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-rw-r--r--xpcom/io/crc32c.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/xpcom/io/crc32c.h b/xpcom/io/crc32c.h
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef crc32c_h
+#define crc32c_h
+
+#include <stdint.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Compute a CRC32c as defined in RFC3720. This is a different polynomial than
+// what is used in the crc for zlib, etc. Typical usage to calculate a new CRC:
+//
+// ComputeCrc32c(~0, buffer, bufferLength);
+//
+uint32_t ComputeCrc32c(uint32_t aCrc, const void* aBuf, size_t aSize);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // crc32c_h