re PR fortran/55548 (SYSTEM_CLOCK with integer(8) provides nanosecond resolution, but only microsecond precision (without -lrt))

2012-12-03  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/55548
	* intrinsics/system_clock.c (gf_gettime_mono): Add argument 'tck',
	which returns the clock resolution.
	(system_clock_4): Get resolution from gf_gettime_mono, but limit to
	1000/s.
	(system_clock_8): Get resolution from gf_gettime_mono.

2012-12-03  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/55548
	* intrinsic.texi (SYSTEM_CLOCK): Update documentation of SYSTEM_CLOCK.

From-SVN: r194105