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Diffstat (limited to 'ast/wcstrig.h')
| -rw-r--r-- | ast/wcstrig.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/ast/wcstrig.h b/ast/wcstrig.h new file mode 100644 index 0000000..36463bb --- /dev/null +++ b/ast/wcstrig.h @@ -0,0 +1,63 @@ +/*============================================================================= +* +* WCSLIB - an implementation of the FITS WCS proposal. +* Copyright (C) 1995-2002, Mark Calabretta +* +* This library is free software; you can redistribute it and/or modify it +* under the terms of the GNU Library General Public License as published +* by the Free Software Foundation; either version 2 of the License, or (at +* your option) any later version. +* +* 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 Library +* General Public License for more details. +* +* You should have received a copy of the GNU Library General Public License +* along with this library; if not, write to the Free Software Foundation, +* Inc., 51 Franklin Street,Fifth Floor, Boston, MA 02110-1301, USA +* +* Correspondence concerning WCSLIB may be directed to: +* Internet email: mcalabre@atnf.csiro.au +* Postal address: Dr. Mark Calabretta, +* Australia Telescope National Facility, +* P.O. Box 76, +* Epping, NSW, 2121, +* AUSTRALIA +* +* Author: Mark Calabretta, Australia Telescope National Facility +* $Id$ +*============================================================================= +* +* This version of wcstrig.h is based on the version in wcslib-2.9, but has +* been modified in the following ways by the Starlink project (e-mail: +* ussc@star.rl.ac.uk): +* - Support for non-ANSI C prototypes removed +* - Changed the name of the WCSLIB_TRIG macro to WCSLIB_TRIG_INCLUDED +* - Changed names of degrees trig functions to avoid clashes with +* wcslib. +*===========================================================================*/ + +#ifndef WCSLIB_TRIG_INCLUDED +#define WCSLIB_TRIG_INCLUDED + +#ifdef __cplusplus +extern "C" { +#endif + +double astCosd(const double); +double astSind(const double); +double astTand(const double); +double astACosd(const double); +double astASind(const double); +double astATand(const double); +double astATan2d(const double, const double); + +/* Domain tolerance for asin and acos functions. */ +#define WCSTRIG_TOL 1e-10 + +#ifdef __cplusplus +}; +#endif + +#endif /* WCSLIB_TRIG_INCLUDED */ |