Add setpayloadsig, setpayloadsigf, setpayloadsigl.

[glibc.git] / manual / arith.texi

diff --git a/manual/arith.texi b/manual/arith.texi
index 07dd733844850096d83e86a712d13fc4fb423fb6..f9296a362e3dadd9481a551c5c37937408e6da5d 100644 (file)
--- a/manual/arith.texi
+++ b/manual/arith.texi
@@ -1932,6 +1932,24 @@ object pointed to by @var{x} is set to positive zero and a nonzero
 value is returned.  They raise no floating-point exceptions.
 @end deftypefun
 
+@comment math.h
+@comment ISO
+@deftypefun int setpayloadsig (double *@var{x}, double @var{payload})
+@comment math.h
+@comment ISO
+@deftypefunx int setpayloadsigf (float *@var{x}, float @var{payload})
+@comment math.h
+@comment ISO
+@deftypefunx int setpayloadsigl (long double *@var{x}, long double @var{payload})
+@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
+These functions, defined by TS 18661-1:2014, set the object pointed to
+by @var{x} to a signaling NaN with payload @var{payload} and a zero
+sign bit and return zero.  If @var{payload} is not a positive-signed
+integer that is a valid payload for a signaling NaN of the given type,
+the object pointed to by @var{x} is set to positive zero and a nonzero
+value is returned.  They raise no floating-point exceptions.
+@end deftypefun
+
 @node FP Comparison Functions
 @subsection Floating-Point Comparison Functions
 @cindex unordered comparison