Abstract

. Numeric arrays in Blitz++ rival the efficiency of Fortran, but without any extensions to the C++ language. Blitz++ has features unavailable in Fortran 90/95, such as arbitrary transpose operations, array renaming, tensor notation, partial reductions, multicomponent arrays and stencil operators. The library handles parsing and analysis of array expressions on its own using the expression templates technique, and performs optimizations (such as loop transformations) which have until now been the responsibility of compilers. 1 Introduction The goal of the Blitz++ library is to provide a solid "base environment" of arrays, matrices and vectors for scientific computing in C++. This paper focuses on arrays in Blitz++, which provide performance competitive with Fortran and superior functionality. The design of Blitz++ has been influenced by Fortran 90, High-Performance Fortran, the Math.h++ library [3], A++/P++ [4], and POOMA [5]. It incorporates various features from these environ...

Citations

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