Function sys_mem_blocks_is_region_free 

pub unsafe extern "C" fn sys_mem_blocks_is_region_free(
    mem_block: *mut sys_mem_blocks,
    in_block: *mut c_void,
    count: usize,
) -> i32

@brief check if the region is free

@param[in] mem_block Pointer to memory block object. @param[in] in_block Address of the first block to check @param[in] count Number of blocks to check.

@retval 1 All memory blocks are free @retval 0 At least one of the memory blocks is taken