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authorHyungKyu Song <hk76.song@samsung.com>2013-02-16 00:52:26 +0900
committerHyungKyu Song <hk76.song@samsung.com>2013-02-16 00:52:26 +0900
commit7971aaeae56bd004926a9c8ad20ce9e51d3a65ff (patch)
treed444998270156668444cd7e9448998d4ca960db5 /glib-1.2.10/gprimes.c
parent5ec49d7969628ec586e19efdd894966519ed0733 (diff)
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-rw-r--r--glib-1.2.10/gprimes.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/glib-1.2.10/gprimes.c b/glib-1.2.10/gprimes.c
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+/* GLIB - Library of useful routines for C programming
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GLib Team and others 1997-1999. See the AUTHORS
+ * file for a list of people on the GLib Team. See the ChangeLog
+ * files for a list of changes. These files are distributed with
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/*
+ * MT safe
+ */
+
+#include "glib.h"
+
+static const guint g_primes[] =
+{
+ 11,
+ 19,
+ 37,
+ 73,
+ 109,
+ 163,
+ 251,
+ 367,
+ 557,
+ 823,
+ 1237,
+ 1861,
+ 2777,
+ 4177,
+ 6247,
+ 9371,
+ 14057,
+ 21089,
+ 31627,
+ 47431,
+ 71143,
+ 106721,
+ 160073,
+ 240101,
+ 360163,
+ 540217,
+ 810343,
+ 1215497,
+ 1823231,
+ 2734867,
+ 4102283,
+ 6153409,
+ 9230113,
+ 13845163,
+};
+
+static const guint g_nprimes = sizeof (g_primes) / sizeof (g_primes[0]);
+
+guint
+g_spaced_primes_closest (guint num)
+{
+ gint i;
+
+ for (i = 0; i < g_nprimes; i++)
+ if (g_primes[i] > num)
+ return g_primes[i];
+
+ return g_primes[g_nprimes - 1];
+}