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/* { dg-do run { target { i?86-*-* x86_64-*-* } } } */
/* { dg-options "-fcilkplus -w" } */
/* { dg-additional-options "-lcilkrts" { target { i?86-*-* x86_64-*-* } } } */
#include <stdio.h>
#include <stdlib.h>
#define DEFAULT_VALUE "30"
int fib (char *n_char)
{
int n;
char n_char_minus_one[20], n_char_minus_two[20];
if (n_char)
n = atoi (n_char);
else
n = atoi(DEFAULT_VALUE);
if (n < 2)
return n;
else
{
int x, y;
sprintf (n_char_minus_one,"%d", n-1);
sprintf (n_char_minus_two,"%d", n-2);
x = _Cilk_spawn fib (n_char_minus_one);
y = _Cilk_spawn fib (n_char_minus_two);
_Cilk_sync;
return (x+y);
}
}
int fib_serial (int n)
{
int x, y;
if (n < 2)
return n;
else
{
x = fib_serial (n-1);
y = fib_serial (n-2);
return (x+y);
}
return 0;
}
int main2_parallel (int argc, char *argv[])
{
int n, result_parallel = 0;
if (argc == 2)
{
result_parallel = _Cilk_spawn fib (argv[1]);
_Cilk_sync;
}
else
{
result_parallel = _Cilk_spawn fib((char *)"30");
_Cilk_sync;
}
return result_parallel;
}
int main2_serial (int argc, char *argv[])
{
int n, result_serial = 0;
if (argc == 2)
result_serial = fib_serial (atoi (argv[1]));
else
result_serial = fib_serial (atoi (DEFAULT_VALUE));
return result_serial;
}
int main (void)
{
if (main2_serial (1, 0) != main2_parallel (1,0))
return 1;
return 0;
}
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