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.

1 files changed, 3 insertions, 0 deletions

diff --git a/math/Versions b/math/Versions
index 09888510b1..513ab14244 100644
--- a/math/Versions
+++ b/math/Versions
@@ -198,4 +198,7 @@ libm {
     __gamma_r_finite; __gammaf_r_finite; __gammal_r_finite;
     __exp_finite; __expf_finite; __expl_finite;
   }
+  GLIBC_2.18 {
+    __issignaling; __issignalingf; __issignalingl;
+  }
 }