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 "jvm.h"

       28 

       29 #include "java_lang_Float.h"

       30 

       31 /*

       32  * Find the float corresponding to a given bit pattern

       33  */

       34 JNIEXPORT jfloat JNICALL

       35 Java_java_lang_Float_intBitsToFloat(JNIEnv *env, jclass unused, jint v)

       36 {

       37     union {

       38         int i;

       39         float f;

       40     } u;

       41     u.i = (long)v;

       42     return (jfloat)u.f;

       43 }

       44 

       45 /*

       46  * Find the bit pattern corresponding to a given float, NOT collapsing NaNs

       47  */

       48 JNIEXPORT jint JNICALL

       49 Java_java_lang_Float_floatToRawIntBits(JNIEnv *env, jclass unused, jfloat v)

       50 {

       51     union {

       52         int i;

       53         float f;

       54     } u;

       55     u.f = (float)v;

       56     return (jint)u.i;

       57 }