1/*
2 * Copyright (c) 1997, 2005, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26#include "jni.h"
27#include "jni_util.h"
28#include "jlong.h"
29#include "jvm.h"
30
31#include "java_lang_Double.h"
32
33/*
34 * Find the double float corresponding to a given bit pattern
35 */
36JNIEXPORT jdouble JNICALL
37Java_java_lang_Double_longBitsToDouble(JNIEnv *env, jclass unused, jlong v)
38{
39 union {
40 jlong l;
41 double d;
42 } u;
43 jlong_to_jdouble_bits(&v);
44 u.l = v;
45 return (jdouble)u.d;
46}
47
48/*
49 * Find the bit pattern corresponding to a given double float, NOT collapsing NaNs
50 */
51JNIEXPORT jlong JNICALL
52Java_java_lang_Double_doubleToRawLongBits(JNIEnv *env, jclass unused, jdouble v)
53{
54 union {
55 jlong l;
56 double d;
57 } u;
58 jdouble_to_jlong_bits(&v);
59 u.d = (double)v;
60 return u.l;
61}
62