C++ 学习笔记（2） —— float 和 double 的精度

SizeRangePrecision
4 bytes ±1.18 x 10-38 to ±3.4 x 1038 6-9 significant digits, typically 7
8 bytes ±2.23 x 10-308 to ±1.80 x 10308 15-18 significant digits, typically 16
80-bits (12 bytes) ±3.65 x 10-4951 to ±1.18 x 104932 18-21 significant digits
16 bytes ±3.36 x 10-4932 to ±1.18 x 104932 33-36 significant digits
posted @ 2016-03-14 17:33  赵正阳  阅读(468)  评论(0)  编辑  收藏  举报