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authorJoseph Myers <joseph@codesourcery.com>2016-10-28 21:15:26 +0000
committerJoseph Myers <joseph@codesourcery.com>2016-10-28 21:16:58 +0000
commitf82a4bdb73328bc53bdcc344622acbd96522a83c (patch)
tree4e5eddb2c0335ee5655a2014949e6e6f1f7d9b45 /math/test-double.h
parent739e14f9009ff91e4a8d01776e7269fc8cbd0293 (diff)
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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 <math.h> (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.
Diffstat (limited to 'math/test-double.h')
-rw-r--r--math/test-double.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/math/test-double.h b/math/test-double.h
index b9e8cd840c..e172b8fb4d 100644
--- a/math/test-double.h
+++ b/math/test-double.h
@@ -27,3 +27,4 @@
#define TYPE_STR "double"
#define LITM(x) x
#define FTOSTR snprintf
+#define snan_value_MACRO SNAN