projects / thirdparty / man-pages.git / blame
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|---|---|---|
| e71c143c AC |
1 | .\" Copyright (c) 2020-2022 by Alejandro Colomar <colomar.6.4.3@gmail.com> |
| 2 | .\" and Copyright (c) 2020 by Michael Kerrisk <mtk.manpages@gmail.com> | |
| 3 | .\" | |
| 4 | .\" SPDX-License-Identifier: Linux-man-pages-copyleft | |
| 5 | .\" | |
| 6 | .\" | |
| ab47278f | 7 | .TH PTRDIFF_T 3type (date) "Linux man-pages (unreleased)" |
| e71c143c AC |
8 | .SH NAME |
| 9 | ptrdiff_t \- count of elements or array index | |
| 10 | .SH LIBRARY | |
| 11 | Standard C library | |
| 12 | .RI ( libc ) | |
| 13 | .SH SYNOPSIS | |
| 14 | .nf | |
| 15 | .B #include <stddef.h> | |
| 16 | .PP | |
| 17 | .BR typedef " /* ... */ " ptrdiff_t; | |
| 18 | .fi | |
| 19 | .SH DESCRIPTION | |
| 20 | Used for a count of elements, or an array index. | |
| 21 | It is the result of subtracting two pointers. | |
| 2325c425 | 22 | It is a signed integer type |
| e71c143c AC |
23 | capable of storing values in the range |
| 24 | .RB [ PTRDIFF_MAX , | |
| 25 | .BR PTRDIFF_MAX ]. | |
| 26 | .PP | |
| 27 | The length modifier for | |
| 28 | .I ptrdiff_t | |
| 29 | for the | |
| 30 | .BR printf (3) | |
| 31 | and the | |
| 32 | .BR scanf (3) | |
| 33 | families of functions is | |
| 34 | .BR t , | |
| 35 | resulting commonly in | |
| 36 | .B %td | |
| 37 | or | |
| 38 | .B %ti | |
| 39 | for printing | |
| 40 | .I ptrdiff_t | |
| 41 | values. | |
| 3113c7f3 | 42 | .SH STANDARDS |
| 801a509d | 43 | C99 and later; |
| e71c143c AC |
44 | POSIX.1-2001 and later. |
| 45 | .SH SEE ALSO | |
| 1971f613 | 46 | .BR size_t (3type) |