Last change
on this file since bfa7bf0 was
7bef8cf,
checked in by Peter A. Buhr <pabuhr@…>, 16 months ago
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start paper on llheap
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-
Property mode set to
100644
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File size:
619 bytes
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Rev | Line | |
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[7bef8cf] | 1 | #include <stdio.h> |
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| 2 | |
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| 3 | #define FIB_INIT { 0 } |
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| 4 | typedef struct { int restart; int fn1, fn2; } Fib; |
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| 5 | int fib( Fib * f ) { |
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| 6 | static void * states[] = { &&s0, &&s1, &&s2 }; |
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| 7 | goto *states[f->restart]; |
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| 8 | s0: |
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| 9 | f->fn1 = 0; |
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| 10 | f->restart = 1; |
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| 11 | return f->fn1; |
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| 12 | s1: |
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| 13 | f->fn2 = f->fn1; |
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| 14 | f->fn1 = 1; |
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| 15 | f->restart = 2; |
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| 16 | return f->fn1; |
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| 17 | s2:; |
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| 18 | int fn = f->fn1 + f->fn2; |
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| 19 | f->fn2 = f->fn1; |
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| 20 | f->fn1 = fn; |
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| 21 | return fn; |
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| 22 | } |
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| 23 | int main() { |
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| 24 | Fib f1 = FIB_INIT, f2 = FIB_INIT; |
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| 25 | for ( int i = 0; i < 10; i += 1 ) { |
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| 26 | printf( "%d %d\n", fib( &f1 ), fib( &f2 ) ); |
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| 27 | } |
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| 28 | } |
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| 29 | |
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| 30 | // Local Variables: // |
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| 31 | // tab-width: 4 // |
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| 32 | // compile-command: "gcc Fib2.c" // |
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| 33 | // End: // |
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