.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" This code is derived from software contributed to Berkeley by
.\" %sccs.include.redist.man%
.\" @(#)strcspn.3 5.2 (Berkeley) %G%
.Nd span the complement of a string
.Fn strcspn "const char *s" "const char *charset"
spans the initial part of the null-terminated string
as long as the characters from
returns the number of characters spanned.