extern void
bit
unsigned char _cror_
of a characterextern unsigned int
unsigned long _lror_
unsigned char _crol_
unsigned int
integerextern unsigned long _lrol_
unsigned char _chkfloat_(float);
Keywords：C51 INTRINS
Reference address：Detailed explanation of C51's INTRINS.H
bit
unsigned char _cror_
of a characterextern unsigned int
unsigned long _lror_
unsigned char _crol_
unsigned int
integerextern unsigned long _lrol_
unsigned char _chkfloat_(float);
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