如何在MATLAB中知道变量的大小 [英] How to know the size of a variable in MATLAB

问题描述

我在MATLAB中有变量，我已经使用class()检查了它们的类，但我也想知道它们在内存中的大小.更准确地说，我知道它们是double类型的，并且我想确保它们是32位double而不是64位.

I have variables in MATLAB, I've checked their class using class() but I also want to know the size that they take in the memory. More accurately, I know that they are of double type, and I want to make sure that they are 32-bit double and not 64-bit.

我正在使用的MATLAB版本是R2009b.

The version of the MATLAB I'm using is R2009b.

推荐答案

您可以使用谁获得一组结构数组，这些结构除其他外描述了每个变量的字节大小.

You can use whos to obtain an array of structures that describe, amongst other things, the size in bytes of each variable.

请注意，根据定义，double是64位！

Note that a double is, by definition, 64-bit!

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