strspn(3) BSD Library Functions Manual strspn(3)
NAME
strspn -- span a string
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <string.h>
size_t
strspn(const char *s1, const char *s2);
DESCRIPTION
The strspn() function spans the initial part of the null-terminated
string s1, as long as the characters from s1 occur in the null-terminated
string s2. In other words, it computes the string array index in s1 of
the first character of s1 which is not in s2, else the index of the first
null character.
RETURN VALUES
The strspn() function returns the number of characters spanned.
SEE ALSO
memchr(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3),
strstr(3), strtok(3), wcsspn(3)
STANDARDS
The strspn() function conforms to ISO/IEC 9899:1990 (``ISO C90'').
BSD June 4, 1993 BSD
Mac OS X 10.8 - Generated Fri Aug 31 07:30:17 CDT 2012