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//------------------------------------------------------------------------------
// GB_mex_op: apply a built-in GraphBLAS operator to built-in arrays
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Usage:
// Z = GB_mex_op (op, X, Y)
// Z = GB_mex_op (op, X)
// Apply a built-in GraphBLAS operator or a user-defined Complex operator to
// one or two arrays X and Y of any built-in logical or numeric type. X and Y
// are first typecasted into the x and y operand types of the op. The output Z
// has the same type as the z type of the op.
#include "GB_mex.h"
#define USAGE "Z = GB_mex_op (opname, X, Y, cover)"
#define FREE_ALL \
{ \
GB_mx_put_global (do_cover) ; \
}
void mexFunction
(
int nargout,
mxArray *pargout [ ],
int nargin,
const mxArray *pargin [ ]
)
{
GB_void *X = NULL, *Y = NULL, *Z = NULL ;
GrB_Type X_type = NULL, Y_type = NULL ;
int64_t nrows = 0, ncols = 0, nx = 0, ny = 0, nrows2 = 0, ncols2 = 0 ;
size_t Y_size = 1 ;
bool do_cover = (nargin == 4) ;
bool malloc_debug = GB_mx_get_global (do_cover) ;
// if Y is char and cover present, treat as if nargin == 2
if (do_cover)
{
if (mxIsChar (pargin [2]))
{
nargin = 2 ;
}
}
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
if (nargout > 1 || nargin < 2 || nargin > 4)
{
mexErrMsgTxt ("Usage: " USAGE) ;
}
//--------------------------------------------------------------------------
// get op; default type is the same type as X
//--------------------------------------------------------------------------
GrB_UnaryOp op1 = NULL ;
GrB_BinaryOp op2 = NULL ;
GrB_Type op_ztype = NULL, op_xtype, op_ytype ;
size_t op_zsize, op_xsize, op_ysize ;
GrB_Type xtype = GB_mx_Type (pargin [1]) ;
// check for complex case
bool XisComplex = mxIsComplex (pargin [1]) ;
bool YisComplex = (nargin > 2) ? mxIsComplex (pargin [2]) : false ;
bool user_complex = (Complex != GxB_FC64) && (XisComplex || YisComplex) ;
if (nargin > 2)
{
// get a binary op
if (!GB_mx_mxArray_to_BinaryOp (&op2, pargin [0], "GB_mex_op",
xtype, user_complex) || op2 == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("binary op missing") ;
}
op_ztype = op2->ztype ; op_zsize = op_ztype->size ;
op_xtype = op2->xtype ; op_xsize = op_xtype->size ;
op_ytype = op2->ytype ; op_ysize = op_ytype->size ;
ASSERT_BINARYOP_OK (op2, "binary op", GB0) ;
if (GB_OP_IS_POSITIONAL (op2))
{
FREE_ALL ;
mexErrMsgTxt ("binary positional op not supported") ;
}
}
else
{
// get a unary op
if (!GB_mx_mxArray_to_UnaryOp (&op1, pargin [0], "GB_mex_op",
xtype, user_complex) || op1 == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("unary op missing") ;
}
op_ztype = op1->ztype ; op_zsize = op_ztype->size ;
op_xtype = op1->xtype ; op_xsize = op_xtype->size ;
op_ytype = NULL ; op_ysize = 1 ;
ASSERT_UNARYOP_OK (op1, "unary op", GB0) ;
if (GB_OP_IS_POSITIONAL (op1))
{
FREE_ALL ;
mexErrMsgTxt ("unary positional op not supported") ;
}
}
ASSERT_TYPE_OK (op_ztype, "Z type", GB0) ;
//--------------------------------------------------------------------------
// get X
//--------------------------------------------------------------------------
GB_mx_mxArray_to_array (pargin [1], &X, &nrows, &ncols, &X_type) ;
nx = nrows * ncols ;
if (X_type == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("X must be numeric") ;
}
ASSERT_TYPE_OK (X_type, "X type", GB0) ;
size_t X_size = X_type->size ;
if (!GB_Type_compatible (op_xtype, X_type))
{
FREE_ALL ;
mexErrMsgTxt ("op xtype not compatible with X") ;
}
//--------------------------------------------------------------------------
// get Y
//--------------------------------------------------------------------------
if (nargin > 2)
{
GB_mx_mxArray_to_array (pargin [2], &Y, &nrows2, &ncols2, &Y_type) ;
ny = nrows2 * ncols2 ;
if (nrows2 != nrows || ncols2 != ncols)
{
FREE_ALL ;
mexErrMsgTxt ("X and Y must be the same size") ;
}
if (Y_type == NULL)
{
FREE_ALL ;
mexErrMsgTxt ("Y must be numeric") ;
}
ASSERT_TYPE_OK (Y_type, "Y type", GB0) ;
Y_size = Y_type->size ;
if (!GB_Type_compatible (op_ytype, Y_type))
{
FREE_ALL ;
mexErrMsgTxt ("op ytype not compatible with Y") ;
}
}
//--------------------------------------------------------------------------
// create Z of the same type as op_ztype
//--------------------------------------------------------------------------
pargout [0] = GB_mx_create_full (nrows, ncols, op_ztype) ;
Z = mxGetData (pargout [0]) ;
//--------------------------------------------------------------------------
// get scalar workspace
//--------------------------------------------------------------------------
char xwork [GB_VLA (op_xsize)] ;
char ywork [GB_VLA (op_ysize)] ;
GB_cast_function cast_X = GB_cast_factory (op_xtype->code, X_type->code) ;
//--------------------------------------------------------------------------
// do the op
//--------------------------------------------------------------------------
if (nargin > 2)
{
// Z = f (X,Y)
GxB_binary_function f_binary = op2->binop_function ;
GB_cast_function cast_Y = GB_cast_factory (op_ytype->code,Y_type->code);
for (int64_t k = 0 ; k < nx ; k++)
{
cast_X (xwork, X +(k*X_size), X_size) ;
cast_Y (ywork, Y +(k*Y_size), Y_size) ;
// printf ("x: ") ; GB_code_check (op_xtype->code,xwork,3,NULL) ;
// printf ("\ny: ") ; GB_code_check (op_ytype->code,ywork,3,NULL) ;
f_binary (Z +(k*op_zsize), xwork, ywork) ;
// printf ("\nz: ") ; GB_code_check (op_ztype->code,
// Z +(k*op_zsize), 3, NULL) ; printf ("\n") ;
}
}
else
{
// Z = f (X)
GxB_unary_function f_unary = op1->unop_function ;
for (int64_t k = 0 ; k < nx ; k++)
{
cast_X (xwork, X +(k*X_size), X_size) ;
f_unary (Z +(k*op_zsize), xwork) ;
}
}
//--------------------------------------------------------------------------
// free workspace and return
//--------------------------------------------------------------------------
FREE_ALL ;
}
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