ln_types.h

/*
 *  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; 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *  
 *  Copyright (C) 2000 - 2005 Liam Girdwood  
 */

#ifndef _LN_TYPES_H
#define _LN_TYPES_H

#ifdef __cplusplus
extern "C" {
#endif

#if defined(_MSC_VER) || defined(__CYGWIN__) || defined(__MINGW32__) || defined( __BCPLUSPLUS__)  || defined( __MWERKS__)
#  if defined( LIBNOVA_STATIC )
#    define LIBNOVA_EXPORT
#  elif defined( LIBNOVA_SHARED )
#    define LIBNOVA_EXPORT   __declspec(dllexport)
#  else
#    define LIBNOVA_EXPORT
#  endif
#else
#  define LIBNOVA_EXPORT
#endif 

/* define some useful constants if they are not already defined */
#if(!defined(M_PI_2) && (!defined(_MSC_VER) || !defined(_USE_MATH_DEFINES)))
#define M_PI_2          1.5707963267948966192313216916398
#define M_PI_4          0.78539816339744830961566084581988
#define M_PI            3.1415926535897932384626433832795
#endif

/* sideral day length in seconds and days (for JD)*/
#define LN_SIDEREAL_DAY_SEC 86164.09
#define LN_SIDEREAL_DAY_DAY LN_SIDEREAL_DAY_SEC/86400

/* 1.1.2000 Julian Day & others */
#define JD2000          2451545.0
#define JD2050          2469807.50

#define B1900           2415020.3135
#define B1950           2433282.4235
        
struct ln_date
{
    int years;          
    int months;         
    int days;           
    int hours;          
    int minutes;        
    double seconds;     
};

struct ln_zonedate
{
    int years;          
    int months;         
    int days;           
    int hours;          
    int minutes;        
    double seconds;     
    long gmtoff;        
};

struct ln_dms
{
    unsigned short neg;         
    unsigned short degrees;     
    unsigned short minutes;     
    double seconds;             
};

struct ln_hms
{
    unsigned short hours;               
    unsigned short minutes;             
    double seconds;                             
};

struct lnh_equ_posn
{
    struct ln_hms ra;   
    struct ln_dms dec;  
};

struct lnh_hrz_posn
{
    struct ln_dms az;   
    struct ln_dms alt;  
};


struct lnh_lnlat_posn
{
    struct ln_dms lng; 
    struct ln_dms lat; 
};


struct ln_equ_posn
{
    double ra;  
    double dec; 
};

struct ln_hrz_posn
{
    double az;  
    double alt; 
};


struct ln_lnlat_posn
{
    double lng; 
    double lat; 
};


struct ln_helio_posn
{
        double L;       
        double B;       
        double R;       
};

struct ln_rect_posn
{
        double X;       
        double Y;       
        double Z;       
};

struct ln_gal_posn
{
        double l;       
        double b;       
};

struct ln_ell_orbit
{
        double a;       
        double e;       
        double i;       
        double w;       
        double omega;   
        double n;       
        double JD;      
};

struct ln_par_orbit
{
        double q;       
        double i;       
        double w;       
        double omega;   
        double JD;      
};

struct ln_hyp_orbit
{
        double q;       
        double e;       
        double i;       
        double w;       
        double omega;   
        double JD;      
};

struct ln_rst_time
{
        double rise;            
        double set;                     
        double transit;         
};

struct ln_nutation
{
        double longitude;       
        double obliquity;       
        double ecliptic;        
};

/* Definitions of POSIX structures for Win32. */
#ifdef __WIN32__

#include <time.h>

struct timeval
{
        time_t  tv_sec;         /* count of seconds since Jan. 1, 1970 */
        long    tv_usec;        /* and microseconds */
};

struct timezone
{
        int     tz_minuteswest; /* Minutes west of GMT */
        int     tz_dsttime;     /* DST correction offset */
};

#endif /* __WIN32__ */

#ifdef __cplusplus
};
#endif

#endif