math: Merge strtod_nan_*.h into math-type-macros-*.h

This change will eventually make it possible to compile
stdlib/strtod_nan_main.c as part of math/s_nan_template.c.

1 files changed, 28 insertions, 0 deletions

diff --git a/sysdeps/generic/math-nan-payload-float.h b/sysdeps/generic/math-nan-payload-float.h
new file mode 100644
index 0000000000..2a4ff8ca64
--- /dev/null
+++ b/sysdeps/generic/math-nan-payload-float.h
@@ -0,0 +1,28 @@
+/* NaN payload handling for float.
+   Copyright (C) 1997-2018 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/>.  */
+
+#define SET_NAN_PAYLOAD(flt, mant)		\
+  do						\
+    {						\
+      union ieee754_float u;			\
+      u.f = (flt);				\
+      u.ieee_nan.mantissa = (mant);		\
+      if (u.ieee.mantissa != 0)			\
+	(flt) = u.f;				\
+    }						\
+  while (0)