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Diffstat (limited to 'manual/arith.texi')
| -rw-r--r-- | manual/arith.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/manual/arith.texi b/manual/arith.texi index d060ff9463..ce8844ec2d 100644 --- a/manual/arith.texi +++ b/manual/arith.texi @@ -387,6 +387,14 @@ to @end smallexample @end deftypefn +@comment math.h +@comment GNU +@deftypefn {Macro} int issignaling (@emph{float-type} @var{x}) +This macro returns a nonzero value if @var{x} is a signaling NaN +(sNaN). It is based on draft TS 18661 and currently enabled as a GNU +extension. +@end deftypefn + Another set of floating-point classification functions was provided by BSD. @Theglibc{} also supports these functions; however, we recommend that you use the ISO C99 macros in new code. Those are standard |