Difference between revisions of "Common C, C++, FORTRAN Libraries"
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= Linear Algebra = | = Linear Algebra = | ||
| + | ==Eigen== | ||
| + | [http://eigen.tuxfamily.org Eigen] is linear algebra library that supports computing the eigenvalue and eigenvectors of real and complex matrices. It is relatively simple to use because it is a pure template library, and therefore does not require you to compile anything in the library to use it. All you need to do is download the library and tell your compiler where it is. | ||
| + | |||
| + | ===Using=== | ||
| + | Let's assume you have a C++ program called StationaryStateFinder that you | ||
| + | ===Downloading=== | ||
| + | Download the latest version of the library from http://eigen.tuxfamily.org. On the right side of the page, you should see "The latest stable release...". Click on the tar.bz2 (Linux and Mac), tar.gz (Linux and Mac), or zip (Windows) links. | ||
| + | |||
| + | ===Installing=== | ||
| + | To "install" eigen, you only need to unpack the archive file (tar.bz2, tar.gz, or zip) and then tell you compiler where you unpacked it. The following instructions will explain how to use the eigen library for a <em>single</em> project. It will not install the library system wide. | ||
| + | |||
| + | ===Unpacking=== | ||
| + | Let's assume you have a C++ program that you are | ||
== BLAS under Linux == | == BLAS under Linux == | ||
Revision as of 12:22, 23 March 2014
There are a number of common libraries for computational physics and numerical analysis. Here are a few links for tutorials and information for installation of commonly-used tools.
Contents
Linear Algebra
Eigen
Eigen is linear algebra library that supports computing the eigenvalue and eigenvectors of real and complex matrices. It is relatively simple to use because it is a pure template library, and therefore does not require you to compile anything in the library to use it. All you need to do is download the library and tell your compiler where it is.
Using
Let's assume you have a C++ program called StationaryStateFinder that you
Downloading
Download the latest version of the library from http://eigen.tuxfamily.org. On the right side of the page, you should see "The latest stable release...". Click on the tar.bz2 (Linux and Mac), tar.gz (Linux and Mac), or zip (Windows) links.
Installing
To "install" eigen, you only need to unpack the archive file (tar.bz2, tar.gz, or zip) and then tell you compiler where you unpacked it. The following instructions will explain how to use the eigen library for a single project. It will not install the library system wide.
Unpacking
Let's assume you have a C++ program that you are
BLAS under Linux
BLAS stands for "Basic Linear Algebra Subprograms". Originally written in FORTRAN in the late 70's, it is still used by many libraries to do "low level" linear algebra operations. It is still the standard by which the performance of all other linear algebra libraries are measured.
Linear Algebra in Linux (BLAS/LAPACK)
Setting up BLAS in Linux (yum-based systems)
Matrix Multiplication with BLAS and CBLAS
GSL BLAS Examples (such as matrix multiply)
Special Functions
The GSL also has calls for C and C++ for a variety of linear algebra functions found in BLAS and other packages.
The Boost Math Toolkit has several utilities for doing various types of mathematical operations including several special functions.
