/*========================================================================
//
//      double/portable-api/s_fabs.c
//
//      Part of the standard mathematical function library
//
//========================================================================
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// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
// Copyright (C) 2004 eCosCentric Limited                                   
//
// eCos is free software; you can redistribute it and/or modify it under    
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// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
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// As a special exception, if other files instantiate templates or use      
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// this file does not by itself cause the resulting work to be covered by   
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// General Public License v2.                                               
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//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     jlarmour
// Contributors:  
// Date:          2004-02-30
// Purpose:       
// Description:   Derived from newlib libm
//                http://sources.redhat.com/newlib
//                in turn based on SunSoft fdlibm.
//                See copyright/license information below.
// Usage:         #include <math.h>
//
//####DESCRIPTIONEND####
//======================================================================*/


/* @(#)s_fabs.c 5.1 93/09/24 */
/*
 * ====================================================
 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
 *
 * Developed at SunPro, a Sun Microsystems, Inc. business.
 * Permission to use, copy, modify, and distribute this
 * software is freely granted, provided that this notice 
 * is preserved.
 * ====================================================
 */

/*
FUNCTION
       <<fabs>>, <<fabsf>>---absolute value (magnitude)
INDEX
	fabs
INDEX
	fabsf

ANSI_SYNOPSIS
	#include <math.h>
       double fabs(double <[x]>);
       float fabsf(float <[x]>);

TRAD_SYNOPSIS
	#include <math.h>
       double fabs(<[x]>) 
       double <[x]>;

       float fabsf(<[x]>)
       float <[x]>;

DESCRIPTION
<<fabs>> and <<fabsf>> calculate 
@tex
$|x|$, 
@end tex
the absolute value (magnitude) of the argument <[x]>, by direct
manipulation of the bit representation of <[x]>.

RETURNS
The calculated value is returned.  No errors are detected.

PORTABILITY
<<fabs>> is ANSI.
<<fabsf>> is an extension.

*/

/*
 * fabs(x) returns the absolute value of x.
 */

#include "mathincl/fdlibm.h"

#ifndef _DOUBLE_IS_32BITS

#ifdef __STDC__
	double fabs(double x)
#else
	double fabs(x)
	double x;
#endif
{
	__uint32_t high;
	GET_HIGH_WORD(high,x);
	SET_HIGH_WORD(x,high&0x7fffffff);
        return x;
}

#endif /* _DOUBLE_IS_32BITS */

// EOF s_fabs.c
