5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/modf.html}
7 Gnulib module: modf or modf-ieee
9 Portability problems fixed by either Gnulib module @code{modf} or @code{modf-ieee}:
13 Portability problems fixed by Gnulib module @code{modf-ieee}:
16 This function has problems with a NaN argument on some platforms:
19 This function has problems with infinite arguments on some platforms:
20 FreeBSD 6.4, OpenBSD 6.7, IRIX 6.5.
23 Portability problems not fixed by Gnulib: