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STRSPN(3)		    Library Functions Manual		     STRSPN(3)

NAME
       strspn, strcspn -- span a string

LIBRARY
       Standard	C Library (libc, -lc)

SYNOPSIS
       #include	<string.h>

       size_t
       strspn(const char *s, const char	*charset);

       size_t
       strcspn(const char *s, const char *charset);

DESCRIPTION
       The  strspn()  function	spans  the initial part	of the null-terminated
       string s	as long	as the characters from s occur in the  null-terminated
       string  charset.	 In other words, it computes the string	array index of
       the first character of s	which is not in	charset, else the index	of the
       first null character.

       The strcspn() function spans the	initial	part  of  the  null-terminated
       string s	as long	as the characters from s do not	occur in the null-ter-
       minated	string charset (it spans the complement	of charset).  In other
       words, it computes the string array index of the	first character	 of  s
       which is	also in	charset, else the index	of the first null character.

RETURN VALUES
       The  strspn()  and  strcspn() functions return the number of characters
       spanned.

SEE ALSO
       memchr(3), strchr(3),  strpbrk(3),  strrchr(3),	strsep(3),  strstr(3),
       strtok(3), wcsspn(3)

STANDARDS
       The  strspn()  and  strcspn()  functions	 conform  to ISO/IEC 9899:1990
       ("ISO C90").

FreeBSD	13.2			 May 24, 2014			     STRSPN(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO | STANDARDS

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