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-rw-r--r--time/solar_noon.c57
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diff --git a/time/solar_noon.c b/time/solar_noon.c
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--- a/time/solar_noon.c
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-/*
- * (c)2012 Michael Duane Rice All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer. Redistributions in binary
- * form must reproduce the above copyright notice, this list of conditions
- * and the following disclaimer in the documentation and/or other materials
- * provided with the distribution. Neither the name of the copyright holders
- * nor the names of contributors may be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-/* $Id: solar_noon.c 2365 2013-04-27 15:32:59Z swfltek $ */
-
-/*
- Return the time of solar noon at the observers position
-*/
-
-#include <time.h>
-
-extern long __longitude;
-
-time_t
-solar_noon(const time_t * timer)
-{
- time_t t;
- long n;
-
- /* determine time of solar noon at the prime meridian */
- t = *timer % ONE_DAY;
- t = *timer - t;
- t += 43200L;
- t -= equation_of_time(timer);
-
- /* rotate to observers longitude */
- n = __longitude / 15L;
- t -= n;
-
- return t;
-
-}