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+2016-12-16  Joseph Myers  <joseph@codesourcery.com>
+
+	* math/fenv.h
+	[__GLIBC_USE (IEC_60559_BFP_EXT) && FE_INVALID && __SUPPORT_SNAN__]
+	(FE_SNANS_ALWAYS_SIGNAL): New macro.
+	* math/test-fe-snans-always-signal.c: New file.
+	* math/Makefile (tests): Add test-fe-snans-always-signal.
+	(CFLAGS-test-fe-snans-always-signal.c): New variable.
+	* manual/arith.texi (Infinity and NaN): Document
+	FE_SNANS_ALWAYS_SIGNAL.
+
 2016-12-16  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* string/test-memchr.c (do_test): Typo on ‘byte’ and missing closing