comedi_from_physical — convert physical units to sample using calibration data
#include <comedilib.h>
lsampl_t comedi_from_physical( | double data, |
const comedi_polynomial_t * conversion_polynomial); |
Converts data given in physical units into Comedi's
integer sample values
(lsampl_t, between 0 and maxdata —
see comedi_get_maxdata).
The conversion_polynomial
parameter is obtained from either
comedi_get_hardcal_converter or
comedi_get_softcal_converter. The allows non linear and board specific
correction.
The result will be rounded
using the C library's current rounding direction.
No range checking of the input
data is performed. It is up to you to ensure
your data is within the limits of the output range you are using.