New <math.h> macro named issignaling to check for a signaling NaN (sNaN).

It is based on draft TS 18661 and currently enabled as a GNU extension.

1 files changed, 27 insertions, 0 deletions

diff --git a/ports/sysdeps/hppa/math_private.h b/ports/sysdeps/hppa/math_private.h
new file mode 100644
index 0000000000..03b0711e06
--- /dev/null
+++ b/ports/sysdeps/hppa/math_private.h
@@ -0,0 +1,27 @@
+/* Internal math stuff.  HPPA version.
+   Copyright (C) 2013 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/>.  */
+
+#ifndef _MATH_PRIVATE_H
+
+/* One of the few architectures where the meaning of the quiet/signaling bit is
+   inverse to IEEE 754-2008 (as well as common practice for IEEE 754-1985).  */
+#define HIGH_ORDER_BIT_IS_SET_FOR_SNAN
+
+#include_next <math_private.h>
+
+#endif