Alternative Multi-dimensional Rappor

components/rappor/bloom_filter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_RAPPOR_BLOOM_FILTER_H_
 #define COMPONENTS_RAPPOR_BLOOM_FILTER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 29 matching lines @@
 
   // The number of bits to set for each string added.
   uint32_t hash_function_count_;
 
   // A number add to a hash function index to get a seed for that hash function.
   uint32_t hash_seed_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(BloomFilter);
 };
 
+
+namespace internal {
+
+// A function for getting bloom filters less than or equal to 64 bits.
+uint64_t GetBloomBits(uint32_t bytes_size,
+                      uint32_t hash_function_count,
+                      uint32_t hash_seed_offset,
+                      const std::string& str);
+
+}  // namespace internal
+
 }  // namespace rappor
 
 #endif  // COMPONENTS_RAPPOR_BLOOM_FILTER_H_