ref: c43561c89b53aa1ccd0d98acd400ad059ab99fb0
dir: /doc/man3/strspn.3/
.TH strspn 3 .SH NAME strspn - get length of substring .SH SYNOPSIS #include <string.h> size_t strspn(const char *s1, const char *s2) .SH DESCRIPTION The .BR strspn () function computes the length of the maximum initial segment of string pointed to by .I s1 which consists entirely of characters from the string pointed to by .IR s2 . .SH RETURN VALUE The .BR strcspn () function shall return the length of the segment. .SH STANDARDS ISO/IEC 9899:1999 Section 7.21.5.6