SR_API int sr_analog_to_float(const struct sr_datafeed_analog *analog,
float *buf);
-SR_API int sr_analog_float_to_string(float value, unsigned int digits,
- char **result);
SR_API int sr_analog_unit_to_string(const struct sr_datafeed_analog *analog,
char **result);
SR_API void sr_rational_set(struct sr_rational *r, int64_t p, uint64_t q);