Changeset 7053 in ntrip for trunk/BNC/src/bncutils.cpp

Timestamp:

Jul 16, 2015, 9:43:15 AM (9 years ago)

Author:

stuerze

Message:

CRC24 calculation as well as some definitions required for ephemeris encoding were shifted to have them also somewhere else available

File:

• trunk/BNC/src/bncutils.cpp (modified) (1 diff)

trunk/BNC/src/bncutils.cpp

@@ -867 +867 @@
   return (type == t_eph::Galileo) ? 255 : 15;
 }
+
+// Returns CRC24
+////////////////////////////////////////////////////////////////////////////
+unsigned long CRC24(long size, const unsigned char *buf) {
+  unsigned long crc = 0;
+  int ii;
+  while (size--) {
+    crc ^= (*buf++) << (16);
+    for(ii = 0; ii < 8; ii++) {
+      crc <<= 1;
+      if (crc & 0x1000000) {
+        crc ^= 0x01864cfb;
+      }
+    }
+  }
+  return crc;
+}
+