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rescale.h
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2021 John Wellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#ifndef ETL_RESCALE_INCLUDED
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#define ETL_RESCALE_INCLUDED
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#include "
platform.h
"
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#include "
functional.h
"
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#include "
type_traits.h
"
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#include "
algorithm.h
"
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//#include <math.h>
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#include <stdint.h>
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namespace
etl
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{
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//***************************************************************************
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//***************************************************************************
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template
<
typename
TInput,
typename
TOutput>
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class
rescale
:
public
etl::unary_function
<TOutput, TInput>
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{
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public
:
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//*****************************************************************
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//*****************************************************************
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rescale
(
TInput
input_min_value_
,
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TInput
input_max_value_
,
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TOutput
output_min_value_
,
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TOutput
output_max_value_
)
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: input_min_value(
input_min_value_
)
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, output_min_value(
output_min_value_
)
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, output_max_value(
output_max_value_
)
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, multiplier(
double
(
output_max_value_
-
output_min_value_
) /
double
(
input_max_value_
-
input_min_value_
))
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{
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}
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//*****************************************************************
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//*****************************************************************
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TOutput
operator ()
(
TInput
value)
const
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{
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return
TOutput
(((value - input_min_value) * multiplier)) + output_min_value;;
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}
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private
:
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const
TInput
input_min_value;
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const
TOutput
output_min_value;
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const
TOutput
output_max_value;
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double
multiplier;
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};
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}
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#endif
algorithm.h
etl::rescale
Rescale function.
Definition
rescale.h:49
etl::rescale::rescale
rescale(TInput input_min_value_, TInput input_max_value_, TOutput output_min_value_, TOutput output_max_value_)
Constructor.
Definition
rescale.h:55
etl::rescale::operator()
TOutput operator()(TInput value) const
operator ()
Definition
rescale.h:69
functional.h
etl
bitset_ext
Definition
absolute.h:38
platform.h
etl::pair
pair holds two objects of arbitrary type
Definition
utility.h:164
etl::unary_function
Definition
functional.h:118
type_traits.h
include
etl
rescale.h
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