From 515348d54339b29be6765b72057135ab2962d492 Mon Sep 17 00:00:00 2001 From: Alejandro Colomar Date: Fri, 18 Sep 2020 14:04:40 +0200 Subject: [PATCH] system_data_types.7: Document ptrdiff_t Signed-off-by: Alejandro Colomar Signed-off-by: Michael Kerrisk --- man7/system_data_types.7 | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/man7/system_data_types.7 b/man7/system_data_types.7 index 6bcb80d41..7fba9c1be 100644 --- a/man7/system_data_types.7 +++ b/man7/system_data_types.7 @@ -62,6 +62,27 @@ system_data_types \- overview of system data types .\" .\" * See also .TP +.I ptrdiff_t +.IP +Include: +.I . +.IP +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 +.BR "" [ PTRDIFF_MIN , +.BR PTRDIFF_MAX ]. +.IP +Conforming to: C99 and later; POSIX.1-2001 and later. +.IP +See also the +.\".I regoff_t , FIXME: uncomment when regoff_t is documented. +.I size_t +and +.I ssize_t +types in this page. +.TP .I sigval .IP Include: @@ -224,8 +245,10 @@ See also: .BR write (2) .IP See also the +.I ptrdiff_t +and .I size_t -type in this page. +types in this page. .TP .I suseconds_t .IP