Embedded Template Library
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ratio.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) 2016 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_RATIO_INCLUDED
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#define ETL_RATIO_INCLUDED
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#include "
platform.h
"
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#include <stddef.h>
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#include <stdint.h>
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namespace
etl
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{
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template
<
size_t
NUM,
size_t
DEN = 1UL>
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struct
ratio
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{
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static
ETL_CONSTANT
intmax_t
num =
NUM
;
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static
ETL_CONSTANT
intmax_t
den =
DEN
;
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};
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template
<
size_t
NUM,
size_t
DEN>
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ETL_CONSTANT
intmax_t
ratio<NUM, DEN>::num
;
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template
<
size_t
NUM,
size_t
DEN>
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ETL_CONSTANT
intmax_t
ratio<NUM, DEN>::den
;
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#if INT_MAX > INT32_MAX
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typedef
ratio<1, 1000000000000000000000000>
yocto
;
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typedef
ratio<1, 1000000000000000000000>
zepto
;
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typedef
ratio<1, 1000000000000000000>
atto
;
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typedef
ratio<1, 1000000000000000>
femto
;
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typedef
ratio<1, 1000000000000>
pico
;
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#endif
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#if (INT_MAX >= INT32_MAX)
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typedef
ratio<1, 1000000000>
nano
;
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typedef
ratio<1, 1000000>
micro
;
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#endif
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#if (INT_MAX >= INT16_MAX)
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typedef
ratio<1, 1000>
milli
;
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typedef
ratio<1, 100>
centi
;
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typedef
ratio<1, 10>
deci
;
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typedef
ratio<10, 1>
deca
;
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typedef
ratio<100, 1>
hecto
;
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typedef
ratio<1000, 1>
kilo
;
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#endif
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#if (INT_MAX >= INT32_MAX)
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typedef
ratio<1000000, 1>
mega
;
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typedef
ratio<1000000000, 1>
giga
;
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#endif
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#if INT_MAX > INT32_MAX
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typedef
ratio<1000000000000, 1>
tera
;
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typedef
ratio<1000000000000000, 1>
peta
;
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typedef
ratio<1000000000000000000, 1>
exa
;
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typedef
ratio<1000000000000000000000, 1>
zetta
;
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typedef
ratio<1000000000000000000000000, 1>
yotta
;
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#endif
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typedef
ratio<355, 113>
ratio_pi
;
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typedef
ratio<239, 169>
ratio_root2
;
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typedef
ratio<326, 120>
ratio_e
;
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}
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#endif
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etl
bitset_ext
Definition
absolute.h:38
etl::ratio_pi
ratio< 355, 113 > ratio_pi
An approximation of PI to 6 digits.
Definition
ratio.h:93
etl::ratio_e
ratio< 326, 120 > ratio_e
An approximation of e.
Definition
ratio.h:99
etl::ratio_root2
ratio< 239, 169 > ratio_root2
An approximation of root 2.
Definition
ratio.h:96
platform.h
etl::pair
pair holds two objects of arbitrary type
Definition
utility.h:164
etl::ratio
Definition
ratio.h:46
include
etl
ratio.h
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