@node y1
@section @code{y1}
@findex y1

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/y1.html}

Gnulib module: y1

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8.
@end itemize