trunc
=====

POSIX specification:
 http://www.opengroup.org/onlinepubs/9699919799/functions/trunc.html

Gnulib module: trunc

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: FreeBSD 5.2.1, NetBSD 3.0, OpenBSD 3.8, Solaris 9, Interix 3.5.

  * This function is not declared (without -D_GNU_SOURCE) on some platforms: glibc 2.8.

Portability problems not fixed by Gnulib: