nuttx/include/sys/sysmacros.h

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/****************************************************************************
* include/sys/sysmacros.h
*
* 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.
*
****************************************************************************/
#ifndef __INCLUDE_SYS_SYSMACROS_H
#define __INCLUDE_SYS_SYSMACROS_H
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define major(x) ((int)(0x00ff & ((x) >> 8)))
#define minor(x) ((int)(0xffff00ff & (x)))
#define makedev(maj, min) ((0xff00 & ((maj) << 8)) | (0xffff00ff & (min)))
#endif /* __INCLUDE_SYS_SYSMACROS_H */