al_ustr_find_cset(3)                                      al_ustr_find_cset(3)

NAME
       al_ustr_find_cset - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              int al_ustr_find_cset(const ALLEGRO_USTR *us, int start_pos,
                 const ALLEGRO_USTR *reject)


DESCRIPTION
       This function finds the first code point in us, beginning from byte
       offset start_pos, that does not match any code point in reject.  In
       other words it finds a code point in the complementary set of reject.
       Returns the byte position of that code point, if any.  Otherwise
       returns -1.

SEE ALSO
       al_ustr_find_cset_cstr(3), al_ustr_find_set(3)

Allegro reference manual                                  al_ustr_find_cset(3)