PVS-Studio warning V674 for Source SDK

#define  ON_EPSILON    0.1

void CPrediction::SetIdealPitch (....)
{
  int    step;
  ....
  step = floor_height[j] - floor_height[j-1];
  if (step > -ON_EPSILON && step < ON_EPSILON)
    continue;
  ....
}

This suspicious code was found in Source SDK project by PVS-Studio static code analyzer.
Warning message is:
V674 The '-0.1' literal of the 'double' type is compared to a value of the 'int' type. Consider inspecting the 'step > - 0.1' expression. Client (HL2) prediction.cpp 977

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/