diff options
Diffstat (limited to 'wsutil')
| -rw-r--r-- | wsutil/crc10.c | 22 | ||||
| -rw-r--r-- | wsutil/crc10.h | 2 |
2 files changed, 8 insertions, 16 deletions
diff --git a/wsutil/crc10.c b/wsutil/crc10.c index 9f04d93c04..17d6f1a291 100644 --- a/wsutil/crc10.c +++ b/wsutil/crc10.c @@ -69,25 +69,17 @@ static const guint16 byte_crc10_table[256] = { 0x021e, 0x002d, 0x004b, 0x0278, 0x0087, 0x02b4, 0x02d2, 0x00e1 }; -/* update the data block's CRC-10 remainder one byte at a time */ -guint16 update_crc10_by_bytes(guint16 crc10, const guint8 *data_blk_ptr, - int data_blk_size) +/* Update the data block's CRC-10 remainder one byte at a time */ +guint16 +update_crc10_by_bytes(guint16 crc10_accum, const guint8 *data_blk_ptr, + int data_blk_size) { register int i; - guint16 crc10_accum = 0; for (i = 0; i < data_blk_size; i++) { - crc10_accum = ((crc10_accum << 8) & 0x3ff) - ^ byte_crc10_table[( crc10_accum >> 2) & 0xff] - ^ *data_blk_ptr++; + crc10_accum = ((crc10_accum << 8) & 0x3ff) + ^ byte_crc10_table[( crc10_accum >> 2) & 0xff] + ^ *data_blk_ptr++; } - crc10_accum = ((crc10_accum << 8) & 0x3ff) - ^ byte_crc10_table[( crc10_accum >> 2) & 0xff] - ^ (crc10>>2); - crc10_accum = ((crc10_accum << 8) & 0x3ff) - ^ byte_crc10_table[( crc10_accum >> 2) & 0xff] - ^ ((crc10<<6) & 0xFF); - return crc10_accum; } - diff --git a/wsutil/crc10.h b/wsutil/crc10.h index 41b631962b..f881f3bda9 100644 --- a/wsutil/crc10.h +++ b/wsutil/crc10.h @@ -26,7 +26,7 @@ #include "ws_symbol_export.h" -/* update the data block's CRC-10 remainder one byte at a time */ +/* Update the data block's CRC-10 remainder one byte at a time */ WS_DLL_PUBLIC guint16 update_crc10_by_bytes(guint16 crc10, const guint8 *data_blk_ptr, int data_blk_size); #endif /* __CRC10_H__ */ |