sign value

基本解释

isSigned() to determine if a parameter can hold signed numerical values.
isSigned()，用於確定蓡數是否可以保存有符號的數值。
According to K&R Second edition (the bible) the results are implementation-defined for right-shifts of signed values.
根據 K&安培； R第二版（聖經）結果是實現定義的符號值的右移。
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號的數值範圍內的較小值，如果範圍內既包括正值和負值，那最小值就默認爲零。