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并不是说g++就一定要这么处理才能过

Posted by daofeng at 2005-05-23 13:42:02 on Problem 1473
In Reply To:但我一点处理都不做直接让G++编译怎么就过了 Posted by:frkstyc at 2005-05-23 12:56:24 
大多数时候不会出现这样的问题
计算方法、运算顺序都会影响精度

有的程序误差小于1e-8,但是在0的时候正好计算出来-1e-9,如果不处理的话，答案就错了
有的程序精度只能到1e-6,不过在0的时候计算出来的值都是大于0的，所以不处理也能对

所以过了的程序不一定精度就好， 没过的程序也不一定精度就差
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