Project

General

Profile

Download (827 Bytes) Statistics
| Branch: | Tag: | Revision:
1 52c5ba00 David Doose
2
#ifndef _ARROW_CPP
3
#define _ARROW_CPP
4
5 d1b9423d David Doose
#include <stdint.h>
6 52c5ba00 David Doose
#include <stdlib.h>
7
8
struct _arrow_mem {
9
	struct _arrow_reg {
10
		bool _first;
11
	} _reg; 
12
};
13
14
extern struct _arrow_mem *_arrow_alloc ();
15
16
#define _arrow_DECLARE(attr, inst)\
17
  attr struct _arrow_mem inst;
18
  
19
#define _arrow_LINK(inst) do {\
20
  ;\
21
} while (0)
22
23
#define _arrow_ALLOC(attr, inst)\
24
  _arrow_DECLARE(attr, inst);\
25
  _arrow_LINK(inst)
26
27
#define _arrow_init(self) {}
28
29
#define _arrow_clear(self) {}
30
31
#define _arrow_step(x,y,output,self) ((self)->_reg._first?((self)->_reg._first=0,(*output = x)):(*output = y))
32
33
#define _arrow_reset(self) {(self)->_reg._first = 1;}
34
35
/* Step macro for specialized arrows of the form: (true -> false) */
36
37
#define _once_step(output,self) { *output = (self)->_reg._first; if ((self)->_reg._first) { (self)->_reg._first=0; }; }
38
39
#endif