1COMEDI_FROM_PHYSICAL(3)        Comedi reference        COMEDI_FROM_PHYSICAL(3)
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NAME

6       comedi_from_physical - convert physical units to sample using
7       calibration data
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SYNOPSIS

10       #include <comedilib.h>
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12       lsampl_t comedi_from_physical(double data,
13                                     const comedi_polynomial_t * conversion_polynomial);
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DESCRIPTION

16       Converts data given in physical units into Comedi's integer sample
17       values (lsampl_t, between 0 and maxdata — see comedi_get_maxdata). The
18       conversion_polynomial parameter is obtained from either
19       comedi_get_hardcal_converter or comedi_get_softcal_converter. The
20       allows non linear and board specific correction. The result will be
21       rounded using the C library's current rounding direction. No range
22       checking of the input data is performed. It is up to you to ensure your
23       data is within the limits of the output range you are using.
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RETURN VALUE

26       Comedi sample value corresponding to input physical value.
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AUTHORS

29       David Schleef <ds@schleef.org>
30           Author.
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32       Frank Mori Hess <fmhess@users.sourceforge.net>
33           Author.
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35       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
36           Author.
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38       Bernd Porr <tech@linux-usb-daq.co.uk>
39           Author.
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41       Ian Abbott <abbotti@mev.co.uk>
42           Author.
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44       Éric Piel <piel@delmic.com>
45           Author.
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48       Copyright © 1998-2003 David Schleef
49       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
50       Copyright © 2002-2003 Herman Bruyninckx
51       Copyright © 2012 Bernd Porr
52       Copyright © 2012 Ian Abbott
53       Copyright © 2012, 2015 Éric Piel
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55       This document is part of Comedilib. In the context of this document,
56       the term "source code" as defined by the license is interpreted as the
57       XML source.
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59       This library is free software; you can redistribute it and/or modify it
60       under the terms of the GNU Lesser General Public License as published
61       by the Free Software Foundation, version 2.1 of the License.
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63       This library is distributed in the hope that it will be useful, but
64       WITHOUT ANY WARRANTY; without even the implied warranty of
65       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
66       General Public License for more details.
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68       You should have received a copy of the GNU Lesser General Public
69       License along with this library; if not, write to the Free Software
70       Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
71       USA.
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76Comedi                            05/11/2017           COMEDI_FROM_PHYSICAL(3)
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