tile: create new math-tests.h header

The header makes tile use the new mechanisms for suppressing
exception and rounding support (the ROUNDING_TESTS_xxx() and
EXCEPTION_TESTS_xxx macros).

More importantly, it also now sets SNAN_TESTS_PRESERVE_PAYLOAD to 0,
since the tilegx fp hardware does not preserve NaN payloads.

diff --git a/ChangeLog b/ChangeLog
index c09246e..4c90aa0 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2016-11-18  Chris Metcalf  <cmetcalf@mellanox.com>
 
+       * sysdeps/tile/math-tests.h: New file.
+
        * sysdeps/unix/sysv/linux/tile/set_dataplane.c
        (__old_set_dataplane): Rename from set_dataplane and make a
        compatibility symbol.

diff --git a/sysdeps/tile/math-tests.h b/sysdeps/tile/math-tests.h
new file mode 100644 (file)
index 0000000..c0a7753
--- /dev/null
+++ b/sysdeps/tile/math-tests.h
@@ -0,0 +1,30 @@
+/* Configuration for math tests.  Tile version.
+   Copyright (C) 2013-2016 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/>.  */
+
+/* Tile hardware/softfloat does not support exceptions and rounding modes.  */
+#define ROUNDING_TESTS_float(MODE)     ((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_double(MODE)    ((MODE) == FE_TONEAREST)
+#define ROUNDING_TESTS_long_double(MODE)       ((MODE) == FE_TONEAREST)
+#define EXCEPTION_TESTS_float  0
+#define EXCEPTION_TESTS_double 0
+#define EXCEPTION_TESTS_long_double    0
+
+/* Tile hardware/softfloat floating-point ops do not preserve NaN payloads.  */
+#define SNAN_TESTS_PRESERVE_PAYLOAD    0
+
+#include_next <math-tests.h>