There are some other threads about math.h but they were about forgetting to include it, but I do include it and I still get error: 'PI' was not declared in this scope.
Sure I could define it myself, but how can this be???
There are some other threads about math.h but they were about forgetting to include it, but I do include it and I still get error: 'PI' was not declared in this scope.
Sure I could define it myself, but how can this be???
In Unix/Linux’s /usr/include/math.h it’s M_PI.
Thanks @psb777, M_PI works 
I wonder why it seems impossible to have ONE standard - grrrrr 