/usr/include/casacore/casa/OS/VAXConversion.h is in casacore-dev 2.2.0-2.
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//# Copyright (C) 1996,1997,1999,2001
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library 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 Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
#ifndef CASA_VAXCONVERSION_H
#define CASA_VAXCONVERSION_H
//# Includes
#include <casacore/casa/aips.h>
#include <assert.h>
#include <casacore/casa/OS/LittleEndianConversion.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
// Define the canonical sizes of the built-in data types.
// These are the same for all machine architectures.
#define SIZE_VAX_CHAR 1
#define SIZE_VAX_UCHAR 1
#define SIZE_VAX_SHORT 2
#define SIZE_VAX_USHORT 2
#define SIZE_VAX_INT 4
#define SIZE_VAX_UINT 4
#define SIZE_VAX_INT64 4
#define SIZE_VAX_UINT64 4
#define SIZE_VAX_FLOAT 4
#define SIZE_VAX_DOUBLE 8
// <summary>
// A class with static functions to convert VAX format
// </summary>
// <use visibility=export>
// <reviewed reviewer="Friso Olnon" date="1996/11/06" tests="tVAXConversion" demos="">
// </reviewed>
// <synopsis>
// This class contains static toLocal functions to convert data from VAX
// format to local format and vice-versa. It only handles VAX D-float format.
// Another class should be implemented to handle VAX G-float format.
// <p>
// The functions work well on big-endian as well as little-endian machines.
// </synopsis>
// <motivation>
// Archived WSRT data can be stored in the old VAX format
// (little-endian and VAX D-float floating point format).
// Conversion functions are needed to read these data.
// </motivation>
// <todo asof="$DATE$">
// <li> Support data type long double.
// </todo>
class VAXConversion
{
public:
// Convert one value from VAX format to local format.
// The from and to buffer should not overlap.
// <group>
static void toLocal (char& to, const void* from);
static void toLocal (unsigned char& to, const void* from);
static void toLocal (short& to, const void* from);
static void toLocal (unsigned short& to, const void* from);
static void toLocal (int& to, const void* from);
static void toLocal (unsigned int& to, const void* from);
static void toLocal (Int64& to, const void* from);
static void toLocal (uInt64& to, const void* from);
static void toLocal (float& to, const void* from);
static void toLocal (double& to, const void* from);
// </group>
// Convert nr values from VAX format to local format.
// The from and to buffer should not overlap.
// <group>
static void toLocal (char* to, const void* from,
size_t nr);
static void toLocal (unsigned char* to, const void* from,
size_t nr);
static void toLocal (short* to, const void* from,
size_t nr);
static void toLocal (unsigned short* to, const void* from,
size_t nr);
static void toLocal (int* to, const void* from,
size_t nr);
static void toLocal (unsigned int* to, const void* from,
size_t nr);
static void toLocal (Int64* to, const void* from,
size_t nr);
static void toLocal (uInt64* to, const void* from,
size_t nr);
static void toLocal (float* to, const void* from,
size_t nr);
static void toLocal (double* to, const void* from,
size_t nr);
// </group>
// Convert one value from local format to VAX format.
// The from and to buffer should not overlap.
// <group>
static void fromLocal (void* to, char from);
static void fromLocal (void* to, unsigned char from);
static void fromLocal (void* to, short from);
static void fromLocal (void* to, unsigned short from);
static void fromLocal (void* to, int from);
static void fromLocal (void* to, unsigned int from);
static void fromLocal (void* to, Int64 from);
static void fromLocal (void* to, uInt64 from);
static void fromLocal (void* to, float from);
static void fromLocal (void* to, double from);
// </group>
// Convert nr values from local format to VAX format.
// The from and to buffer should not overlap.
// <group>
static void fromLocal (void* to, const char* from,
size_t nr);
static void fromLocal (void* to, const unsigned char* from,
size_t nr);
static void fromLocal (void* to, const short* from,
size_t nr);
static void fromLocal (void* to, const unsigned short* from,
size_t nr);
static void fromLocal (void* to, const int* from,
size_t nr);
static void fromLocal (void* to, const unsigned int* from,
size_t nr);
static void fromLocal (void* to, const Int64* from,
size_t nr);
static void fromLocal (void* to, const uInt64* from,
size_t nr);
static void fromLocal (void* to, const float* from,
size_t nr);
static void fromLocal (void* to, const double* from,
size_t nr);
// </group>
// Move a float value (by swapping bytes correctly).
static void moveFloat (void* to, const void* from);
private:
// This class should not be constructed
// (so declare the constructor private).
VAXConversion();
};
inline void VAXConversion::toLocal (char& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (unsigned char& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (short& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (unsigned short& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (int& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (unsigned int& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (Int64& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (uInt64& to, const void* from)
{
LittleEndianConversion::toLocal (to, from);
}
inline void VAXConversion::toLocal (float& to, const void* from)
{
toLocal (&to, from, 1);
}
inline void VAXConversion::toLocal (double& to, const void* from)
{
toLocal (&to, from, 1);
}
inline void VAXConversion::toLocal (char* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (unsigned char* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (short* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (unsigned short* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (int* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (unsigned int* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (Int64* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::toLocal (uInt64* to, const void* from,
size_t nr)
{
LittleEndianConversion::toLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, char from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, unsigned char from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, short from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, unsigned short from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, int from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, unsigned int from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, Int64 from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, uInt64 from)
{
LittleEndianConversion::fromLocal (to, from);
}
inline void VAXConversion::fromLocal (void* to, float from)
{
fromLocal (to, &from, 1);
}
inline void VAXConversion::fromLocal (void* to, double from)
{
fromLocal (to, &from, 1);
}
inline void VAXConversion::fromLocal (void* to, const char* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const unsigned char* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const short* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const unsigned short* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const int* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const unsigned int* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const Int64* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::fromLocal (void* to, const uInt64* from,
size_t nr)
{
LittleEndianConversion::fromLocal (to, from, nr);
}
inline void VAXConversion::moveFloat (void* to, const void* from)
{
#if defined(AIPS_LITTLE_ENDIAN)
((char*)to)[0] = ((const char*)from)[2];
((char*)to)[1] = ((const char*)from)[3];
((char*)to)[2] = ((const char*)from)[0];
((char*)to)[3] = ((const char*)from)[1];
#else
((char*)to)[0] = ((const char*)from)[1];
((char*)to)[1] = ((const char*)from)[0];
((char*)to)[2] = ((const char*)from)[3];
((char*)to)[3] = ((const char*)from)[2];
#endif
}
} //# NAMESPACE CASACORE - END
#endif
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