4字节除4字节程序具有功能多、精度高、简短、运行速度快等特点，可用于求4字节倒数，求商的整数(结果为4字节)，求商的小数部分(结果为4字节)，调用两次即可求8字节商-4 bytes 4 bytes procedures in addition to multi-functional, high precision, short, fast, etc., can be used for 4-byte countdown, and the integral operators (the results for the 4-byte), and to the fractional part of (the results of 4 bytes), called twice for 8-byte to