在Xcode中添加大功率值 [英] Adding large Power values in Xcode

问题描述

我是Objective C和iPhone开发的新手。

I am new to Objective C and iPhone development.

我正在使用基本计算器。我想在文本字段中添加一个大值。如何在Xcode中显示如下的大值：6.67543 x 10 ^ -34？
谢谢

I'm working with a basic calculator. I want to add a large value in text field. How can I display large values like this : 6.67543 x 10^ -34 in Xcode? Thank you

推荐答案

您可以使用NSNumberFormatterScientificStyle设置NSNumberFormatter并调用stringFromNumber ...但是，问题我我们希望支持的精确度需要一个专门的框架。可能有一个基于GNU MP Bignum库，但我不知道它。

You could set up a NSNumberFormatter with NSNumberFormatterScientificStyle and call stringFromNumber... However, the issue I think is going to be with the precision you are hoping to support requires a specialized framework. There might be one based on GNU MP Bignum library out there, but I don't know it off hand.

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