CL_FLT_MIN        161 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MIN          1.175494350822287507969e-38f
CL_FLT_MIN        252 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MIN          0x1.0p-126f