ADTast-experimentalpthread-emulation
Last change
on this file since d895e32 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:
612 bytes
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Rev | Line | |
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[466fa01] | 1 | #include <stdio.h> |
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| 2 | |
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| 3 | #define FibCtor { 0, 0, NULL } |
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| 4 | typedef struct { |
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| 5 | int fn1, fn2; |
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| 6 | void * next; |
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| 7 | } Fib; |
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| 8 | |
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| 9 | int fib( Fib * f ) { |
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| 10 | if ( __builtin_expect(f->next != 0, 1) ) goto *f->next; |
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| 11 | s1: |
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| 12 | f->fn1 = 0; |
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| 13 | f->next = &&s2; |
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| 14 | return f->fn1; |
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| 15 | s2: |
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| 16 | f->fn2 = f->fn1; |
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| 17 | f->fn1 = 1; |
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| 18 | f->next = &&s3; |
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| 19 | return f->fn1; |
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| 20 | s3:; |
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| 21 | int fn = f->fn1 + f->fn2; |
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| 22 | f->fn2 = f->fn1; |
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| 23 | f->fn1 = fn; |
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| 24 | return fn; |
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| 25 | } |
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| 26 | int main() { |
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| 27 | Fib f1 = FibCtor, f2 = FibCtor; |
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| 28 | for ( int i = 0; i < 10; i += 1 ) { |
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| 29 | printf( "%d %d\n", fib( &f1 ), fib( &f2 ) ); |
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| 30 | } |
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| 31 | } |
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| 32 | |
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| 33 | // Local Variables: // |
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| 34 | // tab-width: 4 // |
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| 35 | // compile-command: "gcc-8 Fib1.c" // |
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| 36 | // End: // |
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