1STRSPN(3)                  Linux Programmer's Manual                 STRSPN(3)
2
3
4

NAME

6       strspn, strcspn - get length of a prefix substring
7

SYNOPSIS

9       #include <string.h>
10
11       size_t strspn(const char *s, const char *accept);
12       size_t strcspn(const char *s, const char *reject);
13

DESCRIPTION

15       The  strspn()  function calculates the length (in bytes) of the initial
16       segment of s which consists entirely of bytes in accept.
17
18       The strcspn() function calculates the length of the initial segment  of
19       s which consists entirely of bytes not in reject.
20

RETURN VALUE

22       The  strspn()  function returns the number of bytes in the initial seg‐
23       ment of s which consist only of bytes from accept.
24
25       The strcspn() function returns the number of bytes in the initial  seg‐
26       ment of s which are not in the string reject.
27

ATTRIBUTES

29       For  an  explanation  of  the  terms  used  in  this  section,  see at‐
30       tributes(7).
31
32       ┌────────────────────────────────────────────┬───────────────┬─────────┐
33       │Interface                                   │ Attribute     │ Value   │
34       ├────────────────────────────────────────────┼───────────────┼─────────┤
35       │strspn(), strcspn()                         │ Thread safety │ MT-Safe │
36       └────────────────────────────────────────────┴───────────────┴─────────┘
37

CONFORMING TO

39       POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
40

SEE ALSO

42       index(3),  memchr(3),  rindex(3),  strchr(3),  string(3),   strpbrk(3),
43       strsep(3), strstr(3), strtok(3), wcscspn(3), wcsspn(3)
44

COLOPHON

46       This  page  is  part of release 5.12 of the Linux man-pages project.  A
47       description of the project, information about reporting bugs,  and  the
48       latest     version     of     this    page,    can    be    found    at
49       https://www.kernel.org/doc/man-pages/.
50
51
52
53                                  2021-03-22                         STRSPN(3)
Impressum