defs.h

/******************************************************************************
 *
 * Project:  OpenCPN
 * Purpose:  Climatology Plugin
 * Author:   Sean D'Epagnier
 *
 ***************************************************************************
 *   Copyright (C) 2013 by Sean D'Epagnier                                 *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.             *
 ***************************************************************************
 */


#ifdef __MSVC__

#include <float.h>
#include <iostream>
#include <limits>

# if !defined(M_PI)
# define M_PI		3.14159265358979323846	/* pi */
# endif

# if !defined(NAN)
# define NAN std::numeric_limits<double>::quiet_NaN ()
# endif

# if !defined(INFINITY)
# define INFINITY std::numeric_limits<double>::infinity ()
# endif

#define isnan _isnan
#define isinf(x) (!_finite(x) && !_isnan(x))

inline double trunc(double d){ return (d>0) ? floor(d) : ceil(d) ; }
inline double round(double n) { return n < 0.0 ? ceil(n - 0.5) : floor(n + 0.5); }

# if !defined(snprintf)
# define snprintf _snprintf
# endif
#define vsnprintf _vsnprintf
#define strcasecmp _stricmp
#define strncasecmp _strnicmp

#define strtok_r strtok_s

#endif

static inline double square(double x) { return x*x; }

static inline double rad2deg(double radians)
{
  return 180.0 * radians / M_PI;
}

static inline double positive_degrees(double degrees)
{
    while(degrees < 0)
        degrees += 360;
    while(degrees >= 360)
        degrees -= 360;
    return degrees;
}