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authorTom2011-08-16 15:41:46 +0200
committerTom2011-08-16 15:41:46 +0200
commitf910171deda0933e506cf3ffc216ee8daa418c24 (patch)
treedddee7cdad41fc4f3d8c1de95148d0a2daac1193 /Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h
parentanother system info 2 description (diff)
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corrected spelling mistake and added 2 new papers for gsm specs
Diffstat (limited to 'Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h')
-rw-r--r--Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h b/Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h
new file mode 100644
index 0000000..0e52417
--- /dev/null
+++ b/Src/osmoconbb/src/shared/libosmocore/include/osmocom/core/crc16.h
@@ -0,0 +1,34 @@
+/*
+ * This was copied from the linux kernel and adjusted for our types.
+ */
+/*
+ * crc16.h - CRC-16 routine
+ *
+ * Implements the standard CRC-16:
+ * Width 16
+ * Poly 0x8005 (x^16 + x^15 + x^2 + 1)
+ * Init 0
+ *
+ * Copyright (c) 2005 Ben Gardner <bgardner@wabtec.com>
+ *
+ * This source code is licensed under the GNU General Public License,
+ * Version 2. See the file COPYING for more details.
+ */
+
+#ifndef __CRC16_H
+#define __CRC16_H
+
+#include <stdint.h>
+
+#include <sys/types.h>
+
+extern uint16_t const osmo_crc16_table[256];
+
+extern uint16_t osmo_crc16(uint16_t crc, const uint8_t *buffer, size_t len);
+
+static inline uint16_t osmo_crc16_byte(uint16_t crc, const uint8_t data)
+{
+ return (crc >> 8) ^ osmo_crc16_table[(crc ^ data) & 0xff];
+}
+
+#endif /* __CRC16_H */