#ifndef PYTHONIC_INCLUDE_MATH_PI_HPP #define PYTHONIC_INCLUDE_MATH_PI_HPP PYTHONIC_NS_BEGIN namespace math { // see https://meetingcpp.com/blog/items/cpp-and-pi.html double constexpr pi = 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651e+00; } PYTHONIC_NS_END #endif