complex (arg, [...]): Add, implementing TR1, 8.1.9.

2006-01-13  Paolo Carlini  <pcarlini@suse.de>
	    Howard Hinnant  <hhinnant@apple.com>

	* include/tr1/complex (arg, conj, imag, norm, polar, pow, real):
	Add, implementing TR1, 8.1.9.
	(__promote_2): New.
	* include/tr1/common.h: New, provides __promote, __promote_2.
	* include/Makefile.am: Add.
	* include/Makefile.in: Regenerate.
	* testsuite/testsuite_tr1.h (check_ret_type): New.
	* testsuite/tr1/8_c_compatibility/complex/overloads_int.cc: New.
	* testsuite/tr1/8_c_compatibility/complex/overloads_float.cc: New.

Co-Authored-By: Howard Hinnant <hhinnant@apple.com>

From-SVN: r109663