@node atanpif
@subsection @code{atanpif}
@findex atanpif

ISO C23 specification:@* @url{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n3220.pdf} section 7.12.4.10

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on all platforms:
glibc 2.40, macOS 14, FreeBSD 14.0, NetBSD 10.0, OpenBSD 7.5, Minix 3.3.0, AIX 7.3.1, HP-UX 11.31, Solaris 11.4, Cygwin 3.5.3, mingw, MSVC 14, Android.
@end itemize
