intrinsified python_cext PyFloat_XXX

Author: tomasstupka

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/PythonCextBuiltins.java

@@ -2364,6 +2364,28 @@ Object fromString(VirtualFrame frame, String s, long base, @SuppressWarnings("un
         }
     }
 
+    ///////////// float /////////////
+
+    @Builtin(name = "PyFloat_FromDouble", minNumOfPositionalArgs = 1)
+    @GenerateNodeFactory
+    abstract static class PyFloatFromDoubleNode extends PythonUnaryBuiltinNode {
+
+        @Specialization
+        double fromDouble(double d) {
+            return d;
+        }
+
+        @Specialization(guards = {"!isDouble(obj)"})
+        public Object fromDouble(VirtualFrame frame, Object obj,
+                        @SuppressWarnings("unused") @Cached GetClassNode getClassNode,
+                        @SuppressWarnings("unused") @Cached IsSubtypeNode isSubtypeNode,
+                        @Cached StrNode strNode,
+                        @Cached PRaiseNativeNode raiseNativeNode) {
+            // cpython PyFloat_FromDouble takes only 'double'
+            return raiseNativeNode.raiseInt(frame, -1, SystemError, BAD_ARG_TO_INTERNAL_FUNC_WAS_S_P, strNode.executeWith(frame, obj), obj);
+        }
+    }
+    
     /**
      * This is used in the ExternalFunctionNode below, so all arguments passed from Python code into
      * a C function are automatically unwrapped if they are wrapped. This function is also called

graalpython/lib-graalpython/python_cext.py

@@ -66,13 +66,6 @@ def PyDictProxy_New(mapping):
     mappingproxy = type(type.__dict__)
     return mappingproxy(mapping)
 
-##################### FLOAT
-
-@may_raise
-def PyFloat_FromDouble(n):
-    return float(n)
-
-
 ##################### COMPLEX
 
 @may_raise