pandegroup/openmm — pull request #756 by peastman (2014-12-18 19:27:52+00:00)
Title: Fixed uninitialized memory in variable step size integrators

The effect of this bug was that if you were using a variable step size integrator, and you queried the kinetic energy *before* taking the very first time step, it would return a wrong value (often nan or infinity).