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//------------------------------------------------------------------------------
// GB_mx_mxArray_to_SelectOp
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// Convert a built-in string to a built-in GraphBLAS SelectOp.
#include "GB_mex.h"
bool GB_mx_mxArray_to_SelectOp // true if successful
(
GxB_SelectOp *handle, // returns GraphBLAS version of op
const mxArray *op_builtin, // built-in version of op
const char *name // name of the argument
)
{
(*handle) = NULL ;
const mxArray *opname_mx = NULL ;
if (op_builtin == NULL || mxIsEmpty (op_builtin))
{
mexWarnMsgIdAndTxt ("GB:warn", "select op missing") ;
return (false) ;
}
else if (mxIsChar (op_builtin))
{
// op is a string
opname_mx = op_builtin ;
}
else
{
mexWarnMsgIdAndTxt ("GB:warn", "select op must be string") ;
return (false) ;
}
// find the corresponding built-in GraphBLAS operator
GxB_SelectOp op ;
// get the string
#define LEN 256
char opname [LEN+2] ;
int len = GB_mx_mxArray_to_string (opname, LEN, opname_mx) ;
if (len < 0)
{
return (false) ;
}
if (MATCH (opname, "tril" )) { op = GxB_TRIL ; }
else if (MATCH (opname, "triu" )) { op = GxB_TRIU ; }
else if (MATCH (opname, "diag" )) { op = GxB_DIAG ; }
else if (MATCH (opname, "offdiag" )) { op = GxB_OFFDIAG ; }
else if (MATCH (opname, "nonzero" )) { op = GxB_NONZERO ; }
else if (MATCH (opname, "eq_zero" )) { op = GxB_EQ_ZERO ; }
else if (MATCH (opname, "gt_zero" )) { op = GxB_GT_ZERO ; }
else if (MATCH (opname, "ge_zero" )) { op = GxB_GE_ZERO ; }
else if (MATCH (opname, "lt_zero" )) { op = GxB_LT_ZERO ; }
else if (MATCH (opname, "le_zero" )) { op = GxB_LE_ZERO ; }
else if (MATCH (opname, "ne_thunk" )) { op = GxB_NE_THUNK ; }
else if (MATCH (opname, "eq_thunk" )) { op = GxB_EQ_THUNK ; }
else if (MATCH (opname, "gt_thunk" )) { op = GxB_GT_THUNK ; }
else if (MATCH (opname, "ge_thunk" )) { op = GxB_GE_THUNK ; }
else if (MATCH (opname, "lt_thunk" )) { op = GxB_LT_THUNK ; }
else if (MATCH (opname, "le_thunk" )) { op = GxB_LE_THUNK ; }
else if (MATCH (opname, "isnan" )) { op = NULL ; }
else
{
mexWarnMsgIdAndTxt ("GB:warn", "unknown select op") ;
return (false) ;
}
// return the op
if (op != NULL)
{
ASSERT_SELECTOP_OK (op, name, GB0) ;
}
(*handle) = op ;
return (true) ;
}
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