Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
IT++
open-in-new
<p>IT++ is a <a href="/facts/C%252B%252B/Et0F2qn9">C++</a> library of <a href="/facts/C%252B%252B_classes/1rWoasWM">classes</a> and functions for <a href="/facts/Linear_algebra/8VaB4VWk">linear algebra</a>, <a href="/facts/Numerical_optimization/oRn8Iv5I">numerical optimization</a>, <a href="/facts/Signal_processing/Npaja6zb">signal processing</a>, communications, and <a href="/facts/Statistics/DNPsKGYU">statistics</a>. It is being developed by researchers in these areas and is widely used by researchers, both in the communications industry and universities. The IT++ library originates from the former Department of Information Theory at the Chalmers University of Technology, Gothenburg, Sweden. </p><p>The kernel of the IT++ library is <a href="/facts/Template_(C%252B%252B)/TXEqGy7R">templated</a> vector and matrix classes, and a set of accompanying functions. Such a kernel makes IT++ library similar to <a href="/facts/Matlab/qPjLISCk">Matlab</a>/<a href="/facts/GNU_Octave/vVVq5evM">Octave</a>. For increased functionality, speed and accuracy, IT++ can make extensive use of existing <a href="/facts/FLOSS/1cHtjLCB">free and open source</a> libraries, especially <a href="/facts/Basic_Linear_Algebra_Subprograms/T8Jq1Jpq">BLAS</a>, <a href="/facts/LAPACK/sMGe0RhF">LAPACK</a> and <a href="/facts/FFTW/Q7STPyIk">FFTW</a> libraries. Instead of BLAS and LAPACK, some optimized platform-specific libraries can be used as well, i.e.: </p> <ul><li><a href="/facts/Automatically_Tuned_Linear_Algebra_Software/p9BorAJr">ATLAS</a> (Automatically Tuned Linear Algebra Software) - includes optimised BLAS, CBLAS and a limited set of LAPACK routines;</li> <li><a href="/facts/Math_Kernel_Library/nwPPAUpe">MKL</a> (Intel Math Kernel Library) - includes all required BLAS, CBLAS, LAPACK and FFT routines (FFTW not required);</li> <li><a href="/facts/AMD_Core_Math_Library/PYDKBF5V">ACML</a> (AMD Core Math Library) - includes BLAS, LAPACK and FFT routines (FFTW not required).</li></ul> <p>It is possible to compile and use IT++ without any of the above-listed libraries, but the functionality will be reduced. IT++ works on <a href="/facts/Linux/9FvCKSTq">Linux</a>, <a href="/facts/Solaris_(operating_system)/KPfT98EJ">Solaris</a>, <a href="/facts/Windows_(operating_system)/bwhAhuSL">Windows</a> (with <a href="/facts/Cygwin/0ANCmAgH">Cygwin</a>, MinGW/MSYS, or <a href="/facts/Microsoft_Visual_C%252B%252B/RM3sbYw5">Microsoft Visual C++</a>) and <a href="/facts/OS_X/Y93vVpTm">OS X</a> operating systems. </p>