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# wcsmath.h

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    00001 /*============================================================================
    00002
    00003   WCSLIB 4.13 - an implementation of the FITS WCS standard.
    00004   Copyright (C) 1995-2012, Mark Calabretta
    00005
    00006   This file is part of WCSLIB.
    00007
    00008   WCSLIB is free software: you can redistribute it and/or modify it under the
    00009   terms of the GNU Lesser General Public License as published by the Free
    00010   Software Foundation, either version 3 of the License, or (at your option)
    00011   any later version.
    00012
    00013   WCSLIB is distributed in the hope that it will be useful, but WITHOUT ANY
    00014   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00015   FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
    00016   more details.
    00017
    00018   You should have received a copy of the GNU Lesser General Public License
    00019   along with WCSLIB.  If not, see <http://www.gnu.org/licenses/>.
    00020
    00021   Correspondence concerning WCSLIB may be directed to:
    00022     Internet email: mcalabre@atnf.csiro.au
    00023     Postal address: Dr. Mark Calabretta
    00024                     Australia Telescope National Facility, CSIRO
    00025                     PO Box 76
    00026                     Epping NSW 1710
    00027                     AUSTRALIA
    00028
    00029   Author: Mark Calabretta, Australia Telescope National Facility
    00030   http://www.atnf.csiro.au/~mcalabre/index.html
    00031   $Id: wcsmath.h,v 4.13.1.1 2012/03/14 07:40:37 cal103 Exp cal103 $
    00032 *=============================================================================
    00033 *
    00034 * Summary of wcsmath.h
    00035 * --------------------
    00036 * Definition of mathematical constants used by WCSLIB.
    00037 *
    00038 *===========================================================================*/
    00039
    00040 #ifndef WCSLIB_WCSMATH
    00041 #define WCSLIB_WCSMATH
    00042
    00043 #ifdef PI
    00044 #undef PI
    00045 #endif
    00046
    00047 #ifdef D2R
    00048 #undef D2R
    00049 #endif
    00050
    00051 #ifdef R2D
    00052 #undef R2D
    00053 #endif
    00054
    00055 #ifdef SQRT2
    00056 #undef SQRT2
    00057 #endif
    00058
    00059 #ifdef SQRT2INV
    00060 #undef SQRT2INV
    00061 #endif
    00062
    00063 #define PI 3.141592653589793238462643
    00064 #define D2R PI/180.0
    00065 #define R2D 180.0/PI
    00066 #define SQRT2 1.4142135623730950488
    00067 #define SQRT2INV 1.0/SQRT2
    00068
    00069 #ifdef UNDEFINED
    00070 #undef UNDEFINED
    00071 #endif
    00072
    00073 #define UNDEFINED 987654321.0e99
    00074 #define undefined(value) (value == UNDEFINED)
    00075
    00076 #endif /* WCSLIB_WCSMATH */