arm_float_cpu.c

This is a resource based on j2me embedded,if you dont understand,you can connection with me .

/*
 * @(#)arm_float_cpu.c	1.6 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program is free software; you can redistribute it and/or  
 * modify it under the terms of the GNU General Public License version  
 * 2 only, as published by the Free Software Foundation.   
 *   
 * This program is distributed in the hope that it will be useful, but  
 * WITHOUT ANY WARRANTY; without even the implied warranty of  
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
 * General Public License version 2 for more details (a copy is  
 * included at /legal/license.txt).   
 *   
 * You should have received a copy of the GNU General Public License  
 * version 2 along with this work; if not, write to the Free Software  
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
 * 02110-1301 USA   
 *   
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

#include "javavm/include/porting/endianness.h"
#include "javavm/include/porting/doubleword.h"

CVMJavaDouble
CVMlongBits2Double(CVMJavaLong val)
{
    union {
	unsigned int x[2];
	CVMJavaLong l;
	CVMJavaDouble d;
    } bits;
    unsigned int tmp;

    bits.l = val;
    tmp = bits.x[0];
    bits.x[0] = bits.x[1];
    bits.x[1] = tmp;

    return bits.d;
}

CVMJavaLong
CVMdouble2LongBits(CVMJavaDouble val)
{
    union {
	unsigned int x[2];
	CVMJavaLong l;
	CVMJavaDouble d;
    } bits;
    unsigned int tmp;

    bits.d = val;
    tmp = bits.x[0];
    bits.x[0] = bits.x[1];
    bits.x[1] = tmp;

    return bits.l;
}