Python double into float32

Today, when dealing with Python data, I found that the imported Mat file type is double (the MATLAB default type is double). And the data I need to use is the float32 type. Finding the data did not find a suitable solution. Later, I tried, just to do the purpose of conversion. So write it down, and with the king, also hope to be able to criticize correct.

First we have to understand, float (single-precision specifier), double (double-precision descriptor). Single-precision 4 byte (32-bit) memory space with a value range of 3.4e-38~3.4e+38 and only seven digits valid digits. The double is a 8-byte (64-bit) memory space with a value range of 1.7e-308~1.7e+308, which provides 16-digit valid digits. And in the MATLAB single is to represent the precision. It can be implemented in Python by float32 type. (Note: In Python, you may not find a way to convert a matrix to float directly, possibly talents yourself). So my approach is:

In Matlab, the matrix type is first converted to single (A) type and saved. Opening in Python is the float32 type of data.