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46 lines
1.4 KiB
46 lines
1.4 KiB
#ifndef __stack_h_
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#define __stack_h_
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/*
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** Copyright 1994, Silicon Graphics, Inc.
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** All Rights Reserved.
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**
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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
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** the contents of this file may not be disclosed to third parties, copied or
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** duplicated in any form, in whole or in part, without the prior written
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** permission of Silicon Graphics, Inc.
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**
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** RESTRICTED RIGHTS LEGEND:
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** Use, duplication or disclosure by the Government is subject to restrictions
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** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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** rights reserved under the Copyright Laws of the United States.
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**
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** Author: Eric Veach, July 1994.
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*/
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typedef struct Stack Stack;
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struct Stack {
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int size;
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int max;
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void **data;
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};
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Stack *__gl_StackNew( void );
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void __gl_StackGrow( Stack *s );
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void __gl_StackFree( Stack *s );
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#define StackNew() __gl_StackNew()
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#define StackFree(s) __gl_StackFree( s )
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#define StackSize(s) ((s)->size)
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#define StackPush(s,d) { if ((s)->size >= (s)->max) __gl_StackGrow( s ); \
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(s)->data[((s)->size)++] = (d); }
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#define StackPop(s) ((s)->data[--((s)->size)])
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#define StackTop(s) ((s)->data[(s)->size - 1])
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#define StackNth(s,n) ((s)->data[(s)->size - (n) - 1])
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#endif
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