From f82a4bdb73328bc53bdcc344622acbd96522a83c Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Fri, 28 Oct 2016 21:15:26 +0000 Subject: Add SNAN, SNANF, SNANL macros. TS 18661-1 defines SNAN macros for signaling NaN values, suitable for use in static initializers. This patch adds them to glibc's (provided you are building with GCC 3.3 or later; no attempt is made to provide any kind of nonconforming fallback for older compilers without the __builtin_nans functions). Tested for x86_64 and x86. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANF): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNAN): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANL): Likewise. * manual/arith.texi (Infinity and NaN): Document SNANF, SNAN and SNANL. * math/test-double.h (snan_value_MACRO): New macro. * math/test-float.h (snan_value_MACRO): Likewise. * math/test-ldouble.h (snan_value_MACRO): Likewise. * math/libm-test.inc (issignaling_test_data): Add tests of snan_value_MACRO. --- NEWS | 2 ++ 1 file changed, 2 insertions(+) (limited to 'NEWS') diff --git a/NEWS b/NEWS index 2da72cdf7a..65184b11da 100644 --- a/NEWS +++ b/NEWS @@ -51,6 +51,8 @@ Version 2.25 * New features are added from TS 18661-1:2014: + - Signaling NaN macros: SNANF, SNAN, SNANL. + - Comparison macros: iseqsig. - Classification macros: iscanonical, issubnormal, iszero. -- cgit v1.2.3-70-g09d2