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/*@@
@file DatatypeConversion.c
@date Thursday Nov 23 2000
@author Thomas Radke
@desc
Predefined datatype conversion routines for hyperslab extraction.
@enddesc
@version $Id$
@@*/
#include <stddef.h>
#include "cctk.h"
#include "PUGHSlab.h"
#include "PUGHSlabi.h"
/* the rcs ID and its dummy function to use it */
static const char *rcsid="$Id$";
CCTK_FILEVERSION(CactusPUGH_PUGHSlab_DatatypeConversion_c)
/* macro to generate a predefined conversion function
along with its prototype */
#define CONVERSION_FUNCTION(source_type, dest_type, conversion) \
static CCTK_INT Convert##source_type##to##dest_type (CCTK_INT nelems, \
CCTK_INT src_stride, \
CCTK_INT dst_stride, \
CCTK_INT src_type, \
CCTK_INT dst_type, \
CCTK_POINTER_TO_CONST src,\
CCTK_POINTER dst); \
\
static CCTK_INT Convert##source_type##to##dest_type (CCTK_INT nelems, \
CCTK_INT src_stride, \
CCTK_INT dst_stride, \
CCTK_INT src_type, \
CCTK_INT dst_type, \
CCTK_POINTER_TO_CONST src,\
CCTK_POINTER dst) \
{ \
CCTK_INT _i; \
CCTK_##dest_type *_dst = dst; \
const CCTK_##source_type *_src = src; \
\
\
(void) (src_type + 0); \
(void) (dst_type + 0); \
for (_i = 0; _i < nelems; _i++, _src += src_stride, _dst += dst_stride) \
{ \
conversion (*_src, *_dst, dest_type); \
} \
\
return (nelems); \
}
/* the conversion of scalar datatypes (integers and reals) */
#ifdef CONVERT
#undef CONVERT
#endif
#define CONVERT(src, dst, dst_type) (dst) = (CCTK_##dst_type) (src)
/* predefined conversion functions for integers */
#if defined(CCTK_INT1) && defined(CCTK_INT2)
CONVERSION_FUNCTION (INT2, INT1, CONVERT)
#endif
#if defined(CCTK_INT1) && defined(CCTK_INT4)
CONVERSION_FUNCTION (INT4, INT1, CONVERT)
#endif
#if defined(CCTK_INT2) && defined(CCTK_INT4)
CONVERSION_FUNCTION (INT4, INT2, CONVERT)
#endif
#if defined(CCTK_INT1) && defined(CCTK_INT8)
CONVERSION_FUNCTION (INT8, INT1, CONVERT)
#endif
#if defined(CCTK_INT2) && defined(CCTK_INT8)
CONVERSION_FUNCTION (INT8, INT2, CONVERT)
#endif
#if defined(CCTK_INT4) && defined(CCTK_INT8)
CONVERSION_FUNCTION (INT8, INT4, CONVERT)
#endif
/* predefined conversion functions for reals */
#if defined(CCTK_REAL4) && defined(CCTK_REAL8)
CONVERSION_FUNCTION (REAL8, REAL4, CONVERT)
#endif
#if defined(CCTK_REAL4) && defined(CCTK_REAL16)
CONVERSION_FUNCTION (REAL16, REAL4, CONVERT)
#endif
#if defined(CCTK_REAL8) && defined(CCTK_REAL16)
CONVERSION_FUNCTION (REAL16, REAL8, CONVERT)
#endif
/* predefined conversion functions for complex */
#if defined(CCTK_REAL4) && defined(CCTK_REAL8)
CONVERSION_FUNCTION (COMPLEX16, COMPLEX8, CONVERT)
#endif
#if defined(CCTK_REAL4) && defined(CCTK_REAL16)
CONVERSION_FUNCTION (COMPLEX32, COMPLEX16, CONVERT)
#endif
#if defined(CCTK_REAL8) && defined(CCTK_REAL16)
CONVERSION_FUNCTION (COMPLEX32, COMPLEX8, CONVERT)
#endif
/* prototypes of routines defined in this source file */
static int PUGHSlabi_PrecisionVarType (int type);
/*@@
@routine PUGHSlabi_GetDatatypeConversionFn
@date Fri 23 Nov 2000
@author Thomas Radke
@desc
Finds a predefined datatype conversion function.
@enddesc
@var src_type
@vdesc CCTK datatype of the source
@vtype int
@vio in
@endvar
@var dst_type
@vdesc CCTK datatype of the destination (hyperslab datatype)
@vtype int
@vio in
@endvar
@returntype PUGHSlab_conversion_fn
@returndesc
the appropriate function pointer
or NULL if no predefined conversion function was found
@endreturndesc
@@*/
t_hslabConversionFn PUGHSlabi_GetDatatypeConversionFn (int src_type,
int dst_type)
{
t_hslabConversionFn retval;
/* get the precision datatype for generic CCTK_TYPE variable types */
src_type = PUGHSlabi_PrecisionVarType (src_type);
dst_type = PUGHSlabi_PrecisionVarType (dst_type);
/* get the appropriate conversion routine */
if (0)
{
/* this is just because of the following #ifdef'ed else branches */
}
#if defined(CCTK_INT1) && defined(CCTK_INT2)
else if (src_type == CCTK_VARIABLE_INT2 && dst_type == CCTK_VARIABLE_INT1)
{
retval = ConvertINT2toINT1;
}
#endif
#if defined(CCTK_INT1) && defined(CCTK_INT4)
else if (src_type == CCTK_VARIABLE_INT4 && dst_type == CCTK_VARIABLE_INT1)
{
retval = ConvertINT4toINT1;
}
#endif
#if defined(CCTK_INT2) && defined(CCTK_INT4)
else if (src_type == CCTK_VARIABLE_INT4 && dst_type == CCTK_VARIABLE_INT2)
{
retval = ConvertINT4toINT2;
}
#endif
#if defined(CCTK_INT1) && defined(CCTK_INT8)
else if (src_type == CCTK_VARIABLE_INT8 && dst_type == CCTK_VARIABLE_INT1)
{
retval = ConvertINT8toINT1;
}
#endif
#if defined(CCTK_INT2) && defined(CCTK_INT8)
else if (src_type == CCTK_VARIABLE_INT8 && dst_type == CCTK_VARIABLE_INT2)
{
retval = ConvertINT8toINT2;
}
#endif
#if defined(CCTK_INT4) && defined(CCTK_INT8)
else if (src_type == CCTK_VARIABLE_INT8 && dst_type == CCTK_VARIABLE_INT4)
{
retval = ConvertINT8toINT4;
}
#endif
#if defined(CCTK_REAL4) && defined(CCTK_REAL8)
else if (src_type == CCTK_VARIABLE_REAL8 && dst_type == CCTK_VARIABLE_REAL4)
{
retval = ConvertREAL8toREAL4;
}
#endif
#if defined(CCTK_REAL4) && defined(CCTK_REAL16)
else if (src_type == CCTK_VARIABLE_REAL16 && dst_type == CCTK_VARIABLE_REAL4)
{
retval = ConvertREAL16toREAL4;
}
#endif
#if defined(CCTK_REAL8) && defined(CCTK_REAL16)
else if (src_type == CCTK_VARIABLE_REAL16 && dst_type == CCTK_VARIABLE_REAL8)
{
retval = ConvertREAL16toREAL8;
}
#endif
#if defined(CCTK_REAL4) && defined(CCTK_REAL8)
else if (src_type == CCTK_VARIABLE_COMPLEX16 && dst_type == CCTK_VARIABLE_COMPLEX8)
{
retval = ConvertCOMPLEX16toCOMPLEX8;
}
#endif
#if defined(CCTK_REAL8) && defined(CCTK_REAL16)
else if (src_type == CCTK_VARIABLE_COMPLEX32 && dst_type == CCTK_VARIABLE_COMPLEX8)
{
retval = ConvertCOMPLEX32toCOMPLEX8;
}
#endif
#if defined(CCTK_REAL8) && defined(CCTK_REAL16)
else if (src_type == CCTK_VARIABLE_COMPLEX32 && dst_type == CCTK_VARIABLE_COMPLEX16)
{
retval = ConvertCOMPLEX32toCOMPLEX16;
}
#endif
else
{
retval = NULL;
}
return (retval);
}
/**************************************************************************/
/* local functions */
/**************************************************************************/
/* get the precision datatype for generic CCTK_TYPE variable types */
static int PUGHSlabi_PrecisionVarType (int type)
{
if (type == CCTK_VARIABLE_INT)
{
#ifdef CCTK_INTEGER_PRECISION_8
type = CCTK_VARIABLE_INT8;
#elif CCTK_INTEGER_PRECISION_4
type = CCTK_VARIABLE_INT4;
#elif CCTK_INTEGER_PRECISION_2
type = CCTK_VARIABLE_INT2;
#elif CCTK_INTEGER_PRECISION_1
type = CCTK_VARIABLE_INT1;
#endif
}
else if (type == CCTK_VARIABLE_REAL)
{
#ifdef CCTK_REAL_PRECISION_16
type = CCTK_VARIABLE_REAL16;
#elif CCTK_REAL_PRECISION_8
type = CCTK_VARIABLE_REAL8;
#elif CCTK_REAL_PRECISION_4
type = CCTK_VARIABLE_REAL4;
#endif
}
else if (type == CCTK_VARIABLE_COMPLEX)
{
#ifdef CCTK_REAL_PRECISION_16
type = CCTK_VARIABLE_COMPLEX32;
#elif CCTK_REAL_PRECISION_8
type = CCTK_VARIABLE_COMPLEX16;
#elif CCTK_REAL_PRECISION_4
type = CCTK_VARIABLE_COMPLEX8;
#endif
}
return (type);
}
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