maint: correct misuse of "a" and "an"

[gnulib.git] / m4 / isnanl.m4

diff --git a/m4/isnanl.m4 b/m4/isnanl.m4
index 5d73759..4c94b4d 100644 (file)
--- a/m4/isnanl.m4
+++ b/m4/isnanl.m4
@@ -15,6 +15,7 @@ AC_DEFUN([gl_FUNC_ISNANL],
       ISNANL_LIBM=-lm
     fi
   fi
+  dnl The variable gl_func_isnanl set here is used by isnan.m4.
   if test $gl_cv_func_isnanl_no_libm = yes \
      || test $gl_cv_func_isnanl_in_libm = yes; then
     save_LIBS="$LIBS"