intrins.h头文件

/*--------------------------------------------------------------------------
INTRINS.H


Intrinsic functions for C51.
Copyright (c) 1988-2004 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.
--------------------------------------------------------------------------*/


#ifndef __INTRINS_H__
#define __INTRINS_H__


extern void          _nop_     (void);
extern bit           _testbit_ (bit);            //相当于JBC bitvar测试该位变量并跳转同时清除。
extern unsigned char _cror_    (unsigned char, unsigned char);     //将char型变量循环向右移动指定位数后返回
extern unsigned int  _iror_    (unsigned int,  unsigned char);        //整数循环右移
extern unsigned long _lror_    (unsigned long, unsigned char);    //长整数循环右移
extern unsigned char _crol_    (unsigned char, unsigned char);    //将char型变量循环向左移动指定位数后返回
extern unsigned int  _irol_    (unsigned int,  unsigned char);
extern unsigned long _lrol_    (unsigned long, unsigned char);
extern unsigned char _chkfloat_(float);
extern void          _push_    (unsigned char _sfr);
extern void          _pop_     (unsigned char _sfr);


#endif