Page Speed Optimization Libraries  1.5.27.2
net/instaweb/util/public/simple_random.h
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00001 /*
00002  * Copyright 2013 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_UTIL_PUBLIC_SIMPLE_RANDOM_H_
00020 #define NET_INSTAWEB_UTIL_PUBLIC_SIMPLE_RANDOM_H_
00021 
00022 #include "net/instaweb/util/public/basictypes.h"
00023 #include "net/instaweb/util/public/string.h"
00024 
00025 namespace net_instaweb {
00026 
00032 class SimpleRandom {
00033  public:
00034   SimpleRandom() : z_(10), w_(25) {}
00035   ~SimpleRandom() {}
00036   int Next();
00037 
00038   GoogleString GenerateHighEntropyString(int size);
00039 
00040  private:
00041   uint32 z_;
00042   uint32 w_;
00043 
00045 };
00046 
00047 }  
00048 
00049 #endif  ///< NET_INSTAWEB_UTIL_PUBLIC_SIMPLE_RANDOM_H_
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