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quantize.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_QUANTIZE_INCLUDED
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#define ETL_QUANTIZE_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 <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
TCompare = etl::less<TInput> >
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class
quantize
:
public
etl::unary_function
<TInput, TInput>
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{
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public
:
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//*****************************************************************
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// Constructor.
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//*****************************************************************
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quantize
(
const
TInput
*
p_thresholds_
,
const
TInput
*
p_quantizations_
,
size_t
n_quantizations_
,
TCompare
compare_
=
TCompare
())
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: p_thresholds(
p_thresholds_
)
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, p_quantizations(
p_quantizations_
)
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, n_levels(
n_quantizations_
- 1U)
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,
compare
(
compare_
)
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{
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}
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//*****************************************************************
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// operator ()
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//*****************************************************************
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TInput
operator ()
(
TInput
value)
const
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{
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for
(
size_t
i
= 0
UL
;
i
< n_levels; ++
i
)
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{
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if
(
compare
(value, p_thresholds[
i
]))
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{
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return
p_quantizations[
i
];
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}
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}
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return
p_quantizations[n_levels];
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}
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private
:
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const
TInput
*
const
p_thresholds;
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const
TInput
*
const
p_quantizations;
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const
size_t
n_levels;
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const
TCompare
compare
;
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};
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}
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#endif
etl::quantize
Quantize .
Definition
quantize.h:48
functional.h
etl
bitset_ext
Definition
absolute.h:38
platform.h
etl::compare
Definition
compare.h:51
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
quantize.h
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