* builtins.c (integer_valued_real_p): Handle fmin/fmax.

	(fold_builtin_fmin_fmax): New.
	(fold_builtin_1): Use it.

testsuite:
	* gcc.dg/builtins-20.c: Add fmin/fmax cases.
	* gcc.dg/torture/builtin-minmax-1.c: New.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118976 138bc75d-0d04-0410-961f-82ee72b054a4