PR fortran/33197
	* gfortran.h (HAVE_mpc_arc): Define.
	* simplify.c (gfc_simplify_acos): Handle complex acos.
	(gfc_simplify_acosh): Likewise for acosh.
	(gfc_simplify_asin): Likewise for asin.
	(gfc_simplify_asinh): Likewise for asinh.
	(gfc_simplify_atan): Likewise for atan.
	(gfc_simplify_atanh): Likewise for atanh.

From-SVN: r152394