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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /xpcom/io/crc32c.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/io/crc32c.h')
-rw-r--r--xpcom/io/crc32c.h23
1 files changed, 23 insertions, 0 deletions
diff --git a/xpcom/io/crc32c.h b/xpcom/io/crc32c.h
new file mode 100644
index 000000000..f7035fa15
--- /dev/null
+++ b/xpcom/io/crc32c.h
@@ -0,0 +1,23 @@
+#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