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44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*********************************************************************************************************
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* ------------------------------------------------------------------------------------------------------
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* file description
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* ------------------------------------------------------------------------------------------------------
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* \file cQueue.c
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* \unit cQueue
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* \brief This is a C language universal queue controller
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* \author Lamdonn
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* \version v1.0.1
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* \license GPL-2.0
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* \copyright Copyright (C) 2023 Lamdonn.
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********************************************************************************************************/
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#include "cQueue.h"
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void cQueue_initCap(cQueue *q, int cap)
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{
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q->head = 0;
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q->tail = 0;
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q->size = 0;
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q->cap = cap;
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}
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int cQueue_moveHead(cQueue *q)
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{
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int index = q->head;
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q->head = (q->head + 1) % q->cap;
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q->size--;
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return index;
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}
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int cQueue_moveTail(cQueue *q)
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{
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int index = q->tail;
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q->tail = (q->tail + 1) % q->cap;
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q->size++;
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return index;
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}
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int cQueue_index(cQueue *q, unsigned int index)
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{
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/* Starting from the head, calculate the data index */
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return (q->head + index) % (q->cap);
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}
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