40 lines
941 B
C
40 lines
941 B
C
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/* HEADER - P_QUE.H
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Copyright (C) Psion PLC 1991-92
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VER DATE BY DESCRIPTION
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===== ======== === ===========
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1.00F 26/04/90 NSM First relase
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1.10F 07/07/92 NSM Second release
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*/
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#ifndef P_QUE_H
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#define P_QUE_H
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#include <stdepoc.h>
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#define P_ISEMPTYQ(q) ((q)==(q)->next)
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#define P_INITQ(q) (q)->next=(q)->prev=(q)
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#define P_DECLAREQ(q) P_QUE q = {&q,&q}
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typedef struct p_que
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{
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struct p_que *next; /* Next entry */
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struct p_que *prev; /* Previous entry */
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} P_QUE;
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typedef struct
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{
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P_QUE q; /* Que entry control */
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long int key; /* Delta key value */
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} P_DELTA;
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#ifdef __cplusplus
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extern "C" {
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#endif
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#pragma save,call(reg_param =>(si,di),reg_saved =>(ax,cx,dx,si,di,EPOC_SAVE))
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extern void p_enque(P_QUE *,P_QUE *);
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extern void p_deque(P_QUE *);
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#pragma restore
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P_DELTA *p_enqued(P_QUE *,P_DELTA *,long int);
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P_DELTA *p_dequed(P_QUE *,P_DELTA *);
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#ifdef __cplusplus
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}
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#endif
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#endif // P_QUE_H
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