 1;
+	}
+      else
+	puts ("iseqsig preserves excess precision float -> double");
+      if (iseqsig (__builtin_inff (), FLT_MAX * FLT_MAX))
+	{
+	  puts ("iseqsig removes excess range float -> double");
+	  result = 1;
+	}
+      else
+	puts ("iseqsig preserves excess range float -> double");
+    }
+
+  if (FLT_EVAL_METHOD == 2 || FLT_EVAL_METHOD > 64)
+    {
+      /* Excess precision for float and double.  */
+      if (iseqsig (1.0f, 1.0f + (float) LDBL_EPSILON))
+	{
+	  puts ("iseqsig removes excess precision float -> long double");
+	  result = 1;
+	}
+      else
+	puts ("iseqsig preserves excess precision float -> long double");
+      if (iseqsig (1.0, 1.0 + (double) LDBL_EPSILON))
+	{
+	  puts ("iseqsig removes excess precision double -> long double");
+	  result = 1;
+	}
+      else
+	puts ("iseqsig preserves excess precision double -> long double");
+      if (LDBL_MAX_EXP >= 2 * DBL_MAX_EXP)
+	{
+	  if (iseqsig (__builtin_inf (), DBL_MAX * DBL_MAX))
+	    {
+	      puts ("iseqsig removes excess range double -> long double");
+	      result = 1;
+	    }
+	    else
+	      puts ("iseqsig preserves excess range double -> long double");
+	}
+    }
+
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"