# source:tests/coroutine/fibonacci_1.cfa@1528a2c

Last change on this file since 1528a2c was 107b01a, checked in by Thierry Delisle <tdelisle@…>, 5 years ago

Several changes to the makefiles

• change .c tests to .cfa
• add require for libtool in configure
• libtoolize to fix some warnings
• Property mode set to `100644`
File size: 1.2 KB
Line
1//
2// Cforall Version 1.0.0 Copyright (C) 2018 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// fibonacci_1.c -- 1-state finite-state machine: precomputed first two states returning f(n - 2)
8//
9// Author           : Peter A. Buhr
10// Created On       : Thu Apr 26 23:20:08 2018
13// Update Count     : 14
14//
15
16#include <fstream.hfa>
17#include <coroutine.hfa>
18
19coroutine Fibonacci { int ret; };                                               // used for communication
20
21void main( Fibonacci & fib ) with( fib ) {                              // called on first resume
22        int fn, fn1 = 1, fn2 = 0;                                                       // precompute first two states
23        for () {
24                ret = fn2;
25                fn = fn1 + fn2;  fn2 = fn1;  fn1 = fn;                  // general case
26                suspend();                                                                              // restart last resume
27        } // for
28}
29
30int next( Fibonacci & fib ) with( fib ) {
31        resume( fib );                                                                          // restart last suspend
32        return ret;
33}
34
35int main() {
36        Fibonacci f1, f2;
37        for ( 10 ) {                                                                            // print N Fibonacci values
38                sout | next( f1 ) | next( f2 );
39        } // for
40}
41
42// Local Variables: //
43// tab-width: 4 //
44// compile-command: "cfa fibonacci_1.c" //
45// End: //
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