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32 .\" @(#)strcspn.3 8.1 (Berkeley) 6/4/93
33 .\" $FreeBSD: src/lib/libc/string/strcspn.3,v 1.9 2007/01/09 00:28:12 imp Exp $
40 .Nd span the complement of a string
46 .Fn strcspn "const char *s" "const char *charset"
51 spans the initial part of the null-terminated string
53 as long as the characters from
55 do not occur in string
62 In other words, it computes the string array index in
64 of the first character of
68 else the index of the first null character.
73 returns the number of characters spanned.