57 lines
1.6 KiB
Text
57 lines
1.6 KiB
Text
static const char *ident __attribute__((__unused__))
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= "$HeadURL: https://bradley.csail.mit.edu/svn/repos/cilk/5.4.3/examples/fib.cilk $ $LastChangedBy: sukhaj $ $Rev: 517 $ $Date: 2003-10-27 10:05:37 -0500 (Mon, 27 Oct 2003) $";
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/*
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* Copyright (c) 1994-2003 Massachusetts Institute of Technology
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* Copyright (c) 2003 Bradley C. Kuszmaul
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <cilk-lib.cilkh>
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#include <stdlib.h>
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#include <stdio.h>
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int START_OF_CILK_CODE = 0;
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cilk int fib(int n)
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{
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if (n < 2)
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return (n);
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else {
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int x, y;
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x = spawn fib(n - 1);
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y = spawn fib(n - 2);
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sync;
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return (x + y);
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}
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}
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cilk int main(int argc, char *argv[])
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{
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int n, result;
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if (argc != 2) {
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fprintf(stderr, "Usage: fib [<cilk options>] <n>\n");
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Cilk_exit(1);
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}
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n = atoi(argv[1]);
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result = spawn fib(n);
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sync;
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printf("Result: %d\n", result);
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return 0;
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}
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