在C++ Primer 4th P.38，对float和double做了以下的建议
Determining which floating-point type to use is easier: It is almost always right to use double. The loss of precission implicit in float is significant, whereas the cost of double precision calculations versus single precision is negligible. In fact, on some machines, double precision is faster than single.
Reference
C++ Primer 4th P.38
Determining which floating-point type to use is easier: It is almost always right to use double. The loss of precission implicit in float is significant, whereas the cost of double precision calculations versus single precision is negligible. In fact, on some machines, double precision is faster than single.
Reference
C++ Primer 4th P.38
本文章为转载内容，我们尊重原作者对文章享有的著作权。如有内容错误或侵权问题，欢迎原作者联系我们进行内容更正或删除文章。
