NumPy style arrays for C++? [closed]

by

Here are several free software that may suit your needs.

  1. The GNU Scientific Library is a GPL software written in C. Thus, it has a C-like allocation and way of programming (pointers, etc.). With the GSLwrap, you can have a C++ way of programming, while still using the GSL. GSL has a BLAS implementation, but you can use ATLAS instead of the default CBLAS, if you want even more performances.

  2. The boost/uBLAS library is a BSL library, written in C++ and distributed as a boost package. It is a C++-way of implementing the BLAS standard. uBLAS comes with a few linear algebra functions, and there is an experimental binding to ATLAS.

  3. eigen is a linear algebra library written in C++, distributed under the MPL2 license (starting from version 3.1.1) or LGPL3/GPL2 (older versions). It’s a C++ way of programming, but more integrated than the two others (more algorithms and data structures are available). Eigen claims to be faster than the BLAS implementations above, while not following the de-facto standard BLAS API. Eigen does not seem to put a lot of effort on parallel implementation.

  4. Armadillo is LGPL3 library for C++. It has binding for LAPACK (the library used by numpy). It uses recursive templates and template meta-programming, which is a good point (I don’t know if other libraries are doing it also?).

  5. xtensor is a C++ library that is BSD licensed. It offers A C++ API very similar to that of NumPy. See https://xtensor.readthedocs.io/en/latest/numpy.html for a cheat sheet.

These alternatives are really good if you just want to get data structures and basic linear algebra. Depending on your taste about style, license or sysadmin challenges (installing big libraries like LAPACK may be difficult), you may choose the one that best suits your needs.

More Related Contents:

  1. Dynamic memory allocation of array in C & C++
  2. Range-based for loop on a dynamic array?
  3. Pointer-to-pointer dynamic two-dimensional array
  4. how to return numpy.array from boost::python?
  5. Linear index upper triangular matrix
  6. C++: Using for loop I need to take infinite values of a point using arrays. How can I take values of point [ ] until 2 points of are equal
  7. Finding maximum value in Python vs. C++
  8. Segmentation fault on large array sizes
  9. Why do C and C++ compilers allow array lengths in function signatures when they’re never enforced?
  10. Is there a max array length limit in C++?
  11. determine size of array if passed to function
  12. Why do C and C++ support memberwise assignment of arrays within structs, but not generally?
  13. C++ pass an array by reference
  14. Why does a large local array crash my program, but a global one doesn’t? [duplicate]
  15. How to map the indexes of a matrix to a 1-dimensional array (C++)?
  16. How does the range-based for work for plain arrays?
  17. standard conversions: Array-to-pointer conversion
  18. C++ expected constant expression
  19. Why does gcc allow char array initialization with string literal larger than array?
  20. How do I declare an array of objects whose class has no default constructor?
  21. when do we need to pass the size of array as a parameter
  22. Variable length arrays (VLA) in C and C++
  23. C++ Reverse Array
  24. Convert Eigen Matrix to C array
  25. Converting between C++ std::vector and C array without copying
  26. array decay to pointer and overload resolution
  27. Interfacing C++11 array with Cython
  28. Concatenate char arrays in C++
  29. Reverse String C++ using char array
  30. Is this the best way to add an extra dimension to a numpy array in one line of code?

Leave a Comment