39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* libdivecomputer
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*
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* Copyright (C) 2008 Jef Driesen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#ifndef UNITS_H
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#define UNITS_H
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#define POUND 0.45359237
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#define FEET 0.3048
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#define INCH 0.0254
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#define GRAVITY 9.80665
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#define ATM 101325.0
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#define BAR 100000.0
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#define FSW (ATM / 33.0)
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#define MSW (BAR / 10.0)
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#define PSI ((POUND * GRAVITY) / (INCH * INCH))
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#define CUFT (FEET * FEET * FEET)
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#endif /* UNITS_H */
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