CL_FLT_MAX_EXP    156 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MAX_EXP      +128
CL_FLT_MAX_EXP    247 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_FLT_MAX_EXP      +128