CL_FLT_EPSILON    162 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_EPSILON      0x1.0p-23f
CL_FLT_EPSILON    253 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_EPSILON      0x1.0p-23f