source: doc/papers/concurrency/examples/Fib2.c @ a573c22

arm-ehjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-expr
Last change on this file since a573c22 was a573c22, checked in by Peter A. Buhr <pabuhr@…>, 22 months ago

example programs updated for concurrency paper

  • Property mode set to 100644
File size: 619 bytes
Line 
1#include <stdio.h>
2
3#define FIB_INIT { 0 }
4typedef struct { int restart; int fn1, fn2; } Fib;
5int fib( Fib * f ) {
6        static void * states[] = { &&s0, &&s1, &&s2 };
7        goto *states[f->restart];
8  s0:
9        f->fn1 = 0;
10        f->restart = 1;
11        return f->fn1;
12  s1:
13        f->fn2 = f->fn1;
14        f->fn1 = 1;
15        f->restart = 2;
16        return f->fn1;
17  s2:;
18        int fn = f->fn1 + f->fn2;
19        f->fn2 = f->fn1;
20        f->fn1 = fn;
21        return fn;
22}
23int main() {
24        Fib f1 = FIB_INIT, f2 = FIB_INIT;
25        for ( int i = 0; i < 10; i += 1 ) {
26                printf( "%d %d\n", fib( &f1 ), fib( &f2 ) );
27        }
28}
29
30// Local Variables: //
31// tab-width: 4 //
32// compile-command: "gcc Fib2.c" //
33// End: //
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