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12 lines
321 B
C
12 lines
321 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2007 - 2016 Realtek Corporation. All rights reserved. */
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#ifndef __CIRC_BUF_H_
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#define __CIRC_BUF_H_ 1
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#define CIRC_CNT(head,tail,size) (((head) - (tail)) & ((size)-1))
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#define CIRC_SPACE(head,tail,size) CIRC_CNT((tail),((head)+1),(size))
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#endif //_CIRC_BUF_H_
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