ptrdiff_t.3type, system_data_types.7: Move ptrdiff_t to a separate page

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>

2 files changed, 50 insertions, 40 deletions

diff --git a/man3/ptrdiff_t.3type b/man3/ptrdiff_t.3type
index db50c0f09..7020c2e15 100644
--- a/man3/ptrdiff_t.3type
+++ b/man3/ptrdiff_t.3type
@@ -1 +1,48 @@
-.so man7/system_data_types.7
+.\" Copyright (c) 2020-2022 by Alejandro Colomar <colomar.6.4.3@gmail.com>
+.\" and Copyright (c) 2020 by Michael Kerrisk <mtk.manpages@gmail.com>
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.\"
+.TH PTRDIFF_T 3type 2022-07-20 Linux "Linux Programmer's Manual"
+.SH NAME
+ptrdiff_t \- count of elements or array index
+.SH LIBRARY
+Standard C library
+.RI ( libc )
+.SH SYNOPSIS
+.nf
+.B #include <stddef.h>
+.PP
+.BR typedef " /* ... */  " ptrdiff_t;
+.fi
+.SH DESCRIPTION
+Used for a count of elements, or an array index.
+It is the result of subtracting two pointers.
+According to ISO C,
+it shall be a signed integer type
+capable of storing values in the range
+.RB [ PTRDIFF_MAX ,
+.BR PTRDIFF_MAX ].
+.PP
+The length modifier for
+.I ptrdiff_t
+for the
+.BR printf (3)
+and the
+.BR scanf (3)
+families of functions is
+.BR t ,
+resulting commonly in
+.B %td
+or
+.B %ti
+for printing
+.I ptrdiff_t
+values.
+.SH CONFORMING TO
+C99 and later.
+POSIX.1-2001 and later.
+.SH SEE ALSO
+.BR size_t (3type),
+.BR ssize_t (3type)
diff --git a/man7/system_data_types.7 b/man7/system_data_types.7
index de1df9417..830395802 100644
--- a/man7/system_data_types.7
+++ b/man7/system_data_types.7
@@ -58,42 +58,6 @@ system_data_types \- overview of system data types
 .\"------------------------------------- off_t ------------------------/
 .\"------------------------------------- pid_t ------------------------/
 .\"------------------------------------- ptrdiff_t --------------------/
-.TP
-.I ptrdiff_t
-.RS
-.IR Include :
-.IR <stddef.h> .
-.PP
-Used for a count of elements, and array indices.
-It is the result of subtracting two pointers.
-According to the C language standard, it shall be a signed integer type
-capable of storing values in the range
-.RB [ PTRDIFF_MIN ,
-.BR PTRDIFF_MAX ].
-.PP
-The length modifier for
-.I ptrdiff_t
-for the
-.BR printf (3)
-and the
-.BR scanf (3)
-families of functions is
-.BR t ;
-resulting commonly in
-.B %td
-or
-.B %ti
-for printing
-.I ptrdiff_t
-values.
-.PP
-.IR "Conforming to" :
-C99 and later; POSIX.1-2001 and later.
-.PP
-.IR "See also" :
-.BR size_t (3type),
-.BR ssize_t (3type)
-.RE
 .\"------------------------------------- regex_t ----------------------/
 .TP
 .I regex_t
@@ -169,13 +133,12 @@ POSIX.1-2001 and later.
 .PP
 .IR "See also" :
 .BR off_t (3type),
+.BR ptrdiff_t (3type),
 .BR ssize_t (3type)
 .PP
 See also the
 .I regmatch_t
-structure and the
-.I ptrdiff_t
-type in this page.
+structure in this page.
 .RE
 .\"------------------------------------- sigevent ---------------------/
 .TP