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C51的INTRINS.H详解

2020年9月18日 14:06 阅读(382)

externvoid_nop_(void);空操作，相当于8051的NOP指令externbit_testbit_(bit);测试并清零位，相当于8051的JBC指令externunsign

extern void_nop_(void);//空操作，相当于8051的NOP指令
extern bit_testbit_ (bit);//测验并清零位，相当于8051的JBC指令
extern unsigned char _cror_(unsigned char, unsigned char); //字符循环右移
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);//字符循环左移
extern unsigned int_irol_(unsigned int,unsigned char);//整数循环左移
extern unsigned long _lrol_(unsigned long, unsigned char);//长整数循环左移
extern unsigned char _chkfloat_(float);//测验并回来源点数状况