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authorMichael Sevakis <jethead71@rockbox.org>2006-11-06 18:18:05 +0000
committerMichael Sevakis <jethead71@rockbox.org>2006-11-06 18:18:05 +0000
commit5efee7c94adb691799becb605002e85e13bf11e5 (patch)
treec8f3e198cf40b5fad4f50ee558195ee906c261c5 /firmware/general.c
parent0f5cb94aa4a334366a746fcbb22f3335ca413265 (diff)
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Forgot to use cvs add on a few new files in the fresh checkout I used. woops.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11453 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/general.c')
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1 files changed, 77 insertions, 0 deletions
diff --git a/firmware/general.c b/firmware/general.c
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+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Michael Sevakis
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <limits.h>
+#include "config.h"
+#include "general.h"
+
+int round_value_to_list32(unsigned long value,
+ const unsigned long list[],
+ int count,
+ bool signd)
+{
+ unsigned long dmin = ULONG_MAX;
+ int idmin = -1, i;
+
+ for (i = 0; i < count; i++)
+ {
+ unsigned long diff;
+
+ if (list[i] == value)
+ {
+ idmin = i;
+ break;
+ }
+
+ if (signd ? ((long)list[i] < (long)value) : (list[i] < value))
+ diff = value - list[i];
+ else
+ diff = list[i] - value;
+
+ if (diff < dmin)
+ {
+ dmin = diff;
+ idmin = i;
+ }
+ }
+
+ return idmin;
+} /* round_value_to_list32 */
+
+/* Number of bits set in src_mask should equal src_list length */
+int make_list_from_caps32(unsigned long src_mask,
+ const unsigned long *src_list,
+ unsigned long caps_mask,
+ unsigned long *caps_list)
+{
+ int i, count;
+ unsigned long mask;
+
+ for (mask = src_mask, count = 0, i = 0;
+ mask != 0;
+ src_mask = mask, i++)
+ {
+ unsigned long test_bit;
+ mask &= mask - 1; /* Zero lowest bit set */
+ test_bit = mask ^ src_mask; /* Isolate the bit */
+ if (test_bit & caps_mask) /* Add item if caps has test bit set */
+ caps_list[count++] = src_list ? src_list[i] : (unsigned long)i;
+ }
+
+ return count;
+} /* make_list_from_caps32 */