Remove local copy of avr-libc time lib.

[z180-stamp.git] / time / isLeap.c

diff --git a/time/isLeap.c b/time/isLeap.c
deleted file mode 100644 (file)
index 3c846aa..0000000
--- a/time/isLeap.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * (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: isLeap.c 2325 2013-04-02 21:22:16Z swfltek $ */
-
-/*
-    Return 1 if 'year' is a leap year, else 0.
-*/
-
-#include <stdlib.h>
-
-unsigned char
-is_leap_year(int year)
-{
-    div_t           d;
-
-    /* year must be divisible by 4 to be a leap year */
-    if (year & 3)
-        return 0;
-
-    /* If theres a remainder after division by 100, year is not divisible by 100 or 400 */
-    d = div(year, 100);
-    if (d.rem)
-        return 1;
-
-    /* If the quotient is divisible by 4, then year is divisible by 400 */
-    if ((d.quot & 3) == 0)
-        return 1;
-
-    return 0;
-}