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Last change
on this file since daf4c89 was
466fa01,
checked in by Peter A. Buhr <pabuhr@…>, 5 years ago
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add diagrams and example programs
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-
Property mode set to
100644
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File size:
476 bytes
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| Line | |
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| 1 | #include <cstdio> |
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| 2 | |
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| 3 | struct Fib { |
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| 4 | int fn = 1, fn1 = 0; |
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| 5 | void * next = nullptr; |
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| 6 | |
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| 7 | int operator()() { |
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| 8 | if ( __builtin_expect(next != 0, 1) ) goto *next; |
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| 9 | next = &&s1; |
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| 10 | for ( ;; ) { |
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| 11 | return fn1; |
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| 12 | s1: ; |
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| 13 | int fn0 = fn + fn1; |
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| 14 | fn1 = fn; |
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| 15 | fn = fn0; |
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| 16 | return fn1; |
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| 17 | } |
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| 18 | } |
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| 19 | }; |
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| 20 | int main() { |
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| 21 | Fib f1, f2; |
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| 22 | for ( int i = 0; i < 10; i += 1 ) { |
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| 23 | printf( "%d %d\n", f1(), f2() ); |
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| 24 | } |
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| 25 | } |
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| 26 | |
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| 27 | // Local Variables: // |
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| 28 | // tab-width: 4 // |
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| 29 | // compile-command: "gcc-8 Fib3.cc" // |
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| 30 | // End: // |
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