Global bladerf_set_gain (struct bladerf *dev, bladerf_channel ch, bladerf_gain gain): The gain ranges are not shifted to account for external accessories, such as amplifiers and LNAs.
Page libbladeRF 2.0 Release Notes: Issue #577: Using printf() with a bladerf_frequency or bladerf_timestamp currently require knowing that they are actually uint64_t, e.g. printf("the frequency is %" PRIu64 " Hz\\n", freq);.