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| author | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-02 13:51:02 +0200 |
|---|---|---|
| committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-04-02 13:51:02 +0200 |
| commit | 572676160d5639edc0ecb663147bd291841458d1 (patch) | |
| tree | 26abea75b21e81f568075075249aa3dbedad20c7 /math/bits | |
| parent | 60c414c346a1d5ef0510ffbdc0ab75f288ee4d3f (diff) | |
New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
Diffstat (limited to 'math/bits')
| -rw-r--r-- | math/bits/mathcalls.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/math/bits/mathcalls.h b/math/bits/mathcalls.h index e5af507257..870c54c529 100644 --- a/math/bits/mathcalls.h +++ b/math/bits/mathcalls.h @@ -360,6 +360,12 @@ __MATHCALL (fma,, (_Mdouble_ __x, _Mdouble_ __y, _Mdouble_ __z)); __END_NAMESPACE_C99 #endif +#ifdef __USE_GNU +/* Test for signaling NaN. */ +__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value)) + __attribute__ ((__const__)); +#endif + #if defined __USE_MISC || defined __USE_XOPEN_EXTENDED /* Return X times (2 to the Nth power). */ __MATHCALL (scalb,, (_Mdouble_ __x, _Mdouble_ __n)); |