epoc32/include/libc/machine/ieeefp.h
author William Roberts <williamr@symbian.org>
Tue, 16 Mar 2010 16:12:26 +0000
branchSymbian2
changeset 2 2fe1408b6811
parent 0 061f57f2323e
child 4 837f303aceeb
permissions -rw-r--r--
Final list of Symbian^2 public API header files
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/*
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
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* which accompanies this distribution, and is available
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* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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/**
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 @file
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 @publishedAll
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 @released
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*/
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#ifndef __IEEE_BIG_ENDIAN
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#ifndef __IEEE_LITTLE_ENDIAN
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/**
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EPOC safety net - Check various EPOC defines to ensure that
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we get an appropriate endianness choice
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*/
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#if (defined(__WINS__) || defined(__MX86__)) && !defined(__i386__)
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#define __i386__
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#elif defined(__MARM__) && !defined(__arm__)
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#define __arm__
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#endif
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#ifdef __arm__
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	#ifdef __EABI__
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	/**
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	EABI supports the VFP specification, where the ordering of the words
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	matches the endianness.
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	*/
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	#define __IEEE_LITTLE_ENDIAN
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#else
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	/** 
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	Pre-VFP, ARM used the big endian ordering of the words, regardless of
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	the endianess. 
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	*/
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	#define __IEEE_BIG_ENDIAN
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	#endif
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#endif
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#ifdef __hppa__
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#define __IEEE_BIG_ENDIAN
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#endif
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#ifdef __sparc__
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#define __IEEE_BIG_ENDIAN
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#endif
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#if defined(__m68k__) || defined(__mc68000__)
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#define __IEEE_BIG_ENDIAN
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#endif
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#if defined (__H8300__) || defined (__H8300H__)
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#define __IEEE_BIG_ENDIAN
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#define __SMALL_BITFIELDS
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#define _DOUBLE_IS_32BITS
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#endif
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#ifdef __H8500__
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#define __IEEE_BIG_ENDIAN
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#define __SMALL_BITFIELDS
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#define _DOUBLE_IS_32BITS
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#endif
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#ifdef __sh__
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#ifdef __LITTLE_ENDIAN__
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#define __IEEE_LITTLE_ENDIAN
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#else
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#define __IEEE_BIG_ENDIAN
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#endif
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#ifdef __SH3E__
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#define _DOUBLE_IS_32BITS
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#endif
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#endif
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#ifdef _AM29K
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#define __IEEE_BIG_ENDIAN
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#endif
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/* Added "&& !defined(__arm__)" to avoid the duplicate definition of the
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   __ieee_[float|double]_shape_type structures in stdlib\LINC\IEEEFP.h 
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   conditionally compiled using the __IEEE_LITTLE_ENDIAN && __IEEE_BIG_ENDIAN 
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   in GCCXML builds. This is a work around as we can't get gccxml to stop 
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   defining __i386__ as it's defined in the "<built-in>" header file of the 
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   compiler.
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*/
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#if defined(__i386__) && !defined(__arm__)
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#define __IEEE_LITTLE_ENDIAN
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#endif
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#ifdef __i960__
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#define __IEEE_LITTLE_ENDIAN
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#endif
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#ifdef __MIPSEL__
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#define __IEEE_LITTLE_ENDIAN
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#endif
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#ifdef __MIPSEB__
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#define __IEEE_BIG_ENDIAN
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#endif
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/**
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necv70 was __IEEE_LITTLE_ENDIAN. 
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*/
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#ifdef __W65__
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#define __IEEE_LITTLE_ENDIAN
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#define __SMALL_BITFIELDS
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#define _DOUBLE_IS_32BITS
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#endif
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#if defined(__Z8001__) || defined(__Z8002__)
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#define __IEEE_BIG_ENDIAN
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#endif
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#ifdef __m88k__
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#define __IEEE_BIG_ENDIAN
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#endif
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#ifdef __v800
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#define __IEEE_LITTLE_ENDIAN
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#endif
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#ifdef __PPC__
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#ifdef _BIG_ENDIAN
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#define __IEEE_BIG_ENDIAN
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#else
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#define __IEEE_LITTLE_ENDIAN
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#endif
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#endif
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#ifdef __mcore__
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#define __IEEE_LITTLE_ENDIAN	/* always little-endian M*Core for EPOC */
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#endif
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#ifndef __IEEE_BIG_ENDIAN
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#ifndef __IEEE_LITTLE_ENDIAN
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#error Endianess not declared!!
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#endif /* not __IEEE_LITTLE_ENDIAN */
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#endif /* not __IEEE_BIG_ENDIAN */
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#endif /* not __IEEE_LITTLE_ENDIAN */
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#endif /* not __IEEE_BIG_ENDIAN */