157 lines
4.5 KiB
C++
157 lines
4.5 KiB
C++
///\file
|
|
|
|
/******************************************************************************
|
|
The MIT License(MIT)
|
|
|
|
Embedded Template Library.
|
|
https://github.com/ETLCPP/etl
|
|
https://www.etlcpp.com
|
|
|
|
Copyright(c) 2023 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_MATH_INCLUDED
|
|
#define ETL_MATH_INCLUDED
|
|
|
|
#include "platform.h"
|
|
|
|
#if ETL_NOT_USING_STL && defined(ETL_COMPILER_ARM5) && !defined(__USE_C99_MATH)
|
|
// Required for nan, nanf, nanl
|
|
#define __USE_C99_MATH
|
|
#endif
|
|
|
|
#include <float.h>
|
|
#include <math.h>
|
|
|
|
#include "limits.h"
|
|
#include "type_traits.h"
|
|
|
|
namespace etl
|
|
{
|
|
//***************************************************************************
|
|
// is_nan
|
|
//***************************************************************************
|
|
#if ETL_USING_CPP11 && !defined(ETL_NO_CPP_NAN_SUPPORT)
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_nan(T value)
|
|
{
|
|
return fpclassify(value) == FP_NAN;
|
|
}
|
|
#else
|
|
#include "private/diagnostic_float_equal_push.h"
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_nan(T value)
|
|
{
|
|
return (value != value);
|
|
}
|
|
#include "private/diagnostic_pop.h"
|
|
#endif
|
|
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_integral<T>::value, bool>::type
|
|
is_nan(T)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
//***************************************************************************
|
|
// is_infinity
|
|
//***************************************************************************
|
|
#if ETL_USING_CPP11 && !defined(ETL_NO_CPP_NAN_SUPPORT)
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_infinity(T value)
|
|
{
|
|
return fpclassify(value) == FP_INFINITE;
|
|
}
|
|
#else
|
|
#include "private/diagnostic_float_equal_push.h"
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_infinity(T value)
|
|
{
|
|
return ((value == etl::numeric_limits<T>::infinity()) ||
|
|
(value == -etl::numeric_limits<T>::infinity()));
|
|
}
|
|
#include "private/diagnostic_pop.h"
|
|
#endif
|
|
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_integral<T>::value, bool>::type
|
|
is_infinity(T)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
//***************************************************************************
|
|
// is_zero
|
|
//***************************************************************************
|
|
#if ETL_USING_CPP11 && !defined(ETL_NO_CPP_NAN_SUPPORT)
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_zero(T value)
|
|
{
|
|
return fpclassify(value) == FP_ZERO;
|
|
}
|
|
#else
|
|
#include "private/diagnostic_float_equal_push.h"
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type
|
|
is_zero(T value)
|
|
{
|
|
return value == 0;
|
|
}
|
|
#include "private/diagnostic_pop.h"
|
|
#endif
|
|
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
typename etl::enable_if<etl::is_integral<T>::value, bool>::type
|
|
is_zero(T value)
|
|
{
|
|
return (value == 0);
|
|
}
|
|
|
|
//***************************************************************************
|
|
// is_exactly_equal
|
|
//***************************************************************************
|
|
#include "private/diagnostic_float_equal_push.h"
|
|
template <typename T>
|
|
ETL_CONSTEXPR
|
|
bool is_exactly_equal(T value1, T value2)
|
|
{
|
|
return value1 == value2;
|
|
}
|
|
#include "private/diagnostic_pop.h"
|
|
}
|
|
|
|
#endif
|