Eyescale/vmmlib — pull request #13 by seifertm (2014-09-29 08:36:04+00:00)
Title: Missing definition of M_PI on MinGW targets.

When compiling projects that depend on vmmlib with MinGW64 (v3.2.0), the ``M_PI`` macro is not defined.
This patch defines ``M_PI`` in ``vmmlib/math.hpp`` after the inclusion of ``cmath``, where ``M_PI`` is usually defined in other compile environments.