Hello and happy New Year,
I stumbled upon a slightly weird problem with the current cross-compilers.
According to https://en.cppreference.com/w/cpp/numeric/math/fmax std::fmax
should be part of <cmath> for >= C++11.
However, if I try to use it, I sometimes get "error: 'fmax' is not a member of
'std'; did you mean 'max'?"
I do get the error when compiling the test file (see below) with
i386-rtems6-g++ and riscv-rtems6-g++, but for example not for arm-rtems6-g++.
If I use "fmax" instead of "std::fmax" the file compiles for all 3
architectures.
However, I have a library which uses the math functions with the namespace
qualifier, which I cannot change that easily.
Does someone know, what is the reason for that behavior (I guess it's related
to newlib?) and what a solution could look like?
Best regards,
Jan
PS: My test file looks like this:
#include <cmath>
double test(double a, double b)
{
return std::fmax(a, b);
}
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