CL_DBL_EPSILON    173 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_DBL_EPSILON      2.220446049250313080847e-16
CL_DBL_EPSILON    264 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_DBL_EPSILON      0x1.0p-52