STRSPN
Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Page Index
NAME
strspn, strcspn - get length of a prefix substring
SYNOPSIS
#include <string.h>
size_t strspn(const char *s, const char *accept);
size_t strcspn(const char *s, const char *reject);
DESCRIPTION
The
strspn()
function calculates the length (in bytes) of the initial
segment of
s
which consists entirely of bytes in
accept.
The
strcspn()
function calculates the length of the initial
segment of
s
which consists entirely of bytes not in
reject.
RETURN VALUE
The
strspn()
function returns the number of bytes in
the initial segment of
s
which consist only of bytes
from
accept.
The
strcspn()
function returns the number of bytes in
the initial segment of
s
which are not in the string
reject.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
strspn(),
strcspn()
| Thread safety | MT-Safe
|
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
SEE ALSO
index(3),
memchr(3),
rindex(3),
strchr(3),
string(3),
strpbrk(3),
strsep(3),
strstr(3),
strtok(3),
wcscspn(3),
wcsspn(3)
COLOPHON
This page is part of release 5.10 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.