rtforth 0.6.8

Forth implemented in Rust for realtime application
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169

/* Generated by forth2c, (C) Martin Maierhofer 1994 */

                     /* size of data space, can be changed ! */
int _C_DATA_SIZE = 8192;

#include "forth.h"   /* general forth definitions */
#include "forth2c.h" /* forth2c specific definitions */


Cell fib(Cell p0)
{
Cell _c_result;
Cell x0;
Cell x1;

	{	/* dup */
		Cell n;
		
		n = p0;
		
		p0 = n;
		x0 = n;
		
	}
	
	{	/* Literal */
		x1 = 2;
	}
	
	{	/* less-than */
		Cell n1, n2, n;
		n1 = x1;
		n2 = x0;
		
		n = FLAG(n2 < n1);
		x0 = n;
		
	}
	
	if (!x0) goto label0;
	
	{	/* drop */
		
	}
	
	{	/* Literal */
		p0 = 1;
	}
	
	goto label1;
	
	label0:
	
	
	{	/* dup */
		Cell n;
		
		n = p0;
		
		p0 = n;
		x0 = n;
		
	}
	
	{	/* one_minus */
		Cell n;
		
		n = x0;
		x0 = n - 1;
		
	}
	
	{	/* recurse */
		
		{	
			Cell _C_locret;
			
			_C_locret = fib(x0);
			x0 = _C_locret;
			
		}
		
	}
	
	{	/* swap */
		Cell n1, n2;
		
		n1 = x0;
		n2 = p0;
		
		p0 = n1;
		x0 = n2;
		
	}
	
	{	/* Literal */
		x1 = 2;
	}
	
	{	/* minus */
		Cell n1, n2, n;
		n1 = x1;
		n2 = x0;
		
		n = n2 - n1;
		x0 = n;
		
	}
	
	{	/* recurse */
		
		{	
			Cell _C_locret;
			
			_C_locret = fib(x0);
			x0 = _C_locret;
			
		}
		
	}
	
	{	/* plus */
		Cell n1, n2, n;
		n1 = x0;
		n2 = p0;
		
		n = n2 + n1;
		p0 = n;
		
	}
	
	label1:
	
	
	{	/* exit */
		_c_result = p0;
		return (_c_result);
		
	}
	
}

void main(void)
{
Cell x0;

	{	/* Literal */
		x0 = 34;
	}
	
	{	
		Cell _C_locret;
		
		_C_locret = fib(x0);
		x0 = _C_locret;
		
	}
	
	{	/* dot */
		printf("%d ", x0);
		fflush(stdout);
	}
	
	{	/* exit */
		return;
		
	}
	
}