strspn(3) — Linux manual page

strspn(3)               Library Functions Manual               strspn(3)

NAME         top

       strspn, strcspn - get length of a prefix substring

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <string.h>

       size_t strspn(const char *s, const char *accept);
       size_t strcspn(const char *s, const char *reject);

DESCRIPTION         top

       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         top

       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         top

       For an explanation of the terms used in this section, see
       attributes(7).

       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │Interface                             │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │strspn(), strcspn()                   │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS         top

       C11, POSIX.1-2008.

HISTORY         top

       POSIX.1-2001, C89, SVr4, 4.3BSD.

SEE ALSO         top

       memchr(3), strchr(3), string(3), strpbrk(3), strsep(3),
       strstr(3), strtok(3), wcscspn(3), wcsspn(3)

Linux man-pages 6.04           2023-03-30                      strspn(3)

Pages that refer to this page: memchr(3),  strchr(3),  string(3),  strpbrk(3),  strsep(3),  strstr(3),  strtok(3),  wcscspn(3),  wcsspn(3),  signal-safety(7)

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