[BZ #5857]

2008-03-09  Andreas Jaeger  <aj@suse.de>
	[BZ #5857]
	* sysdeps/ieee754/dbl-64/s_rint.c (__rint): Handle j0==18.
	* sysdeps/ieee754/dbl-64/s_nearbyint.c (__nearbyint): Likewise.
  	Patch by Mark Elliott <mark.h.elliott@lmco.com>.

	* math/libm-test.inc (nearbyint_test): Add new test cases from #5857.
	(rint_test): Likewise.