Section 3 · Library functions

ptrdiff_t.3type

Package: man-pages

ptrdiff_t

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
STANDARDS
HISTORY
SEE ALSO

NAME

ptrdiff_t − count of elements or array index

LIBRARY

Standard C library (libc)

SYNOPSIS

#include <stddef.h>

typedef /* … */ ptrdiff_t;

DESCRIPTION

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 for ptrdiff_t for the printf(3) and the scanf(3) families of functions is t, resulting commonly in %td or %ti for printing ptrdiff_t values.

STANDARDS

C11, POSIX.1-2008.

HISTORY

C89, POSIX.1-2001.