libcruft-util/stats.hpp

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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
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*
* Copyright 2010 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_STATS_HPP
#define __UTIL_STATS_HPP
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#include <iosfwd>
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namespace util {
namespace stats {
// Undefined until at least one value has been added.
template <typename T>
struct accumulator {
accumulator ();
void reset (void);
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void add (T);
void add (const accumulator<T> &);
size_t count;
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T min;
T max;
T sum;
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T range (void) const;
T mean (void) const;
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};
template <typename T>
std::ostream& operator<< (std::ostream&, const accumulator<T>&);
}
}
#endif