LWG3790 P1467 accidentally changed nexttoward's signature

Author: burblebee

source/numerics.tex

@@ -9160,7 +9160,7 @@
   constexpr float nextafterf(float x, float y);
   constexpr long double nextafterl(long double x, long double y);
 
-  constexpr @\placeholder{floating-point-type}@ nexttoward(@\placeholder{floating-point-type}@ x, @\placeholder{floating-point-type}@ y);
+  constexpr @\placeholder{floating-point-type}@ nexttoward(@\placeholder{floating-point-type}@ x, long double y);
   constexpr float nexttowardf(float x, long double y);
   constexpr long double nexttowardl(long double x, long double y);
 
@@ -9349,6 +9349,11 @@
 a usable candidate\iref{over.match.general}
 from the overloads provided by the implementation.
 
+\pnum
+An invocation of \tcode{nexttoward} is ill-formed if
+the argument corresponding to the \placeholder{floating-point-type} parameter
+has extended floating-point type.
+
 \xrefc{7.12}
 
 \rSec2[c.math.abs]{Absolute values}