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author | ravi9 <ravi9@7daa882c-dc44-4453-834e-278d26b18e6a> | 2004-06-10 15:08:39 +0000 |
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committer | ravi9 <ravi9@7daa882c-dc44-4453-834e-278d26b18e6a> | 2004-06-10 15:08:39 +0000 |
commit | 75e87ee255659cd3a4cf41f7f06b69d5d627bc69 (patch) | |
tree | c98a5b407c355a5c7b3c75c4fb2f31dc64b6711e /src/ReductionAvg.c | |
parent | 79c786d55900dec0bc910bbb27d99a2ddcfca0bb (diff) |
This commit was generated by cvs2svn to compensate for changes in r4, which
included commits to RCS files with non-trunk default branches.
git-svn-id: http://svn.cactuscode.org/arrangements/CactusBase/LocalReduce/trunk@5 7daa882c-dc44-4453-834e-278d26b18e6a
Diffstat (limited to 'src/ReductionAvg.c')
-rw-r--r-- | src/ReductionAvg.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/ReductionAvg.c b/src/ReductionAvg.c new file mode 100644 index 0000000..4569307 --- /dev/null +++ b/src/ReductionAvg.c @@ -0,0 +1,256 @@ + /*@@ + @file ReductionAvg.c + @date Thu May 27 14:14:53 2004 + @author Ravi Paruchuri + @desc + Defines the reduction operator to get the average + of an arbitrary array. + @enddesc + @version $Id$ + @@*/ + +#include <stdlib.h> +#include <string.h> + + +static const char *rcsid = "$Id$"; + +CCTK_FILEVERSION(CactusBase_LocalReduce_ReductionAvg_c) + +/* local function prototypes */ +static int ReductionAvg (int num_dims, + const int from[/* dim */], + const int to[/* dim */], + int iterator[/* dim */], + const int points_per_dim[/* dim */], + int num_points, + int have_local_points, + int num_inarrays, + const int intypes[/* num_inarrays */], + const void *const inarrays[/* num_inarrays */], + int num_outvals, + void *outvals[/*num_inarrays*num_outvals*/]); + + +/*@@ + @routine LocalReduce_ReductionAvgArrays + @author Ravi Paruchuri + @date May 27 2004 + @desc + Registered reduction routine for computing the averages + of a set of arrays. + The arrays are described by their dimensions and variable type. + For the number of output values only 1 is accepted. + Type casting of the result is provided by specifying the + requested output datatype. The intermediate reduction value + is always computed as a CCTK_REAL value internally. + @enddesc + @history + @endhistory + @var GH + @vdesc Pointer to CCTK grid hierarchy + @vtype const cGH * + @vio in + @endvar + @var proc + @vdesc processor that should receive the result of operation + (negative value means all processors receive the result) + @vtype int + @vio in + @endvar + @var nDims + @vdesc number of dimensions of input arrays + @vtype int + @vio in + @endvar + @var dims + @vdesc dimensions of input arrays + @vtype const int * + @vio in + @endvar + @var nArrays + @vdesc number of input arrays + @vtype int + @vio in + @endvar + @var inarrays + @vdesc field of input arrays + @vtype const void *const + @vio in + @endvar + @var inType + @vdesc (common) variable type of input arrays + @vtype int + @vio in + @endvar + @var num_outvals + @vdesc number of values per output array + @vtype int + @vio in + @endvar + @var outvals + @vdesc pointer to buffer holding the output values + @vtype void * + @vio in + @endvar + @var outtype + @vdesc (common) variable type of output arrays + @vtype int + @vio in + @endvar +@@*/ +int LocalReduce_ReductionAvgArrays (const cGH *GH, + int proc, + int num_dims, + const int dims[/* num_dims */], + int num_inarrays, + const void *const inarrays[/* num_inarrays */], + int intype, + int num_outvals, + void *outvals[], /* [num_outvals] */, + int outtype) +{ + return (LocalReduce_ReductionArrays (num_dims, dims, + intype, num_inarrays, inarrays, + outtype, num_outvals, outvals, + ReductionAvg)); +} + + +/*****************************************************************************/ +/* local functions */ +/*****************************************************************************/ +/*@@ + @routine ReductionAvg + @date Aug 19 1999 + @author Thomas Radke + @desc Returns the average of a distributed array with + 'num_points' elements. Global reduction is done element-wise + (num_outvals == 1) or on the results of the local reductions. + @enddesc +@@*/ +static int ReductionAvg (int num_dims, + const int from[/* dim */], + const int to[/* dim */], + int iterator[/* dim */], + const int points_per_dim[/* dim */], + int num_points, + int have_local_points, + int num_inarrays, + const int intypes[/* num_inarrays */], + const void *const inarrays[/* num_inarrays */], + int num_outvals, + CCTK_REAL outvals[/*num_inarrays*num_outvals*/]) +{ + int i, total_outvals; + const char *vtypename; + const pGH *pughGH; + + + /* avoid compiler warnings about unused parameters */ + (void) (num_points + 0); + +/* macros to complete the ITERATE_ARRAY macro */ +#define INITIAL_REDUCTION_VALUE(array) 0 +#define REDUCTION_OPERATION(avg, scalar) avg += scalar + + for (i = total_outvals = 0; i < num_inarrays; i++) + { + switch (intypes[i]) + { + case CCTK_VARIABLE_CHAR: + ITERATE_ARRAY (CCTK_BYTE, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_BYTE, outvals, num_outvals, total_outvals); + break; + + case CCTK_VARIABLE_INT: + ITERATE_ARRAY (CCTK_INT, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_INT, outvals, num_outvals, total_outvals); + break; + +#ifdef CCTK_INT1 + case CCTK_VARIABLE_INT1: + ITERATE_ARRAY (CCTK_INT1, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_INT1, outvals, num_outvals, total_outvals); + break; +#endif + +#ifdef CCTK_INT2 + case CCTK_VARIABLE_INT2: + ITERATE_ARRAY (CCTK_INT2, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_INT2, outvals, num_outvals, total_outvals); + break; +#endif + +#ifdef CCTK_INT4 + case CCTK_VARIABLE_INT4: + ITERATE_ARRAY (CCTK_INT4, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_INT4, outvals, num_outvals, total_outvals); + break; +#endif + +#ifdef CCTK_INT8 + case CCTK_VARIABLE_INT8: + ITERATE_ARRAY (CCTK_INT8, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_INT8, outvals, num_outvals, total_outvals); + break; +#endif + + case CCTK_VARIABLE_REAL: + ITERATE_ARRAY (CCTK_REAL, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_REAL, outvals, num_outvals, total_outvals); + break; + +#ifdef CCTK_REAL4 + case CCTK_VARIABLE_REAL4: + ITERATE_ARRAY (CCTK_REAL4, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_REAL4, outvals, num_outvals, total_outvals); + break; +#endif + +#ifdef CCTK_REAL8 + case CCTK_VARIABLE_REAL8: + ITERATE_ARRAY (CCTK_REAL8, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_REAL8, outvals, num_outvals, total_outvals); + break; +#endif + +#ifdef CCTK_REAL16 + case CCTK_VARIABLE_REAL16: + ITERATE_ARRAY (CCTK_REAL16, num_dims, inarrays[i], + from, to, iterator, points_per_dim, + CCTK_REAL16, outvals, num_outvals, total_outvals); + break; +#endif + + default: + vtypename = CCTK_VarTypeName (intypes[i]); + if (vtypename && strncmp (vtypename, "CCTK_VARIABLE_COMPLEX", 21) == 0) + { + CCTK_WARN (1, "LocalReduce_ReductionAvg: Don't know how to compute " + "the average of complex variables !!!"); + } + else + { + CCTK_WARN (1, "LocalReduce_ReductionAvg: Unknown variable type"); + } + return (-1); + } + } + + for (i = 0; i < total_outvals; i++) + { + outvals[i] /= num_points; + } + + return (0); +} |