misc.c

/* 
** misc.h
** 1996/02/11
**
**
** Copyright 1996, Christopher Osburn, Lunar Outreach Services, 
**
** This program 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 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 Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with this program.  If not, see <http://www.gnu.org/licenses/>.
** 
**
** Miscellaneous routines for moon phase programs
**
*/

#include "moon.h"
#include <math.h>

extern double torad(double x)
/* convert x to radians */
{
  x = fmod(x, 360.0); /* normalize the angle */
  return ((x) * 0.01745329251994329576);
                    /* and return the result */
}