CL_FLT_MIN_EXP    158 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MIN_EXP      -125
CL_FLT_MIN_EXP    249 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MIN_EXP      -125