CL_M_LN2_F        192 3rdparty/include/opencl/1.2/CL/cl_platform.h #define  CL_M_LN2_F         0.69314718246460f
CL_M_LN2_F        283 3rdparty/include/opencl/1.2/CL/cl_platform.h #define  CL_M_LN2_F         0.69314718246460f