upload android base code part3

android/art/runtime/entrypoints/math_entrypoints.cc

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "math_entrypoints.h"
+
+#include "entrypoint_utils-inl.h"
+
+namespace art {
+
+extern "C" double art_l2d(int64_t l) {
+  return static_cast<double>(l);
+}
+
+extern "C" float art_l2f(int64_t l) {
+  return static_cast<float>(l);
+}
+
+/*
+ * Float/double conversion requires clamping to min and max of integer form.  If
+ * target doesn't support this normally, use these.
+ */
+extern "C" int64_t art_d2l(double d) {
+  return art_float_to_integral<int64_t, double>(d);
+}
+
+extern "C" int64_t art_f2l(float f) {
+  return art_float_to_integral<int64_t, float>(f);
+}
+
+extern "C" int32_t art_d2i(double d) {
+  return art_float_to_integral<int32_t, double>(d);
+}
+
+extern "C" int32_t art_f2i(float f) {
+  return art_float_to_integral<int32_t, float>(f);
+}
+
+}  // namespace art