[PATCH] use build_function_type_list for float128 functions

[Nathan Froyd <froydnj@codesourcery.com>]

When the real16/float128 bits were added to the Fortran FE, some uses of
build_function_type snuck in.  This patch changes them to use
build_function_type_list.

The patch also corrects a small bug: the types for frexp and scalbn had
their argument types in the wrong order.

Tested on x86_64-unknown-linux-gnu.  OK to commit?

-Nathan

	* trans-intrinsic.c (gfc_build_intrinsic_lib_fndecls): Use
	build_function_type_list instead of build_function_type.  Correct
	argument order for func_frexp and func_scalbn.

diff --git a/gcc/fortran/trans-intrinsic.c b/gcc/fortran/trans-intrinsic.c
index a3c2ecd..9a69632 100644
--- a/gcc/fortran/trans-intrinsic.c
+++ b/gcc/fortran/trans-intrinsic.c
@@ -621,35 +621,38 @@ gfc_build_intrinsic_lib_fndecls (void)
        C99-like library functions.  For now, we only handle __float128
        q-suffixed functions.  */
 
-    tree tmp, func_1, func_2, func_cabs, func_frexp;
+    tree type, complex_type, func_1, func_2, func_cabs, func_frexp;
     tree func_lround, func_llround, func_scalbn, func_cpow;
 
     memset (quad_decls, 0, sizeof(tree) * (END_BUILTINS + 1));
 
+    type = float128_type_node;
+    complex_type = complex_float128_type_node;
     /* type (*) (type) */
-    tmp = tree_cons (NULL_TREE, float128_type_node, void_list_node);
-    func_1 = build_function_type (float128_type_node, tmp);
+    func_1 = build_function_type_list (type, type, NULL_TREE);
     /* long (*) (type) */
-    func_lround = build_function_type (long_integer_type_node, tmp);
+    func_lround = build_function_type_list (long_integer_type_node,
+					    type, NULL_TREE);
     /* long long (*) (type) */
-    func_llround = build_function_type (long_long_integer_type_node, tmp);
+    func_llround = build_function_type_list (long_long_integer_type_node,
+					     type, NULL_TREE);
     /* type (*) (type, type) */
-    tmp = tree_cons (NULL_TREE, float128_type_node, tmp);
-    func_2 = build_function_type (float128_type_node, tmp);
+    func_2 = build_function_type_list (type, type, type, NULL_TREE);
     /* type (*) (type, &int) */
-    tmp = tree_cons (NULL_TREE, float128_type_node, void_list_node);
-    tmp = tree_cons (NULL_TREE, build_pointer_type (integer_type_node), tmp);
-    func_frexp = build_function_type (float128_type_node, tmp);
+    func_frexp
+      = build_function_type_list (type,
+				  type,
+				  build_pointer_type (integer_type_node),
+				  NULL_TREE);
     /* type (*) (type, int) */
-    tmp = tree_cons (NULL_TREE, float128_type_node, void_list_node);
-    tmp = tree_cons (NULL_TREE, integer_type_node, tmp);
-    func_scalbn = build_function_type (float128_type_node, tmp);
+    func_scalbn = build_function_type_list (type,
+					    type, integer_type_node, NULL_TREE);
     /* type (*) (complex type) */
-    tmp = tree_cons (NULL_TREE, complex_float128_type_node, void_list_node);
-    func_cabs = build_function_type (float128_type_node, tmp);
+    func_cabs = build_function_type_list (type, complex_type, NULL_TREE);
     /* complex type (*) (complex type, complex type) */
-    tmp = tree_cons (NULL_TREE, complex_float128_type_node, tmp);
-    func_cpow = build_function_type (complex_float128_type_node, tmp);
+    func_cpow
+      = build_function_type_list (complex_type,
+				  complex_type, complex_type, NULL_TREE);
 
 #define DEFINE_MATH_BUILTIN(ID, NAME, ARGTYPE)
 #define DEFINE_MATH_BUILTIN_C(ID, NAME, ARGTYPE)