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| author | Joseph Myers <joseph@codesourcery.com> | 2016-10-28 21:15:26 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-10-28 21:16:58 +0000 |
| commit | f82a4bdb73328bc53bdcc344622acbd96522a83c (patch) | |
| tree | 4e5eddb2c0335ee5655a2014949e6e6f1f7d9b45 /math/test-double.h | |
| parent | 739e14f9009ff91e4a8d01776e7269fc8cbd0293 (diff) | |
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.h | 1 |
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 |