c51中實現迴圈左移、右移的庫函式:
#include
unsigned char _crol_ (
unsigned char c, /* character to rotate left */
unsigned char b); /* bit positions to rotate */
unsigned char _cror_ (unsigned char, unsigned char);
unsigned int _iror_ (unsigned int, unsigned char);
unsigned long _lror_ (unsigned long, unsigned char);
unsigned char _crol_ (unsigned char, unsigned char);
unsigned int _irol_ (unsigned int, unsigned char);
unsigned long _lrol_ (unsigned long, unsigned char)
自己實現同樣的功能:
unsigned char crol(unsigned char c, unsigned b)
unsigned char cror(unsigned char c, unsigned b)
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