Function avr_libc::strcspn

pub unsafe extern "C" fn strcspn(__s: *const i8, __reject: *const i8) -> size_t

\ingroup avr_string \fn size_t strcspn(const char *s, const char *reject)

The strcspn() function calculates the length of the initial segment of \p s which consists entirely of characters not in \p reject.

\return The strcspn() function returns the number of characters in the initial segment of \p s which are not in the string \p reject. The terminating zero is not considered as a part of string.