comedi_to_phys
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## Name

comedi_to_phys — convert sample to physical units

## Synopsis

    #include <comedilib.h>

`double comedi_to_phys(` | lsampl_t data,
| comedi_range * range,
| lsampl_t maxdata`)`;

## Description

Converts parameter `data` given in sample values (lsampl_t, between `0` and `maxdata`) into physical units (double). The parameter `range` represents the conversion information to use, and the parameter `maxdata` represents the maximum possible data value for the channel that the data was read. The mapping between physical units is linear and assumes ideal converter characteristics.

Conversion of endpoint sample values, that is, sample values equal to `0` or `maxdata`, is affected by the Comedilib out-of-range behavior (see function `comedi_set_global_oor_behavior`). If the out-of-range behavior is set to `COMEDI_OOR_NAN`, endpoint values are converted to `NAN`. If the out-of-range behavior is set to `COMEDI_OOR_NUMBER`, the endpoint values are converted similarly to other values.

If there is an error, `NAN` is returned.

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