[Octave-bug-tracker] [bug #61812] Math constants (e.g. M_PI) are not part of C/C++ standard

[Markus Mützel]

Follow-up Comment #7, bug #61812 (project octave):

I was mainly concerned about public headers.

I didn't check our build system. But ideally we'd check that Octave is
compiled with GNU extensions (something like `-std=gnu++11` if not enabled by
default)...


Afaics, `atan` is not `constexpr`. See:
https://en.cppreference.com/w/cpp/header/cmath

I think it is a bug in GCC that it accepts that (invalid) syntax. I believe I
came across this before and it is (rightfully) failing with clang++. (But I
might be misremembering...)

    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?61812>

_______________________________________________
  Message sent via Savannah
  https://savannah.gnu.org/