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/*
* This file is part of libdyn.a, the C Dynamic Object library. It
* contains the private header file.
*
* There are no restrictions on this code; however, if you make any
* changes, I request that you document them so that I do not get
* credit or blame for your modifications.
*
* Written by Barr3y Jaspan, Student Information Processing Board (SIPB)
* and MIT-Project Athena, 1989.
*/
/*
* dynP.h -- private header file included by source files for libdyn.a.
*/
#ifndef _DynP_h
#define _DynP_h
#include <sysdep.h>
#include <dyn.h>
/*
* Rep invariant:
* 1) el_size is the number of bytes per element in the object
* 2) num_el is the number of elements currently in the object. It is
* one higher than the highest index at which an element lives.
* 3) size is the number of elements the object can hold without
* resizing. num_el <= index.
* 4) inc is a multiple of the number of elements the object grows by
* each time it is reallocated.
*/
typedef struct _DynObject {
DynPtr array;
int el_size, num_el, size, inc;
char debug, paranoid;
} DynObjectRec;
/* Internal functions */
int _DynRealloc __P((DynObject obj, int num_incs));
#define _DynResize(obj, req) \
((obj)->size > (req) ? DYN_OK : \
(_DynRealloc((obj), (((req) - (obj)->size) / (obj)->inc) + 1)))
#endif /* _DynP_h */
/* DON'T ADD STUFF AFTER THIS #endif */
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