英文:
How is double hexDouble = 0xf.8p3 calculated as 15.5 * 2^3 ? (f.8 == 15.5 ??)
问题
public class Main
{
public static void main(String[] args) {
double hexDouble = 0xf.8p3;
System.out.println(hexDouble);
}
}
double hexDouble = 0xf.8p3; 被计算为 15.5 * 2^3 吗？（f.8 == 15.5 ??）
f.8，读作 15.8 吗？
请告诉我……
英文:
public class Main
{
public static void main(String[] args) {
double hexDouble = 0xf.8p3;
System.out.println(hexDouble);
}
}
How is double hexDouble = 0xf.8p3 calculated as 15.5 * 2^3 ? (f.8 == 15.5 ??)
Is f.8, read as 15.8 ??
Please tell me .......
答案1
得分: 3
f 是 15 * 16^0 = 15，而 8 是 8 * 16^-1 = 0.5，所以 f.8 (十六进制) 对应 15.5 (十进制)。
英文:
f is 15 * 16<sup>0</sup> = 15, and 8 is 8 * 16<sup>-1</sup> = 0.5, so f.8 (hex) is 15.5 (decimal).
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