1 /*
2 * Copyright (C) 2005 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "Double"
18
19 #include "JNIHelp.h"
20 #include "JniConstants.h"
21
22 #include <math.h>
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <stdint.h>
26
27 union Double {
28 uint64_t bits;
29 double d;
30 };
31
Double_doubleToRawLongBits(JNIEnv *,jclass,jdouble val)32 static jlong Double_doubleToRawLongBits(JNIEnv*, jclass, jdouble val) {
33 Double d;
34 d.d = val;
35 return d.bits;
36 }
37
Double_longBitsToDouble(JNIEnv *,jclass,jlong val)38 static jdouble Double_longBitsToDouble(JNIEnv*, jclass, jlong val) {
39 Double d;
40 d.bits = val;
41 return d.d;
42 }
43
44 static JNINativeMethod gMethods[] = {
45 NATIVE_METHOD(Double, doubleToRawLongBits, "(D)J"),
46 NATIVE_METHOD(Double, longBitsToDouble, "(J)D"),
47 };
register_java_lang_Double(JNIEnv * env)48 void register_java_lang_Double(JNIEnv* env) {
49 jniRegisterNativeMethods(env, "java/lang/Double", gMethods, NELEM(gMethods));
50 }
51