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//------------------------------------------------------------------------------
// GB_unop_new: create a new named unary operator
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// a unary operator: z = f (x). The unary function signature must be
// void f (void *z, const void *x), and then it must recast its input and
// output arguments internally as needed.
// The unary op header is allocated by the caller, and passed in uninitialized.
#include "GB.h"
#include "unaryop/GB_unop.h"
GrB_Info GB_unop_new
(
GrB_UnaryOp op, // new unary operator
GxB_unary_function function, // unary function (may be NULL)
GrB_Type ztype, // type of output z
GrB_Type xtype, // type of input x
const char *unop_name, // name of the user function
const char *unop_defn, // definition of the user function
const GB_Opcode opcode // opcode for the function
)
{
//--------------------------------------------------------------------------
// check inputs
//--------------------------------------------------------------------------
ASSERT (op != NULL) ;
ASSERT (ztype != NULL) ;
ASSERT (xtype != NULL) ;
ASSERT (GB_IS_UNARYOP_CODE (opcode)) ;
//--------------------------------------------------------------------------
// initialize the unary operator
//--------------------------------------------------------------------------
op->magic = GB_MAGIC ;
op->user_name = NULL ;
op->user_name_size = 0 ;
op->xtype = xtype ;
op->ztype = ztype ;
op->ytype = NULL ;
op->unop_function = function ; // NULL for IDENTITY_UDT operator
op->idxunop_function = NULL ;
op->binop_function = NULL ;
op->idxbinop_function = NULL ;
op->theta_type = NULL ;
op->theta = NULL ;
op->theta_size = 0 ;
op->opcode = opcode ;
//--------------------------------------------------------------------------
// get the unary op name and defn
//--------------------------------------------------------------------------
// the unary op is JIT'able only if all its types are jitable
bool jitable =
(ztype->hash != UINT64_MAX) &&
(xtype->hash != UINT64_MAX) ;
return (GB_op_name_and_defn (
// output:
op->name, &(op->name_len), &(op->hash), &(op->defn), &(op->defn_size),
// input:
unop_name, unop_defn, opcode == GB_USER_unop_code, jitable)) ;
}
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