Wrong magnetometer values by driver LSM9DS1.

Hello.
I have a questions about output values for drivers MPU9250 and LSM9DS1.
Accelerometers values in both sensors is multipliers of g.
Gyroscopes values in both sensors is dps. But in drivers values conver to rps (why?).
But magnetometers is differ in these sensors. For MPU9250 values is µT and for LSM9DS1 is gauss.
In driver MPU9250:
_mx = bit_data[0] * magnetometer_ASA[0];
where magnetometer_ASA
magnetometer_ASA[i] = ((data - 128) / 256 + 1) * Magnetometer_Sensitivity_Scale_Factor;
Ok. We have a value.
But in driver LSM9DS1:
_mx = 100.0 * ((float)bit_data[0] * mag_scale);
What is the meaning of the multiplier 100.0? By ((float)bit_data[0] * mag_scale) we have a right value or no? This sensor have a gauss unit.
µT = 1e-6 T = 1e-2 Gs, if LSM9DS1 sensor had a unit of measurement for the µT, then it would be obvious. But this sensor have a gauss unit… Sounds like a issue. Sorry if not right.

Thank you in advance for your help.

P.S.
Datasheets
http://www.st.com/content/ccc/resource/technical/document/datasheet/1e/3f/2a/d6/25/eb/48/46/DM00103319.pdf/files/DM00103319.pdf/jcr:content/translations/en.DM00103319.pdf
https://www.invensense.com/wp-content/uploads/2015/02/PS-MPU-9250A-01-v1.1.pdf

[gmsanchez]

I think the multiplication by 100.0 is made to convert the measured Gauss from the LSM9DS1 to µT. In that way, the driver makes both the MPU9250 and the LSM9DS1 report the magnetometer values in the same units (µT)