Number of coarse steering vectors

Hi expert：

I am trying to understand the beam steering process used in People Counting Overhead project and found a mismatch between the code and the document.

In page 36 of 3D_people_counting_demo_implementation_guide.pdf, u_step=-2u_init/N_E. However the code in line 712 of RADARDEMO_aoaEst2DCaponBF is :

handle->raHeatMap_handle->azimSearchLen       =   (uint32_t) floor(divsp_i(2.f * fov0, (moduleConfig->rangeAngleCfg.searchStep))) + 1;

Is my understanding wrong or the above code?

Thanks