DragonFly On-Line Manual Pages
STRCSPN(3) DragonFly Library Functions Manual STRCSPN(3)
NAME
strcspn -- span the complement of a string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
size_t
strcspn(const char *s, const char *charset);
DESCRIPTION
The strcspn() function spans the initial part of the null-terminated
string s as long as the characters from s do not occur in string charset
(it spans the complement of charset). In other words, it computes the
string array index in s of the first character of s which is also in
charset, else the index of the first null character.
RETURN VALUES
The strcspn() function returns the number of characters spanned.
SEE ALSO
memchr(3), strchr(3), strpbrk(3), strrchr(3), strsep(3), strspn(3),
strstr(3), strtok(3)
STANDARDS
The strcspn() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
DragonFly 3.5 June 4, 1993 DragonFly 3.5