Initial revision

1 files changed, 41 insertions, 0 deletions

diff --git a/proc/primes.c b/proc/primes.c
new file mode 100644
index 00000000..cf6d4ba7
--- /dev/null
+++ b/proc/primes.c
@@ -0,0 +1,41 @@
+/* Seive of Eratosthenes
+   Copyright (C) 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Array of prime numbers */
+int *primes;
+
+/* Allocated size of array `primes'. */
+int primessize;
+
+/* Number of primes recorded in array `primes'. */
+int nprimes;
+
+/* Initialize primes  */
+void
+initprimes (void)
+{
+  primessize = 1;
+  nprimes = 1;
+  primes = malloc (sizeof (int) * 1);
+  *primes = 2;
+}
+
+/* Return the next prime greater than or equal to n. */
+int 
+nextprime (int n)
+{
+  if (n >= primes[nprimes])