OpenMesh.Core.Geometry.MathDefs

bool is_zero (T,Real)(T _a, Real _eps);

comparison operators with user-selected precision control

float flt_eps__ ;

*const*/ float flt_eps__ = 10*float.epsilon;

*const*/ double dbl_eps__ = 10*double.epsilon;

T sane_aarg (T)(T _aarg);

Trigonometry/angles - related

T angle (T)(T _cos_angle, T _sin_angle);

returns the angle determined by its cos and the sign of its sin result is positive if the angle is in [0:pi] and negative if it is in [pi:2pi]