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Is there a tool that converts C++ code into fortran? Please state any possible deficiency of the tool you use.
I know it sounds silly but I do have a C++ code that calls a big Fortran code inside and I need to to use OpenMP. I am trying to keep the parallel region only inside Fortran (because there are many COMMON blocks and EQUIVALENCEs used) so I have to translate a few hundreds of lines of C++ functions to Fortran.
Depending on the compiler (such as the GNU compilers), you're actually able to compile C, C++, Fortran, etc. code together. This is so you don't actually have to translate or rewrite that code. C++ Forum Answer
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I can't search what does the logarithm code look like in C++? What the code of the logarithm function looks like in C++ in the library cmath? Exactly the code. I don't need to figure out how I can get the logarithm. I want to know how this algorithm works.
You would be very disappointed. On modern processors, the C++ compiler inserts the assembly instruction that obtains it from the floating-point ALU. There is no code.
That is implementation specific and therefore can vary from system to system.
Since there are several ways to compute a logarithm, a good book on this kind of algorithm is a good start.
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I am looking for a program that would read C++ source code, remove all unnecessary whitespace and replace all names so that the source code as measured by the number of bytes is as short as possible. I do not care about the obfuscation, size is all that matters.
I am solving this competition programming problem and the source code size is set at 2000 bytes.
For automatic condensing, check out creduce for C and C++ here
I'm not sure how smart it is but having a good design in your code, managing class explosion, etc. helps far more since I doubt any automatic whitespace trimmer would be as effective as rethinking and refactoring out poorly written code.
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How might one implement data frame in R, Python, and other languages using C++?
In general, data.frame solves a problem which is solved fundamentally differently in C++ (and other languages) – namely via class hierarchies, or, in the simplest case, via a vector of tuples.
Since you haven’t given specifics it’s hard to know what exactly you are after but if it’s ease of computation, Armadillo is a good linear algebra library for C++ (one among many). I haven’t yet found a good statistics framework for C++ – I suggest simply sticking with R for that.
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I'm planning to write a simple interpreter ( like TI-BASIC language for TI-89 ) or compiler ( C compiler ) using C++. I'm currently taking a course about programming languages, and learning the basic of BNF, EBNF. I wonder is it good enough to start on this project? In addition, could anyone know some good books about this area? Any feedback would be greatly appreciated.
Thanks,
The Dragon Book is a must read if you want to write a compiler.
Everyone I know rants and raves about Modern Compiler Construction in C, although the Java version usually gets more credit. However if you want a more C++ focused book you can't go wrong with Writing Compiler and Interpreters.
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Can anyone point out a good C++ library that can do 2D numerical integration. It needs to be able to accept a 2D array of known values, and the spacing between the points can be assumed to be constant (for a start).
It is preferable that it have a license which allows modifying the code as needed.
It's actually a C library, but if the GPL licensing terms work for you try:
http://www.gnu.org/software/gsl/
You will want to check out the Monte Carlo integration options outlined here:
http://www.gnu.org/software/gsl/manual/html_node/Monte-Carlo-Integration.html
This Fortran library is easy to link to from C++ and is in public domain:
http://gams.nist.gov/cgi-bin/serve.cgi/Module/CMLIB/ADAPT/2967
It's single precision but it's quite easy to modify the sources (get "full sources" and go through every function) to switch to double precision.
http://itpp.sourceforge.net/current/
Try this. It can do what you ask for and more! And you can modify the code as much as you like.
I've read somewhere that you can extract libraries out of GNU Octave's code and use the C++ code in your own applications. I'm not sure if that's an easy task, but you can give it a try if you have the time.