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//------------------------------------------------------------------------------
// gb_string_to_unop: get a GraphBLAS unary operator from a string
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "gb_interface.h"
// The string has the form op_name.op_type. For example 'abs.double' is the
// GrB_ABS_FP64 operator. The type is optional. If not present, it defaults
// to the default_type parameter.
GrB_UnaryOp gb_string_to_unop // return unary operator from a string
(
char *opstring, // string defining the operator
const GrB_Type default_type // default type if not in the string
)
{
//--------------------------------------------------------------------------
// get the string and parse it
//--------------------------------------------------------------------------
int32_t position [2] ;
gb_find_dot (position, opstring) ;
char *op_name = opstring ;
char *op_typename = NULL ;
if (position [0] >= 0)
{
opstring [position [0]] = '\0' ;
op_typename = opstring + position [0] + 1 ;
}
//--------------------------------------------------------------------------
// get the operator type
//--------------------------------------------------------------------------
bool type_not_given = (op_typename == NULL) ;
GrB_Type type ;
if (op_typename == NULL)
{
type = default_type ;
}
else
{
type = gb_string_to_type (op_typename) ;
}
//--------------------------------------------------------------------------
// convert the string to a GraphBLAS unary operator, built-in or Complex
//--------------------------------------------------------------------------
return (gb_string_and_type_to_unop (op_name, type, type_not_given)) ;
}
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