HEX FIEND FOR PC CODE

Under gcc on Windows, data types* have the following values: Std ::cout << 'Size of int32_t: ' << sizeof( int32_t) << std ::endl Std ::cout << 'Size of long: ' << sizeof( long) << std ::endl Std ::cout << 'Size of long int: ' << sizeof( long int) << std ::endl Std ::cout << 'Size of int: ' << sizeof( int) << std ::endl Std ::cout << 'Size of float: ' << sizeof( float) << std ::endl Std ::cout << 'Size of long double: ' << sizeof( long double) << std ::endl Std ::cout << 'Size of double: ' << sizeof( double) << std ::endl #include // Way to bundle C++ with R, replace with normal C++ header #include // ] I coded up a straight forward primitive data comparison file:

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With this being said, I narrowed it down after several bits of running the code on my Windows machine and then running it on OS X to being related to the data types I was using. The other part is I wanted to emphasis that long by default is associated with int. Part of the reason for that was the original code showed long as the primitive type. When I started this section, it might have seemed odd that I wrote the data type as a long for int instead of long int. Thinking it was just a corrupted file, I went back to try to demo it again.

So, when I went back to my Windows development machine, I couldn’t replicate it at all. The worst part is the bug came up as I was doing a live action demo on OS X. When a record format contained long, the results were really, really odd. Only IMU binary record formats that used double exclusively were able to be loaded. I was able to easily recover the data within the matrix. On Windows, everything just “worked” on the C++ port. The binary record format was either all double or a double and 6 longs for int. The entire IMU function is available on GitHub for you to peruse or use in your standalone applications per the LICENSE. The later was very problematic as it related to cross-platform deployment. The main differences between the two versions settled around how I structured the IMU data type and, as you guessed it, how the binary file was read. The function was easily ported from MATLAB into C++. Instead, you should seek out a binary file editor (Windows: Hexplorer, OS X: Hex Fiend, Linux: xxd -b shell ) Conversion from MATLAB to C++ To view the files, you really cannot use your traditional IDE since more often than not they will try to convert file encoding into UTF-8 or Windows ISO. Binary 1-0īinary file formats are a bit different than an ASCII format, which is what we are accustom to seeing. Furthermore, I wanted to embed it within the gmwm R package that provides a method for modeling IMU error processes. What I worked on was converting the code from MATLAB to C++, specifically for use with the Armadillo C++ Matrix Library. The scripts goal was to read a binary output file from an Inertial Measurement Unit (IMU) into a MATLAB matrix. A while ago, I was given a binary file reading script written using MATLAB.

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