这句计算year的实际值，存放在tm_year中的数据并非直接是记年。说明info中的tm_year的记年是从1900年开始的，如果info->tm_year=0，则代表1900年。
这tm_year 场相对于1900年 全部 符合POSIX的平台,而不仅仅是MacOS。 这struct tm 专为解析,显示和操纵人类可读日期而设计。创建时,日期通常是编写的,甚至在没有本年度“ 19”部分的情况下存储,而Y2K的问题约为25年。因此, tm_year 直接可打印为两个数字,通过使其相对于1900年,当时显然显然是合理的。 UNIX时...
1900年1月1日为标准，获取时间指离这个时间的间隔
uint16 tm_year;//年 从1900 年算起至今的年数，注意:DS1302,PCF8563的year范围都是(0~99)，程序...
TMIN None 25–50y 1900–2016*** peak = 42y None None DTR None None None None Note: Each entry shows cycles that achieve global significance (p < .1); their transient behaviours; and the band as well as peak period of significance. Only cycles with peak periods <45 years are ...
Letters to editor[United States Hydrographic Office magnetic variation and dip chart for 1900]doi:10.1029/TM003i002p00087-03Photographic reproductions of plates in Lamont's Handbuch des Erdmagnetismus (1849).—Professor Max Eschenhagen, in charge of the Potsdam Magnetic Observatory, informs the ...
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Johan August Udden was the "father of sedimentology" in North America, although during his 49-year career he made contributions in stratigraphy, areal geology, eolian processes, till in the upper Mississippi valley, and other topics. He ... EF Mcbride - Springer Netherlands 被引量: 2发表: 19...
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