fcvt
====

POSIX specification: https://pubs.opengroup.org/onlinepubs/009695399/functions/fcvt.html

Gnulib module: ---

Portability problems fixed by Gnulib:

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: FreeBSD 6.0, NetBSD 5.0, Android 9.0.

  * This function is marked as ``legacy'' in POSIX.  Better use sprintf instead.