Set FP options for failing special functions tests

	PR libstdc++/69295
	* testsuite/ext/special_functions/hyperg/check_value.cc: Use
	-ffp-contract=off, and -ffloat-store to disable excess precision.
	* testsuite/special_functions/02_assoc_legendre/check_value.cc: Use
	-ffp-contract=off.

From-SVN: r232879

libstdc++-v3/ChangeLog

+2016-01-27  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/69295
+	* testsuite/ext/special_functions/hyperg/check_value.cc: Use
+	-ffp-contract=off, and -ffloat-store to disable excess precision.
+	* testsuite/special_functions/02_assoc_legendre/check_value.cc: Use
+	-ffp-contract=off.
+
 2016-01-26  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/69478

libstdc++-v3/testsuite/ext/special_functions/hyperg/check_value.cc

-// { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
-//
+// { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__ -ffp-contract=off" }
+// { dg-additional-options "-ffloat-store" { target { m68*-*-* || ia32 } } }
+
 // Copyright (C) 2016 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free

libstdc++-v3/testsuite/special_functions/02_assoc_legendre/check_value.cc

-// { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
-//
+// { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__ -ffp-contract=off" }
+
 // Copyright (C) 2016 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free