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+/* Specify NaN high-order bit conventions. Generic version.
+ Copyright (C) 2016-2018 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 NAN_HIGH_ORDER_BIT_H
+#define NAN_HIGH_ORDER_BIT_H 1
+
+/* Define this macro to 1 if the high-order bit of a NaN's mantissa is
+ set for signaling NaNs and clear for quiet NaNs, 0 otherwise (the
+ preferred IEEE convention). */
+#define HIGH_ORDER_BIT_IS_SET_FOR_SNAN 0
+
+#endif /* nan-high-order-bit.h */