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/*@@
@file Reduction.c
@date Thu Apr 3 11:54:53 1997
@author Thomas Radke, Paul Walker
@desc
Various MPI reduction operators.
@enddesc
@version $Id$
@@*/
#include <stdlib.h>
#include "local_reductions.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CCTDevelopment_LocalReduce_Reduction_c);
/********************************************************************
********************* Local Routine Prototypes *********************
********************************************************************/
static int copy_real_to_outtype (int num_elems,
CCTK_REAL inarray [/* num_elems */],
int outtype,
void *const outarray /* [num_elems] */);
/********************************************************************
********************* External Routines **********************
********************************************************************/
/*@@
@routine LocalReduce_Reduce
@author Thomas Radke, Yaakoub El Khamra
@date
@desc
Wrapper to reduce a list of arrays.
Just calls the appropriate reduction operator and does
the type conversion of the results.
@enddesc
@history
@endhistory
@var N_dims
@vdesc number of dimensions in the *reduction*
@vtype int
@vio in
@endvar
@var operator_handle
@vdesc operator handle specificies the type of reduction we will perform
@vtype int
@vio in
@endvar
@var param_table_handle
@vdesc handle to "parameter table", a key-value table
@vtype int
@vio in
@endvar
@var N_input_arrays
@vdesc number of input arrays
@vtype int
@vio in
@endvar
@var input_array_dims
@vdesc array of input array dimensions (common to all input arrays)
@vtype const CCTK_INT
@vio in
@endvar
@var input_array_type_codes
@vdesc array of CCTK_VARIABLE_* codes giving data types of input arrays
@vtype const CCTK_INT
@vio in
@endvar
@var input_arrays
@vdesc array of pointers to input arrays
@vtype const void *const
@vio in
@endvar
@var M_output_numbers
@vdesc
@vtype int
@vio in
@endvar
@var output_number_type_codes
@vdesc array of CCTK_VARIABLE_* codes giving data types of output numbers
@vtype const CCTK_INT
@vio in
@endvar
@var output_numbers
@vdesc array[M_output_numbers] of pointers to output numbers[M_reduce_numbers]
@vtype void *const
@vio in
@endvar
@@*/
int LocalReduce_Reduce (int N_dims, int operator_handle,
int param_table_handle, int N_input_arrays,
const CCTK_INT input_array_dims[],
const CCTK_INT input_array_type_codes[],
const void *const input_arrays[],
int M_output_numbers,
const CCTK_INT output_number_type_codes[],
void * const output_numbers[],
reduction_fn_t reduction_fn)
{
int retval;
/* do the reduction on the input arrays */
retval = reduction_fn (N_dims, operator_handle,
param_table_handle, N_input_arrays,
input_array_dims, input_array_type_codes,
input_arrays, M_output_numbers,
output_number_type_codes, output_numbers);
return (retval);
}
/*@@
@routine copy_real_to_outtype
@author Thomas Radke
@date 19 Aug 1999
@desc
Does the type conversion from CCTK_REAL into the requested
datatype.
@enddesc
@calls CCTK_VarTypeSize
CCTK_GroupTypeFromVarI
ReductionGA
ReductionScalar
copy_real_to_outtype
@var num_elems
@vdesc number of elements to convert
@vtype int
@vio in
@endvar
@var inarray
@vdesc input array with results of reductions
@vtype CCTK_REAL *
@vio in
@endvar
@var outtype
@vdesc requested output datatype
@vtype int
@vio in
@endvar
@var outarray
@vdesc pointer to output buffer to store the converted results
@vtype void *
@vio out
@endvar
@returntype int
@returndesc
0 for success, or<BR>
-1 if conversion into target datatype is not supported.
@endreturndesc
@@*/
static int copy_real_to_outtype (int num_elems,
CCTK_REAL inarray[/* num_elems */],
int outtype,
void *outarray /* [num_elems] */)
{
int i, retval;
retval = 0;
if (outtype == CCTK_VARIABLE_CHAR)
{
CCTK_BYTE *_outarray = (CCTK_CHAR *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_BYTE) inarray[i];
}
}
else if (outtype == CCTK_VARIABLE_INT)
{
CCTK_INT *_outarray = (CCTK_INT *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_INT) inarray[i];
}
}
#ifdef CCTK_INT1
else if (outtype == CCTK_VARIABLE_INT1)
{
CCTK_INT1 *_outarray = (CCTK_INT1 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_INT1) inarray[i];
}
}
#endif
#ifdef CCTK_INT2
else if (outtype == CCTK_VARIABLE_INT2)
{
CCTK_INT2 *_outarray = (CCTK_INT2 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_INT2) inarray[i];
}
}
#endif
#ifdef CCTK_INT4
else if (outtype == CCTK_VARIABLE_INT4)
{
CCTK_INT4 *_outarray = (CCTK_INT4 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_INT4) inarray[i];
}
}
#endif
#ifdef CCTK_INT8
else if (outtype == CCTK_VARIABLE_INT8)
{
CCTK_INT8 *_outarray = (CCTK_INT8 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_INT8) inarray[i];
}
}
#endif
else if (outtype == CCTK_VARIABLE_REAL)
{
CCTK_REAL *_outarray = (CCTK_REAL *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_REAL) inarray[i];
}
}
#ifdef CCTK_REAL4
else if (outtype == CCTK_VARIABLE_REAL4)
{
CCTK_REAL4 *_outarray = (CCTK_REAL4 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_REAL4) inarray[i];
}
}
#endif
#ifdef CCTK_REAL8
else if (outtype == CCTK_VARIABLE_REAL8)
{
CCTK_REAL8 *_outarray = (CCTK_REAL8 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_REAL8) inarray[i];
}
}
#endif
#ifdef CCTK_REAL16
else if (outtype == CCTK_VARIABLE_REAL16)
{
CCTK_REAL16 *_outarray = (CCTK_REAL16 *) outarray;
for (i = 0; i < num_elems; i++)
{
_outarray[i] = (CCTK_REAL16) inarray[i];
}
}
#endif
else
{
CCTK_WARN (1, "copy_real_to_outtype: Unsupported output type");
retval = -1;
}
return (retval);
}
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