CL_DBL_MANT_DIG   165 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_DBL_MANT_DIG     53
CL_DBL_MANT_DIG   256 3rdparty/include/opencl/1.2/CL/cl_platform.h #define CL_DBL_MANT_DIG     53