Undeclared FP_NAN, FP_INFINITE and FP_ZERO

[jputcu]

With the latest etl-20.38.7 I get the following compilation errors on avr-g++-7.3(Microchip):

C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h: In function 'constexpr typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type etl::is_nan(T)':
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h:58:33: error: 'FP_NAN' was not declared in this scope
     return fpclassify(value) == FP_NAN;
                                 ^~~~~~
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h:58:33: note: suggested alternative: 'PINA'
     return fpclassify(value) == FP_NAN;
                                 ^~~~~~
                                 PINA
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h: In function 'constexpr typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type etl::is_infinity(T)':
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h:89:33: error: 'FP_INFINITE' was not declared in this scope
     return fpclassify(value) == FP_INFINITE;
                                 ^~~~~~~~~~~
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h:89:33: note: suggested alternative: 'INFINITY'
     return fpclassify(value) == FP_INFINITE;
                                 ^~~~~~~~~~~
                                 INFINITY
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h: In function 'constexpr typename etl::enable_if<etl::is_floating_point<T>::value, bool>::type etl::is_zero(T)':
C:/Users/joris/.conan2/p/etl187c506cfdd84/p/include/etl/math.h:121:33: error: 'FP_ZERO' was not declared in this scope
     return fpclassify(value) == FP_ZERO;
                                 ^~~~~~~

I already use the following compiler flags: -DETL_NO_CPP_NAN_SUPPORT -DETL_NO_HUGE_VAL_SUPPORT -DETL_NO_STL -DETL_TARGET_DEVICE_GENERIC -DETL_TARGET_OS_NONE

[jwellbelove]

Does this work for you?

etl-797-Undeclared-FP_NAN,-FP_INFINITE-and-FP_ZERO.patch

[jputcu]

Yes, that fixes the issue

[jwellbelove]

Fixed 20.38.8