83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
|
///\file
|
||
|
|
|
||
|
|
/******************************************************************************
|
||
|
|
The MIT License(MIT)
|
||
|
|
|
||
|
|
Embedded Template Library.
|
||
|
|
https://github.com/ETLCPP/etl
|
||
|
|
https://www.etlcpp.com
|
||
|
|
|
||
|
|
Copyright(c) 2014 John Wellbelove
|
||
|
|
|
||
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
of this software and associated documentation files(the "Software"), to deal
|
||
|
|
in the Software without restriction, including without limitation the rights
|
||
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
|
||
|
|
copies of the Software, and to permit persons to whom the Software is
|
||
|
|
furnished to do so, subject to the following conditions :
|
||
|
|
|
||
|
|
The above copyright notice and this permission notice shall be included in all
|
||
|
|
copies or substantial portions of the Software.
|
||
|
|
|
||
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
|
||
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
SOFTWARE.
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
#ifndef ETL_FIBONACCI_INCLUDED
|
||
|
|
#define ETL_FIBONACCI_INCLUDED
|
||
|
|
|
||
|
|
#include "platform.h"
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
///\defgroup fibonacci fibonacci
|
||
|
|
/// fibonacci<N> : Calculates the Nth Fibonacci value.
|
||
|
|
///\ingroup maths
|
||
|
|
|
||
|
|
namespace etl
|
||
|
|
{
|
||
|
|
//***************************************************************************
|
||
|
|
///\ingroup fibonacci
|
||
|
|
/// Defines <b>value</b> as the Nth Fibonacci number.
|
||
|
|
///\tparam N The number to find the Fibonacci value of.
|
||
|
|
//***************************************************************************
|
||
|
|
template <size_t N>
|
||
|
|
struct fibonacci
|
||
|
|
{
|
||
|
|
static ETL_CONSTANT size_t value = fibonacci<N - 1>::value + fibonacci<N - 2>::value;
|
||
|
|
};
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
// Specialisation for N = 1
|
||
|
|
//***************************************************************************
|
||
|
|
template <>
|
||
|
|
struct fibonacci<1>
|
||
|
|
{
|
||
|
|
static ETL_CONSTANT size_t value = 1UL;
|
||
|
|
};
|
||
|
|
|
||
|
|
//***************************************************************************
|
||
|
|
// Specialisation for N = 0
|
||
|
|
//***************************************************************************
|
||
|
|
template <>
|
||
|
|
struct fibonacci<0>
|
||
|
|
{
|
||
|
|
static ETL_CONSTANT size_t value = 0UL;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <size_t N>
|
||
|
|
ETL_CONSTANT size_t fibonacci<N>::value;
|
||
|
|
|
||
|
|
#if ETL_USING_CPP17
|
||
|
|
template <size_t N>
|
||
|
|
inline constexpr size_t fibonacci_v = fibonacci<N>::value;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|