strspn, strcspn — get length of a prefix substring
#include <string.h>
size_t
strspn( |
const char *s, |
const char *accept); |
size_t
strcspn( |
const char *s, |
const char *reject); |
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.
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.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
strspn(), strcspn() |
Thread safety | MT-Safe |
index(3), memchr(3), rindex(3), strchr(3), string(3), strpbrk(3), strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)
This page is part of release 5.11 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/.
|
Copyright 1993 David Metcalfe (davidprism.demon.co.uk) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END References consulted: Linux libc source code Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) 386BSD man pages Modified Sat Jul 24 17:57:50 1993 by Rik Faith (faithcs.unc.edu) |