* libs/libc/time/lib_isleapyear.c
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/clock.h>
* Pre-processor Definitions
****************************************************************************/
* Private Type Declarations
****************************************************************************/
* Private Function Prototypes
****************************************************************************/
* Public Constant Data
****************************************************************************/
* Public Data
****************************************************************************/
* Private Data
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* Private Functions
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* Public Functions
****************************************************************************/
* Name: clock_isleapyear
*
* Description:
* Return true if the specified year is a leap year
*
****************************************************************************/
int clock_isleapyear(int year)
{
return (year % 400) ? ((year % 100) ? ((year % 4) ? 0 : 1) : 0) : 1;
}