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.

AUTHORS

       David Schleef <ds@schleef.org>
           Author.

       Frank Mori Hess <fmhess@users.sourceforge.net>
           Author.

       Herman Bruyninckx <Herman.Bruyninckx@mech.kuleuven.ac.be>
           Author.

       Bernd Porr <tech@linux-usb-daq.co.uk>
           Author.

       Ian Abbott <abbotti@mev.co.uk>
           Author.

       Éric Piel <piel@delmic.com>
           Author.

COPYRIGHT

       Copyright © 1998-2003 David Schleef
       Copyright © 2001-2003, 2005, 2008 Frank Mori Hess
       Copyright © 2002-2003 Herman Bruyninckx
       Copyright © 2012 Bernd Porr
       Copyright © 2012 Ian Abbott
       Copyright © 2012 Éric Piel

       This document is part of Comedilib. In the context of this document, the term "source
       code" as defined by the license is interpreted as the XML source.

       This library is free software; you can redistribute it and/or modify it under the terms of
       the GNU Lesser General Public License as published by the Free Software Foundation,
       version 2.1 of the License.

       This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
       without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU Lesser General Public License for more details.

       You should have received a copy of the GNU Lesser General Public License along with this
       library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
       Boston, MA 02111-1307 USA.