@node modff
@subsection @code{modff}
@findex modff

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/modff.html}

Gnulib module: modff or modff-ieee
@mindex modff
@mindex modff-ieee

Portability problems fixed by either Gnulib module @code{modff} or @code{modff-ieee}:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, AIX 5.1, HP-UX 11.
@item
This function is only defined as a buggy macro with arguments on some platforms:
MSVC 14.
@end itemize

Portability problems fixed by Gnulib module @code{modff-ieee}:
@itemize
@item
This function has problems with a NaN argument on some platforms:
NetBSD 5.1, OpenBSD 7.5, Solaris 9, Cygwin.
@item
This function has problems with infinite arguments on some platforms:
mingw with MSVCRT.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize
