2018-12-29  Steven G. Kargl  <kargl@gcc.gnu.org>

	* expr.c (external_spec_function): Add ieee_support_subnormal to list
	of IEEE inquiry functions.

2018-12-29  Steven G. Kargl  <kargl@gcc.gnu.org>

	* gfortran.map: Expose subnormal functions in dynamic library.
	* ieee/ieee_arithmetic.F90: Add support for IEEE_SUBNORMAL,
	IEEE_POSITIVE_SUBNORMAL, and IEEE_NEGATIVE_SUBNORMAL.
	* ieee/ieee_helper.c: Ditto.
	* ieee/ieee_features.F90:  Add IEEE_SUBNORMAL.

2018-12-29  Steven G. Kargl  <kargl@gcc.gnu.org>

	* gfortran.dg/ieee/ieee_11.F90: New test.

From-SVN: r267468