ichiring.h

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/*
 * SPDX-License-Identifier: MIT
 * Copyright (c) 2024 IUPAC and InChI Trust
 */
 
 
#ifndef _INCHIRING_H_
#define _INCHIRING_H_
 
#include "extr_ct.h"
 
#define QUEUE_QINT 1
typedef AT_RANK qInt; /* queue optimization: known type */
 
#if ( QUEUE_QINT == 1 )
#define QINT_TYPE qInt
#else
#define QINT_TYPE void
#endif
 
typedef struct tagQieue {
    QINT_TYPE *Val;
    int nTotLength;
    int nFirst;  /* element to remove if nLength > 0 */
    int nLength; /* (nFirst + nLength) is next free position */
#if ( QUEUE_QINT != 1 )
    int nSize;
#endif
}QUEUE;
 
#ifndef COMPILE_ALL_CPP
#ifdef __cplusplus
extern "C" {
#endif
#endif
 
    QUEUE *QueueCreate( int nTotLength, int nSize );
    QUEUE *QueueDelete( QUEUE *q );
    int is_bond_in_Nmax_memb_ring( inp_ATOM* atom, int at_no, int neigh_ord, QUEUE *q, AT_RANK *nAtomLevel, S_CHAR *cSource, AT_RANK nMaxRingSize );
    int is_atom_in_3memb_ring( inp_ATOM* atom, int at_no );
 
#ifndef COMPILE_ALL_CPP
#ifdef __cplusplus
}
#endif
#endif
 
 
#endif    /* _INCHIRING_H_ */