doc: Mention more ISO TS 18661-1 <math.h> functions.

* doc/posix-functions/roundeven.texi: New file.
* doc/posix-functions/roundevenf.texi: New file.
* doc/posix-functions/roundevenl.texi: New file.
* doc/posix-functions/fromfp.texi: New file.
* doc/posix-functions/fromfpf.texi: New file.
* doc/posix-functions/fromfpl.texi: New file.
* doc/posix-functions/ufromfp.texi: New file.
* doc/posix-functions/ufromfpf.texi: New file.
* doc/posix-functions/ufromfpl.texi: New file.
* doc/posix-functions/fromfpx.texi: New file.
* doc/posix-functions/fromfpxf.texi: New file.
* doc/posix-functions/fromfpxl.texi: New file.
* doc/posix-functions/ufromfpx.texi: New file.
* doc/posix-functions/ufromfpxf.texi: New file.
* doc/posix-functions/ufromfpxl.texi: New file.
* doc/posix-functions/llogb.texi: New file.
* doc/posix-functions/llogbf.texi: New file.
* doc/posix-functions/llogbl.texi: New file.
* doc/posix-functions/fmaxmag.texi: New file.
* doc/posix-functions/fmaxmagf.texi: New file.
* doc/posix-functions/fmaxmagl.texi: New file.
* doc/posix-functions/fminmag.texi: New file.
* doc/posix-functions/fminmagf.texi: New file.
* doc/posix-functions/fminmagl.texi: New file.
* doc/posix-functions/totalorder.texi: New file.
* doc/posix-functions/totalorderf.texi: New file.
* doc/posix-functions/totalorderl.texi: New file.
* doc/posix-functions/totalordermag.texi: New file.
* doc/posix-functions/totalordermagf.texi: New file.
* doc/posix-functions/totalordermagl.texi: New file.
* doc/posix-functions/canonicalize.texi: New file.
* doc/posix-functions/canonicalizef.texi: New file.
* doc/posix-functions/canonicalizel.texi: New file.
* doc/posix-functions/getpayload.texi: New file.
* doc/posix-functions/getpayloadf.texi: New file.
* doc/posix-functions/getpayloadl.texi: New file.
* doc/posix-functions/setpayload.texi: New file.
* doc/posix-functions/setpayloadf.texi: New file.
* doc/posix-functions/setpayloadl.texi: New file.
* doc/posix-functions/setpayloadsig.texi: New file.
* doc/posix-functions/setpayloadsigf.texi: New file.
* doc/posix-functions/setpayloadsigl.texi: New file.
* doc/gnulib.texi (Function Substitutes): Include them.

42 files changed, 1008 insertions, 0 deletions

diff --git a/doc/posix-functions/canonicalize.texi b/doc/posix-functions/canonicalize.texi
new file mode 100644
index 0000000000..22195cb1d6
--- /dev/null
+++ b/doc/posix-functions/canonicalize.texi
@@ -0,0 +1,24 @@
+@node canonicalize
+@section @code{canonicalize}
+@findex canonicalize
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/canonicalizef.texi b/doc/posix-functions/canonicalizef.texi
new file mode 100644
index 0000000000..a0f5297c83
--- /dev/null
+++ b/doc/posix-functions/canonicalizef.texi
@@ -0,0 +1,24 @@
+@node canonicalizef
+@section @code{canonicalizef}
+@findex canonicalizef
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/canonicalizel.texi b/doc/posix-functions/canonicalizel.texi
new file mode 100644
index 0000000000..67404f5b70
--- /dev/null
+++ b/doc/posix-functions/canonicalizel.texi
@@ -0,0 +1,24 @@
+@node canonicalizel
+@section @code{canonicalizel}
+@findex canonicalizel
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fmaxmag.texi b/doc/posix-functions/fmaxmag.texi
new file mode 100644
index 0000000000..c994e191d0
--- /dev/null
+++ b/doc/posix-functions/fmaxmag.texi
@@ -0,0 +1,24 @@
+@node fmaxmag
+@section @code{fmaxmag}
+@findex fmaxmag
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fmaxmagf.texi b/doc/posix-functions/fmaxmagf.texi
new file mode 100644
index 0000000000..edd683ff0e
--- /dev/null
+++ b/doc/posix-functions/fmaxmagf.texi
@@ -0,0 +1,24 @@
+@node fmaxmagf
+@section @code{fmaxmagf}
+@findex fmaxmagf
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fmaxmagl.texi b/doc/posix-functions/fmaxmagl.texi
new file mode 100644
index 0000000000..a9c8a03eb8
--- /dev/null
+++ b/doc/posix-functions/fmaxmagl.texi
@@ -0,0 +1,24 @@
+@node fmaxmagl
+@section @code{fmaxmagl}
+@findex fmaxmagl
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fminmag.texi b/doc/posix-functions/fminmag.texi
new file mode 100644
index 0000000000..fc54edbe72
--- /dev/null
+++ b/doc/posix-functions/fminmag.texi
@@ -0,0 +1,24 @@
+@node fminmag
+@section @code{fminmag}
+@findex fminmag
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fminmagf.texi b/doc/posix-functions/fminmagf.texi
new file mode 100644
index 0000000000..5e2c3492d1
--- /dev/null
+++ b/doc/posix-functions/fminmagf.texi
@@ -0,0 +1,24 @@
+@node fminmagf
+@section @code{fminmagf}
+@findex fminmagf
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fminmagl.texi b/doc/posix-functions/fminmagl.texi
new file mode 100644
index 0000000000..707aa73165
--- /dev/null
+++ b/doc/posix-functions/fminmagl.texi
@@ -0,0 +1,24 @@
+@node fminmagl
+@section @code{fminmagl}
+@findex fminmagl
+
+Documentation:@*
+@ifinfo
+@ref{Misc FP Arithmetic,,Miscellaneous FP arithmetic functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Misc-FP-Arithmetic.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfp.texi b/doc/posix-functions/fromfp.texi
new file mode 100644
index 0000000000..a04c0927dc
--- /dev/null
+++ b/doc/posix-functions/fromfp.texi
@@ -0,0 +1,24 @@
+@node fromfp
+@section @code{fromfp}
+@findex fromfp
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfpf.texi b/doc/posix-functions/fromfpf.texi
new file mode 100644
index 0000000000..8b8cfe1e6e
--- /dev/null
+++ b/doc/posix-functions/fromfpf.texi
@@ -0,0 +1,24 @@
+@node fromfpf
+@section @code{fromfpf}
+@findex fromfpf
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfpl.texi b/doc/posix-functions/fromfpl.texi
new file mode 100644
index 0000000000..1558460ac9
--- /dev/null
+++ b/doc/posix-functions/fromfpl.texi
@@ -0,0 +1,24 @@
+@node fromfpl
+@section @code{fromfpl}
+@findex fromfpl
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfpx.texi b/doc/posix-functions/fromfpx.texi
new file mode 100644
index 0000000000..6b632e8533
--- /dev/null
+++ b/doc/posix-functions/fromfpx.texi
@@ -0,0 +1,24 @@
+@node fromfpx
+@section @code{fromfpx}
+@findex fromfpx
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfpxf.texi b/doc/posix-functions/fromfpxf.texi
new file mode 100644
index 0000000000..5161423671
--- /dev/null
+++ b/doc/posix-functions/fromfpxf.texi
@@ -0,0 +1,24 @@
+@node fromfpxf
+@section @code{fromfpxf}
+@findex fromfpxf
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/fromfpxl.texi b/doc/posix-functions/fromfpxl.texi
new file mode 100644
index 0000000000..7b40bf721d
--- /dev/null
+++ b/doc/posix-functions/fromfpxl.texi
@@ -0,0 +1,24 @@
+@node fromfpxl
+@section @code{fromfpxl}
+@findex fromfpxl
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/getpayload.texi b/doc/posix-functions/getpayload.texi
new file mode 100644
index 0000000000..810651b653
--- /dev/null
+++ b/doc/posix-functions/getpayload.texi
@@ -0,0 +1,24 @@
+@node getpayload
+@section @code{getpayload}
+@findex getpayload
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/getpayloadf.texi b/doc/posix-functions/getpayloadf.texi
new file mode 100644
index 0000000000..b4517aaee7
--- /dev/null
+++ b/doc/posix-functions/getpayloadf.texi
@@ -0,0 +1,24 @@
+@node getpayloadf
+@section @code{getpayloadf}
+@findex getpayloadf
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/getpayloadl.texi b/doc/posix-functions/getpayloadl.texi
new file mode 100644
index 0000000000..b412043269
--- /dev/null
+++ b/doc/posix-functions/getpayloadl.texi
@@ -0,0 +1,24 @@
+@node getpayloadl
+@section @code{getpayloadl}
+@findex getpayloadl
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/llogb.texi b/doc/posix-functions/llogb.texi
new file mode 100644
index 0000000000..16df3672c9
--- /dev/null
+++ b/doc/posix-functions/llogb.texi
@@ -0,0 +1,24 @@
+@node llogb
+@section @code{llogb}
+@findex llogb
+
+Documentation:@*
+@ifinfo
+@ref{Exponents and Logarithms,,Exponentiation and Logarithms,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Exponents-and-Logarithms.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/llogbf.texi b/doc/posix-functions/llogbf.texi
new file mode 100644
index 0000000000..2ed792ac21
--- /dev/null
+++ b/doc/posix-functions/llogbf.texi
@@ -0,0 +1,24 @@
+@node llogbf
+@section @code{llogbf}
+@findex llogbf
+
+Documentation:@*
+@ifinfo
+@ref{Exponents and Logarithms,,Exponentiation and Logarithms,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Exponents-and-Logarithms.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/llogbl.texi b/doc/posix-functions/llogbl.texi
new file mode 100644
index 0000000000..0b99f8a766
--- /dev/null
+++ b/doc/posix-functions/llogbl.texi
@@ -0,0 +1,24 @@
+@node llogbl
+@section @code{llogbl}
+@findex llogbl
+
+Documentation:@*
+@ifinfo
+@ref{Exponents and Logarithms,,Exponentiation and Logarithms,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Exponents-and-Logarithms.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/roundeven.texi b/doc/posix-functions/roundeven.texi
new file mode 100644
index 0000000000..a7a71314df
--- /dev/null
+++ b/doc/posix-functions/roundeven.texi
@@ -0,0 +1,24 @@
+@node roundeven
+@section @code{roundeven}
+@findex roundeven
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/roundevenf.texi b/doc/posix-functions/roundevenf.texi
new file mode 100644
index 0000000000..aa5e113b3f
--- /dev/null
+++ b/doc/posix-functions/roundevenf.texi
@@ -0,0 +1,24 @@
+@node roundevenf
+@section @code{roundevenf}
+@findex roundevenf
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/roundevenl.texi b/doc/posix-functions/roundevenl.texi
new file mode 100644
index 0000000000..4915dfb14e
--- /dev/null
+++ b/doc/posix-functions/roundevenl.texi
@@ -0,0 +1,24 @@
+@node roundevenl
+@section @code{roundevenl}
+@findex roundevenl
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayload.texi b/doc/posix-functions/setpayload.texi
new file mode 100644
index 0000000000..9032f1c012
--- /dev/null
+++ b/doc/posix-functions/setpayload.texi
@@ -0,0 +1,24 @@
+@node setpayload
+@section @code{setpayload}
+@findex setpayload
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayloadf.texi b/doc/posix-functions/setpayloadf.texi
new file mode 100644
index 0000000000..f5db6d49c0
--- /dev/null
+++ b/doc/posix-functions/setpayloadf.texi
@@ -0,0 +1,24 @@
+@node setpayloadf
+@section @code{setpayloadf}
+@findex setpayloadf
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayloadl.texi b/doc/posix-functions/setpayloadl.texi
new file mode 100644
index 0000000000..a6b1c6c8b7
--- /dev/null
+++ b/doc/posix-functions/setpayloadl.texi
@@ -0,0 +1,24 @@
+@node setpayloadl
+@section @code{setpayloadl}
+@findex setpayloadl
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayloadsig.texi b/doc/posix-functions/setpayloadsig.texi
new file mode 100644
index 0000000000..bae0e2ceab
--- /dev/null
+++ b/doc/posix-functions/setpayloadsig.texi
@@ -0,0 +1,24 @@
+@node setpayloadsig
+@section @code{setpayloadsig}
+@findex setpayloadsig
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayloadsigf.texi b/doc/posix-functions/setpayloadsigf.texi
new file mode 100644
index 0000000000..8cb6658eb5
--- /dev/null
+++ b/doc/posix-functions/setpayloadsigf.texi
@@ -0,0 +1,24 @@
+@node setpayloadsigf
+@section @code{setpayloadsigf}
+@findex setpayloadsigf
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/setpayloadsigl.texi b/doc/posix-functions/setpayloadsigl.texi
new file mode 100644
index 0000000000..494ae38eaf
--- /dev/null
+++ b/doc/posix-functions/setpayloadsigl.texi
@@ -0,0 +1,24 @@
+@node setpayloadsigl
+@section @code{setpayloadsigl}
+@findex setpayloadsigl
+
+Documentation:@*
+@ifinfo
+@ref{FP Bit Twiddling,,Setting and modifying single bits of FP values,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Bit-Twiddling.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalorder.texi b/doc/posix-functions/totalorder.texi
new file mode 100644
index 0000000000..b61f2d752a
--- /dev/null
+++ b/doc/posix-functions/totalorder.texi
@@ -0,0 +1,24 @@
+@node totalorder
+@section @code{totalorder}
+@findex totalorder
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalorderf.texi b/doc/posix-functions/totalorderf.texi
new file mode 100644
index 0000000000..4053b9b481
--- /dev/null
+++ b/doc/posix-functions/totalorderf.texi
@@ -0,0 +1,24 @@
+@node totalorderf
+@section @code{totalorderf}
+@findex totalorderf
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalorderl.texi b/doc/posix-functions/totalorderl.texi
new file mode 100644
index 0000000000..9be0c0ca83
--- /dev/null
+++ b/doc/posix-functions/totalorderl.texi
@@ -0,0 +1,24 @@
+@node totalorderl
+@section @code{totalorderl}
+@findex totalorderl
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalordermag.texi b/doc/posix-functions/totalordermag.texi
new file mode 100644
index 0000000000..06260cbcfa
--- /dev/null
+++ b/doc/posix-functions/totalordermag.texi
@@ -0,0 +1,24 @@
+@node totalordermag
+@section @code{totalordermag}
+@findex totalordermag
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalordermagf.texi b/doc/posix-functions/totalordermagf.texi
new file mode 100644
index 0000000000..b3f2eb0477
--- /dev/null
+++ b/doc/posix-functions/totalordermagf.texi
@@ -0,0 +1,24 @@
+@node totalordermagf
+@section @code{totalordermagf}
+@findex totalordermagf
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/totalordermagl.texi b/doc/posix-functions/totalordermagl.texi
new file mode 100644
index 0000000000..016ab451c2
--- /dev/null
+++ b/doc/posix-functions/totalordermagl.texi
@@ -0,0 +1,24 @@
+@node totalordermagl
+@section @code{totalordermagl}
+@findex totalordermagl
+
+Documentation:@*
+@ifinfo
+@ref{FP Comparison Functions,,Floating-Point Comparison Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/FP-Comparison-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfp.texi b/doc/posix-functions/ufromfp.texi
new file mode 100644
index 0000000000..66c8151449
--- /dev/null
+++ b/doc/posix-functions/ufromfp.texi
@@ -0,0 +1,24 @@
+@node ufromfp
+@section @code{ufromfp}
+@findex ufromfp
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfpf.texi b/doc/posix-functions/ufromfpf.texi
new file mode 100644
index 0000000000..7c77d7caa8
--- /dev/null
+++ b/doc/posix-functions/ufromfpf.texi
@@ -0,0 +1,24 @@
+@node ufromfpf
+@section @code{ufromfpf}
+@findex ufromfpf
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfpl.texi b/doc/posix-functions/ufromfpl.texi
new file mode 100644
index 0000000000..5bf9767b7f
--- /dev/null
+++ b/doc/posix-functions/ufromfpl.texi
@@ -0,0 +1,24 @@
+@node ufromfpl
+@section @code{ufromfpl}
+@findex ufromfpl
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfpx.texi b/doc/posix-functions/ufromfpx.texi
new file mode 100644
index 0000000000..e1ffa3ac0f
--- /dev/null
+++ b/doc/posix-functions/ufromfpx.texi
@@ -0,0 +1,24 @@
+@node ufromfpx
+@section @code{ufromfpx}
+@findex ufromfpx
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfpxf.texi b/doc/posix-functions/ufromfpxf.texi
new file mode 100644
index 0000000000..7bf9a79faa
--- /dev/null
+++ b/doc/posix-functions/ufromfpxf.texi
@@ -0,0 +1,24 @@
+@node ufromfpxf
+@section @code{ufromfpxf}
+@findex ufromfpxf
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize
diff --git a/doc/posix-functions/ufromfpxl.texi b/doc/posix-functions/ufromfpxl.texi
new file mode 100644
index 0000000000..4b3a9f33eb
--- /dev/null
+++ b/doc/posix-functions/ufromfpxl.texi
@@ -0,0 +1,24 @@
+@node ufromfpxl
+@section @code{ufromfpxl}
+@findex ufromfpxl
+
+Documentation:@*
+@ifinfo
+@ref{Rounding Functions,,Rounding Functions,libc}.
+@end ifinfo
+@ifnotinfo
+@url{https://www.gnu.org/software/libc/manual/html_node/Rounding-Functions.html}.
+@end ifnotinfo
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on all non-glibc platforms:
+glibc 2.24, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS, Android 9.0.
+@end itemize