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63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/*
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Copyright (C) 2011 Statoil ASA, Norway.
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The file 'ecl_endian_flip.h' is part of ERT - Ensemble based Reservoir Tool.
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ERT is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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ERT is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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for more details.
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*/
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#ifndef __ECL_ENDIAN_FLIP_H__
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#define __ECL_ENDIAN_FLIP_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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/**
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This header file checks if the ECLIPSE endianness and the hardware
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endianness are equal, and defines the macro ECL_ENDIAN_FLIP
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accordingly.
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All the ecl_xxx functions will use the ECL_ENDIAN_FLIP macro to
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determine whether the endian flip should be performed. When opening
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a fortio instance explicitly you can use the ECL_ENDIAN_FLIP macro
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to get the endianness correct (for ECLIPSE usage that is).
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*/
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#define ECLIPSE_BYTE_ORDER __BIG_ENDIAN // Alternatively: __LITTLE_ENDIAN
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#define WIN32 1
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#ifdef BYTE_ORDER
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#if BYTE_ORDER == ECLIPSE_BYTE_ORDER
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#define ECL_ENDIAN_FLIP false
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#else
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#define ECL_ENDIAN_FLIP true
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#endif
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#else
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#ifdef WIN32
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#define ECL_ENDIAN_FLIP true // Unconditional byte flip on Windows.
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#else
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#error: The macro BYTE_ORDER is not defined?
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#endif
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#endif
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#undef ECLIPSE_BYTE_ORDER
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#ifdef __cplusplus
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}
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#endif
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#endif
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