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//
// $Id$
//
//
// Original author: Witold Wolski <wewolski@gmail.com>
//
// Copyright : ETH Zurich
//
// 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
//
// 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.
//
#ifndef DETERMINEBINWIDTHUTILITIES_H
#define DETERMINEBINWIDTHUTILITIES_H
#include <functional>
#include <boost/cstdint.hpp>
#include <algorithm>
namespace ralab
{
namespace base
{
namespace resample
{
typedef boost::int32_t int32_t;
namespace utilities{
template<class T>
struct meanfunctor : std::binary_function<T,T,T>{
T operator()(const T & x, const T& y){
return (x+y)/2.;
}
};
template <
typename InputIterator,
typename OutputIterator,
typename TN //= int32_t
>
OutputIterator summ
(
InputIterator begin, //!< [in] begin
InputIterator end, //!< [in] end
OutputIterator destBegin, //!< [out] dest begin
TN lag = 1//!< [in] an integer indicating which lag to use.
)
{
return( std::transform(begin + lag
, end
, begin
, destBegin
, meanfunctor<typename InputIterator::value_type>())
);
}
template<typename TRealI>
double determine(TRealI begin, TRealI end,double maxj=5.){
//BOOST_ASSERT(!boost::range::is_sorted(begin,end));
double j = 1.;
double average = *begin;
double sum = average;
int32_t i = 1;
for(; begin != end ; ++begin, ++i){
while(*begin > (j+0.5) *average){
++j;
}
if(j > maxj){
break;
}
sum += *begin/j;
average = sum/static_cast<double>(i);
}
return average;
}
}
}
}
}
#endif
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