sign value

基本解释

isSigned() to determine if a parameter can hold signed numerical values.
isSigned()，用于确定参数是否可以保存有符号的数值。
According to K&R Second edition (the bible) the results are implementation-defined for right-shifts of signed values.
根据 K&安培； R第二版（圣经）结果是实现定义的符号值的右移。
MINIMUM refers to the smaller magnitude limit of a range of like-signed VALUEs; if the range includes both positive and negative VALUEs, the MINIMUM is implicitly zero.
最小值是指限制在一些有符号的数值范围内的较小值，如果范围内既包括正值和负值，那最小值就默认为零。