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/*
Copyright (C) 2001-2003, Parrot Foundation.
=head1 NAME
examples/benchmarks/primes2.c - Calculate prime numbers < 10000
=head1 SYNOPSIS
% make examples/benchmarks/primes2
% time examples/benchmarks/primes2
=head1 DESCRIPTION
Calculates all the prime numbers up to 10000 and prints out the number
of primes and the last one found.
=head2 Functions
=over 4
=cut
*/
/*
=item C<int main(int argc, char *argv[])>
Main function to run the example.
=cut
*/
int
main(int argc, char *argv[])
{
int i=0, max=500;
int i6 = 0;
int i7;
while (1) {
if (isprime1(i)) {
i7 = i;
i6++;
}
i++;
if (i==max) {
break;
}
}
printf("N primes calculated to %d is %d\nlast is: %d\n", max, i6, i7);
return 0;
}
/*
=item C<int isprime1(int input)>
Determines if the input number is a prime.
=cut
*/
int isprime1(int input)
{
int n;
if (input < 1) {
return 0;
}
n = input - 1;
while (n > 1) {
if (input%n == 0) return 0;
n--;
}
return 1;
}
/*
=back
=head1 SEE ALSO
F<examples/benchmarks/primes.c>,
F<examples/benchmarks/primes.pasm>,
F<examples/benchmarks/primes.pl>,
F<examples/benchmarks/primes2_p.pasm>,
F<examples/benchmarks/primes2.pir>,
F<examples/benchmarks/primes2.py>.
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/
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