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ptrdiff_t(3type) — Linux manual page

ptrdiff_t(3type)ptrdiff_t(3type)

NAME        top

       ptrdiff_t - count of elements or array index

LIBRARY        top

       Standard C library (libc)

SYNOPSIS        top

#include <stddef.h>typedef/* ... */ptrdiff_t;

DESCRIPTION        top

       Used for a count of elements, or an array index.  It is the result       of subtracting two pointers.  It is a signed integer type capable       of storing values in the range [PTRDIFF_MIN,PTRDIFF_MAX].       The length modifier forptrdiff_t for theprintf(3) and thescanf(3) families of functions ist, resulting commonly in%tdor%tifor printingptrdiff_t values.

STANDARDS        top

       C11, POSIX.1-2008.

HISTORY        top

       C89, POSIX.1-2001.

SEE ALSO        top

size_t(3type)

COLOPHON        top

       This page is part of theman-pages (Linux kernel and C library       user-space interface documentation) project.  Information about       the project can be found at        ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report       for this manual page, see       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.       This page was obtained from the tarball man-pages-6.15.tar.gz       fetched from       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on       2025-08-11.  If you discover any rendering problems in this HTML       version of the page, or you believe there is a better or more up-       to-date source for the page, or you have corrections or       improvements to the information in this COLOPHON (which isnot       part of the original manual page), send a mail to       man-pages@man7.orgLinux man-pages 6.15            2025-05-17ptrdiff_t(3type)

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